Digitized by the Internet Archive in 2011 with funding from The Library of Congress http://www.archive.org/details/surfacewatersupp01illi Surface Water Supply of Illinois Central and Southern Portions 1908—1910 The Internal Improvement Commission of Illinois SPRINGFIELD, ILL. Illinois State Journal Co., State Printers 1911. MAY 29^9" / CONTENTS. Page. Introduction 5 Authority fot Investigations o Scope of Investigations 6 Purposes of the Work 6 Naviga tion 6 Domestic Water Supply 7 Water Power 7 Drainage of Swamp and Overflowed Lands .' Flood Prevention 8 Publications 8 Definition of Terms 8 Convenient Equivalents 9 Explanation of Tables 10 Field Afethods of Measuring Stream Flow 12 Velocity Method 12 Office Methods of Computing and Studying Discharge and Run-off 16 Accuracy and Reliability of Field Data and Comparative Results 19 Use of the Data 20 Cooperation and Acknowledgments 20 Division of Work 21 Big Muddy River 22 Description 22 Big Muddy River near Cambon, J II 23 Beaucoup Creek near Pinckney ville, 111 32 Embarras River 41 Description 41 Embarras River near Oakland, III 42 Embarras River at St. Marie, 111 4S Kaskaskia River • oo Descript ion 55 Kaskaskia River near Areola, III 56 Kaskaskia River at Shelby ville, 111 6o Kaskaskia River at Vandalia, 111 73 Kaskaskia River at Carlyle, 111 >2 Kaskaskia River at New Athens, 111 91 Shoal Creek near Breese, 111 IQ3 Silver Creek near Lebanon, III 109 Little Wabash River 119 Skillet Fork River near Wayne City, 111 119 Sangamon Rivei 128 Description 128 Sangamon R iver near Monticeilo, III 129 Sangamon River at Riverton, III 137 Sangamon River near Oakford, III 145 Salt Creek near Kcnney, III 152 South Foi k of Sangamon River near Taylorvillo, III 161 Cahokia Creek 171 Description 171 Cahokia Creek near Poag. Ill 1 71 Contents — Concluded . Page. Little Wabash River ]'^ 17o Description Little Wabash River near Clay Cit j-, lU -. J ' Little Wabash River near Golden Gate, 111 '^ Little Wabash River at Carmi, 111 J^ SkUlet Fork River near Mill Shoals, III J^ Appendix Climatological Data, Northern Illinois, Section-b4 ^^ Climatological Data, Central Illinois, Section-65 ^^ Climatological Data, Southern Illinois, Section-66 ^37 Summary of Climatological Data for 1909. List of Coopeiative Observers SURFACE WATER SUPPLY OF ILLINOIS, CEN- TRAL AND SOUTHERN PORTION, 1908-10. INTRODUCTION. Authority for Investigations: This volume contains the results of flow measurements on certain streams in the State of Illinois. The work was performed by the water- resources branch of the United States Geological Survey, M. 0. Leigliton,. hydrographer, in cooperation with the Internal Improvement Commis- sion of Illinois, Isham Eandolph, chairman. The Internal Improvement Commission paid for all the fleld work; the cost of the office computa- tions was borne by the Commission and the Survey. The Geological Survey also furnished all instruments and supervised and directed the work. The authority for this expenditure is contained in the organic law of the Internal Improvement Commission (Session Laws, Forty- fifth General Assembly, Adjourned Session, p. 33), which provides, among other things, as follows : "The duties of the Commission shall be to investigate * * * the re- clamation of lands subject to overflow or inundation, * ' * * and such other statistics and data as will enable the next General Assembly to properly formulate and devise ways and means whereby legislative enactment may be had to carry out and put into effect the benefits to be derived by the * * * reclamation of lands subject to inundation in Illinois." Inasmuch as the study of run-off is the first consideration in connec- tion with drainage projects and because the estal)lishment of the height and distance between levees which are designed to control the entire flood flow of a stream involves the determination of the volume of water that will come down the valley, these investigations are well within the authority of the law. The work has been supported since the fiscal year ending June 30, 1909, from funds provided in the Omnibus Appropriation Act of the Forty-sixth General Assembly passed June 3, 1909, and entitled: "An Act to provide for the ordinary and contingent expenses of the State Government until the expiration of the fiscal quarter after the adjournment of the next regular session of the General Assembly." Section 70 of this Act appropriates "to the Internal Improvement Commission * * * -^qp g^^'vey of rivers and study of water supply and all other necesvsarv expenses for the work of the Commission the sum of $30,000.00." Scope of Investigation: These investigations are not complete nor do they include all the river system or parts thereof that might purposefully be studied. The scope of the work is limited to that which can be provided with the appropria- tions available. The field covered and the character of the work are believed to be the best that could be accomplished under the controlling conditions. The investigations have been concentrated upon streams in the central and southern portion of the State where water supply, prevention of overflow and reclamation of swamp land make the strongest appeal for immediate study of the problems. It is essential that records of stream flow shall be maintained during a period of years sufficient to cover all stages, in order that within reason- able limits the entire range of flow from the absolute maximum to the absolute minimum may be determined. The length of such a period manifestly varies for different streams and cannot be absolutely deter- mined. Experience has shown that the records should cover from five to ten years, or for some streams twenty years or more, the limit being determined by the relative importance of the stream and the inter- dependence of the results and other long-time records on adjacent streams. The records herein set forth cover a period of over two years and indicate a fairly completed range of flow from maximum to minimum. The gauging stations are being maintained under the present appropria- tion and the records will be kept as long as the General Assembly sees fit to appropriate funds for the purpose. In all engineering work there is a point of refinement beyond which it is needless and wasteful to proceed, and this principle applies with especial force to stream-flow measurements. It is confidently believed that with some unavoidable exceptions the stream-flow data presented in this publication are sufficiently accurate for all practical purposes. It must be borne in mind, however, that these records extend over a comparatively short period of time and all ])ersons are cautioned to use the greatest care in the utilization of sncli in('oni])lete records. ]*urj)()s('H of the "lVo7'/i'; Among the purposes for which the results contained in this volume are requisite are navigation, domestic water supply, water power, swamp and overflow land drainage, and flood prevention. The demands of all these interests are iniincdiate. Navigation : At the general election of Xov. 3, 1008, the Constitution was amended by popular vote, and the General Assembly was authorized to issue twenty million dollars in bonds for the construction of a waterway from Joliet, 111., to IJtica, 111. The further extension of this waterway to the Gulf is under consideration by Congress and there is already an eight-foot navigation below Utica. With the completion of tlie Lockport-Utica link in this waterway there will be opened up through the heart of the State and along its western border 550 miles of navigable trunk line waterwa3^ There are also about 125 miles of navigable waterway on the Ohio river along the southern boundary, and the Wabash is navigable along the eastern border. When the State and federal governments become committed to a definite policy of inland waterway improvements the development of the tributaries to these trunk waterways become of paramount importance. It is obvious that the determination of stream- flow is necessary to the intelligent solution of the many problems involved. Domestic ^yater Supphj : The highest use of water is that of domestic supply, and while the State interest in this aspect of the matter is less direct than in the aspects already named, this use of water nevertheless has so broad a significance with respect to the general welfare that the State govern- ment is ultimately and intimately concerned. ^yatc'r Power: The time is rapidly approaching when the development of the water power of the country will be an economic necessity. Our stock of coal is being rapidly depleted and the cost of steam power is increasing accordingly. Industry will cease its growth if cheap power is not available. Water power is the only avenue now open. When the electric transmission of power was accomplished the relation of our water powers to economic conditions changed entirely. Previous to the day of electric transmission the importance of a water power was largely confined to the locality at which it was generated, but it has now become a public utility in which the individual citizen is vitally interested. There is a great paucity of accurate observation as to the amount of water power available within the State, and inasmuch as the amount of water power that may be made available is dependent on the flow of rivers, the investigation of flow becomes a prerequisite in the judicial management of this source of energy. There are practically no water power sites on any of the streams that have been studied up to the date of this report, and studies and investi- gations should be extended to cover those streams upon which tliere are opportunities for the development of water power. Drainage of Swamp and Overfloiued Lands: There are approximately 3,000 square miles of land subject to overflow along our intra-state streams. Probably 90 per cent of the bottom lands of the State are unprotected or inadequately protected against floods and it is estimated that if they could all be brought under successful cultiva- 8 tion there would be added to the farm value of the State over one hundred million dollars. There would also be additional benefits to be derived from improved health conditions. The study of run-oS is the first consideration in connection with drainage projects. If, by the drainage of a large area into any particular channel, that channel becomes so gorged wdth water which it had not hitherto been called upon to convey, that overflow conditions are created in places where previously the land was not subject to inundation, then drainage results merely in an exchange of land values. This is not the purpose of drainage improvement. By making use of the data in this report such a contingency as mentioned above would be avoided. Flood Prevention : The damage from floods to property and crops in the Illinois bottoms is enormous. Xo careful estimate of the monetary loss has been made, owing to the absence of comprehensive data, but these losses are not merely local in effect. They constitute an annual tax on the property in large areas of the State which should be reduced in the orderly prog- ress of government. It goes without saying that any consideration of flood prevention must be based on a thorough knowledge of stream-fiow, both in the contribut- ing areas which furnish the water and along the lowland rivers. Publications: The data on stream-flow collected by the Illinois cooperation appears here in print for the first time, and the records of most of the stations discussed in this report extend over a period of more than two years. The order of treatment of stations in each basin in these papers is downstream. Tlie main stream of any river is determined on the basis ■of drainage area. After all stations from the source to the mouth of the main stem of the river have been given, the tributaries are taken up in regular order from source to mouth. The tributaries are treated the same as the main stream, all stations in each tributary basin being given before taking up the next one below. The studies and investigations of stream flow in the State of Illinois will be continued until the appropriation for the current fiscal quarter is exhausted. Their further continuance and publication being dependent upon further appropriation and authority. Definiiion of Terms: ''Hie volume of water flowing in a stream — the "run-of¥" or "dis- charge" — is expressed in various terms, each of which has become associated with a certain class of work. These terms may be divided into two groups: (1) Those which represent a rate of flow, as second- feet, gallons per minute, miner's inches, and run-off in second-feet per 9 square mile, and {2} those whieli re])i'c'r«(_'iit ilie actual quantity of water, as run-otl: in depth in inches and acre-feet. They may be defined as follows : "Second-foot" is an abbreviation for cubic foot per second and is the rate of discharge of water flowing in a stream 1 foot v/ide, 1 foot deep, at a rate of 1 foot per second. It is generally used as a fundamental unit from which others are computed by the use of the factors given in the following table of equivalents. "Gallons per minute" is generally used in connection with pumping and city water supply. The "miner's inch" is the rate of discharge of water that passes through an orifice 1 inch square under a head which varies locally. It is commonly used by miners and irrigators throughout the West and is defined by statute in each state in which it is used. "Second-feet per square mile" is the average number of cubic feet of water flowing per second from each square mile of area drained, on the assump- tion that the run-off is distributed uniformly both as regards time and area. "Run-off in inches" is the depth to which the drainage area would be covered if all the v/ater flowing from it in a given period were conserved and uniformly distributed on the surface. It is used for comparing run-off with rainfall, which is usually expressed in depth in inches. "Acre-foot" is equivalent to 43,560 cubic feet, and is the quantity required to cover an acre to the depth of 1 foot. It is commonly used in connection with storage for irrigation work. Convenient Equivalents: The following is a list of convenient equivalents for use in hydraulic <2omi3utations : 1 second-foot equals 40 California miner's inches (law of March 23, 1901). 1 second-foot equals 38.4 Colorado miner's inches. 1 second-foot equals 40 Arizona miner's inches. 1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per minute; equals 646,272 gallons for one day. 1 second-foot equals 6.23 British imperial gallons per second. 1 second-foot for one year covers 1 square mile 1.131 feet or 13,572 inches deep. 1 second-foot for one year equals 31,536,000 cubic feet. 1 second-foot equals about 1 acre-inch per hour. 1 second-foot for one day covers 1 square mile 0.03719 inch deep. 1 second-foot for one 28-day month covers 1 square mile 1.041 inches deep. 1 second-foot for one 29-day month covers 1 square mile 1.079 inches deep. 1 second-foot for one 30-day month covers 1 square mile 1.116 inches deep. 1 second-foot for one 31-day month covers 1 square mile 1.153 inches deep. 1 second-foot for one day equals 1.983 acre-feet. 1 second-foot for one 28-day month equals 55.54 acre-feet. 1 second-foot for one 29-day month equals 57.52 acre-feet, 1 second-foot for one 30-day month equals 59.50 acre-feet. 1 second-foot for one 31-day month equals 61.49 acre-feet. 100 California miner's inches equal 18.7 United States gallons per second. 100 California miner's inches equal 96.0 Colorado miner's inches. 100 California miner's inches for one day equal 4.96 acre-feet. 100 Colorado miner's inches equals 2.60 second-feet. 100 Colorado miner's inches equals 19.5 United States gallons per second. 100 Colorado miner's inches equal 104 California miner's inches. 100 Colorado miner's inches for one day equal 5.17 acre-feet. 100 United States gallons per minute equal 0.223 second-foot. 100 United States gallons per minute for one day equal 0.442 acre-foot. 10 1,000,000 United States gallons per day equal 1.55 second-feet. 1,000,000 United States gallons equal 3.07 acre-feet 1,000,000 cubic feet equal 22.95 acre-feet. 1 acre-foot equals 325,850 gallons. 1 inch deep on 1 square mile equals 2,323,200 cubic feet. 1 inch deep on 1 square mile equals 0.0737 second-foot per year. 1 foot equals 0.3048 meter. 1 mile equals 1.60935 kilometers. 1 mile equals 5,280 feet. 1 acre equals 0.4047 hectare. 1 acre equals 43,560 square feet. 1 acre equals 209 feet square, nearly. 1 square mile equals 2.59 square kilometers. 1 cubic foot equals 0.0283 cubic meter. 1 cubic foot equals 7.48 gallons. 1 cubic foot of water weighs 62.5 pounds. 1 cubic meter per minute equals 0.5886 second-foot. 1 horse power equals 550 foot-pounds per second. 1 horse power equals 76.0 kilogram-meters per second. 1 horse power equals 746 watts. 1 horse power equals 1 second-foot falling 8.80 feet. IVs horse power equal about 1 kilowatt. Sec.-ft. X fall in feet To calculate water power quickly — equals net horse power on water wheel realizing 80 per cent of theoretical power. ExplancUion of Tables: For each drainage basin there is gi\en a brief description of general conditions covering such features as area, source, tributaries, topography, geology, conditions of forestation, rainfall, ice conditions, storage, power possilnlities, and other special features of importance or interest, includ- ing the climatological data printed in the appendix. For each regular current-meter gaging station are given m general, and so far as available, the following data: Description of station, list of discliarge measurements, table ot daily o-ao-c heights, dailv discharge, discharge table and monthly estimates for each of Ihe following stations from date of establishment to June 30, 1910: 1. Big Muddy River at Cambon, Illinois. 2. Beaucoup Creek near Pinckneyville. Embarras River near Oakland. 4. Emljarras River at St. Marie. 5. Kaskaskia River near Areola. 6. Kaska.skia River at Shelbyville. 7. Kaskaskia River at Vandalia. 8. Kaskaskia River at Carlyle. 9. Kaskaskia River at New Athens. 10. Shoal Creek near Breese. 11. Silver Creek near Lebanon. 12. Skillet Fork River near Wayne City. 13. Sangamon River near Monticello. 14. Sangamon River at Riverton. 15. Sangamon River near Oakford, 16. Salt Creek near Kenney. 17. South Fork of Sangamon, Fork of Sangamon River near Taylorville. 11 Also description, discliar*>-e iiKnisiirements and daily ,iia«i;(' hci^izlits lor each of the following stations: 1. Cahokia Creek near Poag, Illinois. 2. Little Wabash River near Clay City. 3. Little Wabash River near Golden Gate. 4. Little Wabash River near Carmi. 5. Skillet Fork River near Mill Shoals. Xo discharge table was made for any of these latter stations for reasons given in tlie description of the tables. In addition to statements regarding the location and instaUation of cnrrent-meter stations, the descriptions give information in regard to any conditions which may affect the constancy of the relation of gage lieight to discharge, covering such points as ice, shifting conditions of How, and backwater; also, full information regarding diversions which decrease the total flow at the measuring section. Statements are also made regarding the accuracy and reliability of the data. The discharge-measurement table gives the results of the discharge measurements made during the year, including the date, name of hydro- grapher, width and area of cross section, gage height and discharge in second-feet. The table of dail}- gage heights gives the daily fluctuations of the surface of the river as found from the gage readings taken each day. At most stations the gage is read once per day, either in the morning or in the evening. The gage height given in the table represents the elevation of the surface of the water above the zero of the gage. All gage heights during ice conditions, backwater from obstructions, etc., are published as recorded, with suitable foot notes. The rating is not applicable for such periods unless the proper correction to the gage heights is known and applied. Attention is called to the fact that the zero of the gage is placed at an arbitrary datum and has no relation to zero flow or the bottom of the river. In general, the zero is located some- what ])elow the lowest known flow, so that negative readings shall not occur. The discharge measurements and gage heights are the base data from which the rating tables and monthly discharge taldes are computed. The rating table gives either directly or by interpolation the discharge in second-feet, corresponding to every stage of the river recorded during the period for which it is applicable. In the table of monthly discharge the column headed ''^raximum'' gives the mean flow, as determined from the rating tal)le, for the day M'hen the mean gage height was highest. As the gage height is the mean for the day, it does not indicate correctly the period when the water sur- face was at crest height and the corresponding discharge consequently larger than given in this column. Likewise, in the column of "^linimum" the quantity given is the mean flow for the day when the mean gage height was lowest. The column headed "Mean'^ is the average flow in cubic feet for each second during the month. On this the conijnitations for the remaining columns, whicli are defined on page T, are based. In tlie t^^bles of climatological data ^appendix) are given, for each of the stations in the three sections of Illinois, designated as sections 64, 65 and G6 of the Climatological Division of the Weather Bureau of the 12 Department of Agriculture; the precipitation, monthly, annual and average amounts (in inches and hundreds) ; the average number of days with .01 inch or more of precipitation; the average snowfall; the mean temperature ; the lowest temperature ; prevailing wind direction ; highest temperature ; mean relative humidity ; average hourly wind movement (in miles) ; frost data, monthly and annual mean precipitation for the year 1909, with departures from the normal; monthly and annual mean temperature for the year 1909, with departures from the normal; monthly maximum temperatures for the year 1909, with dates ; monthly minimum temperature for the year 1909, with dates, and a list of the cooperative observers for each station in the three sections. Field Methods of Measuring Stream Floic : There are three distinct methods of determining the flow of open- channel streams: (1) by measurements of slope and cross section and the use of Chezy's and Kutter's formulas; (2) by means of a weir or dam; (3) by measurements of the velocity of the current and of the area of the cross section. The method chosen depends on the local physical conditions, the degree of accuracy desired, the funds available and the length of time that the record is to be continued. The velocity method has been used exclusively in these determinations and a de- scription of this method is therefore considered sufficient. Velocity Method: Streams in general present throughout their courses to a greater or less extent all conditions of permanent, semi-permanent and varying conditions of flow. In accordance with the location of the measuring section with respect to these physical conditions, current-meter gaging stations may in general be divided into four classes: (1) those with per- manent conditions of flow; (2) those with beds which change only during extreme high water; (3) those with beds Avhich change frequently, but which do not cause a variation of more than about 5 per cent of the discharge curves from year to year, and (4) those with constantly sliift- ing beds. In determining tlie daily flow, different office methods are necessary for each class. Tlic fleld data on which the determinations arc based and the metliods of collecting them are, however, in general the same. Great care is taken in the selection and equipment of gaging stations for (Ictormining discharge by velocity measurements, in order that the data may liave tlie required degree of accuracy. They are located as far as possible, at sucli ])oints tliat the relation between gage height and discharge will always remain constant for any given stage. The ex- perienc(^ of engineers of the geological survey has been that permanency of conditions of flow is the prime requisite of any current-meter gaging station when maintained for several years, unless funds are available to cover all changes in conditions of flow. A straight, smooth section, without cross cnrrents, backwater, boils, etc., at any stage, is highly de- sirable; but on most streams it is not attainable, except at the cost of 13 a cable Gquipment. Eoiigh perinanont sections, if measiireineiit.- are properly made by experienced engineers, taking measuring points at a distance apart of 2 to 5 jDcr cent, or less, of a total width, will, within reasonable limits, yield better results for a given outlay of money than semi-permanent or shifting sections with smooth, uniform current. So far as possible, stations are located where the banks are high and not subject to overflow at high stages, and out of the influence of tributary streams, dams, or other artificial obstructions which might affect the relation between gage height and discharge. A gaging station consists essentially of a gage for determining the daily fluctuations of stage of the river and some structure or apparatus from which discharge measurements are made, usually a bridge or cable. The two factors required to determine the discharge of a stream past a section perpendicular to the mean direction of the current are the area of the cross section and the mean velocity of flow normal to that section. In making a measurement with a current meter a number of points, called measuring points, are measured off above and in the plane of the measuring section at which observations of depth and velocity are taken. These points are spaced equally for those parts of the section where the flow is uniform and smooth and are spaced unequally for other parts, according to the discretion and judgment of the engineer. In general, the points should not be spaced farther apart than 5 per cent of the distance between piers, nor farther apart than the approximate mean depth of the section at the time of measurement. The measuring points divide the total cross section into elementary strips, at each end of which observations of depth and velocity are made. The discharge of any elementary strip is the product of the average of the depths at the two ends times the width of the strip times the average of the mean velocities at the two ends of the strip. The sum of the dis- charges of the elementary strips is the total discharge of the stream. (For a discussion of methods of computing the discharge of a stream, see Engineering Xews, June 25, 1908.) Depths for the determination of the area are usually obtained by sounding with the current meter and cable. In rough sections or swift current, an ordinary weight and cable are used, particular care being taken that all observations shall be in the plane of the cross section. Two methods of determining the velocity of flow of a stream are in general use — the float method and the current-meter method. The float method, with its various modifications of surface, sub- surface and tube or rod floats, is now considered obsolete in the ordinary practice of the United States Geological Survey. The use of this method is limited to special conditions where it is impracticable to use the cur- rent meter, such as in places where large quantities of ice or debris which may damage the meter are flowing with the current, and for miscellane- ous measurements or other work where a high degree of accuracy is not necessary. Tube floats are very satisfactory for use in canals with regular bottoms and even flow of current. Measurements by the float method are made as follows : The velocitv of flow of the stream is 14 obtained by observing the time which it takes floats set free at different points across the stream to pass between two range lines about 200 feet apart. Tlie area nsed is the mean vahie obtained from several cross sec- tions measured between tlie two range lines. The chief disadvantages of this method are difficulty in obtaining the correct value of mean area for the course used and uncertainty regarding the proper coefficient to apply to the observed velocity. The Price current meter is now used almost to the exclusion of other types of meters by the United States Geological Survey in the determin- ation of the velocity of flow of water in open channels, a use for which it is adapted under practically all conditions. Briefly, the meter con- sists of six cups attached to a vertical shaft which revolves on a conical hardened steel point when immersed in moving water. The revolu- tions are indicated electrically. The rating, or relation between the velocity of the moving water and the revolutions of the wheel, is de- termined for each meter by drawing it through still water for a given distance at different speeds and noting the ]unnl)er of revolutions lor each run. From these data a rating table is prepared wliicli gives the velocity per second of moving water for any number of revolutions in a given time interval. The ratio of revolutions per second to velocity of flow in feet per second is very nearly a constant for all s])eeds and is approxi- mately 0.45. Three classes of methods of measuring velocity with current meters are in general use — multiple-point, single-point, and integration. The two ])rinci})al multiple-point methods in general use are the vertical curve and 0.2 and 0.8 depth. In the vertical velocity curve method a series of velocity determiiia- tions are made in each vertical at regular intervals, usually about 10 to 20 per cent of the depth apart. By plotting these velocities as ab- scissas and their depths as ordinates and drawing a smooth curve among the resulting points, the vertical velocity curve is developed. This curve shows grai)hically the magnitude and changes in velocity from the sur- face to the bottom of the stream. The mean velocity in the vertical is then obtained by dividing the area bounded by this velocity curve and its axis by the depth. This method of obtaining the mean velocity in the vertical is ])r()l)al)ly the best known, but on account of the length of time ref|uire(l to make a complete measurenuMit, its use is largely limited to the determination of coe(Tici(Mits for ])uri)oses of com])arison and to measurcnu'iits under ice. In the second mult iplc-poinl method the meter is hehl successively at ()/! and o.S (Icpjh, nnd the menu of the velocities at these two points is taken as the mean Nclocily I'oi- lh;it vei'tic;il. On the nssuini)tion that the vei'tical velocity cur\(' is ;i common pnrahola with hoi'izontal axis, the mean of the velocities at (1.22 and 0.75) de|)th will give (closely) the mean velocity in the vertical. >\ctual observations under a wide range of conditions show thiit this multii)le-i)oint method gives the mean velocity very closely for open-w;ite!- conditions nnd that in a completed measui-ement it seldom \aries as much as 1 |ter cent from the \alue 15 given by the vertical velocity curve method. ^loreover, the indications are that it holds nearly as 'well for ice-covered rivers. It is very ex- tensively used in the regular practice of tlie Ignited States Geological Survey. The single-point method consists in holding the meter either at the depth of the thread of mean velocity, or at an arbitrary dei)tii for which the coefficient for reducing to mean velocity has been determined or must be assumed. Extensive experiments by means of vertical velocity curves show that tlie thread of mean velocity generally occurs between 0.5 and 0.7 total depth. In general practice the thread of mean velocity is considered to be at 0.() depth, and at this point the meter is held in most of the measurements made by the single-point method. A large number of vertical velocity curve measurements, taken on many streams and under varying conditions, show that the average coefficient for reducing the velocity obtained at O.G depth to mean velocity is ])ractically unity. The variation of the coefficient from unity in individual cases is, however, greater than in the 0.2 and 0.8 method, and the general results are not as satisfactory. In the other principal single-point method the meter is held near the surface, usually 1 foot below, or low enough to be out of the effect of the wind or other disturbing influences. This is known as the sub-surface method. The coefficient for reducing the velocity taken at the sub- surface to the mean has been found to be in general from al)out 0.85 to 0.95, depending on the stage, velocity and channel conditions. The higher the stage the larger the coefficient. The method is especially adapted for flood measurements, or when the velocit}' is so great that tlie meter can not be kept in the correct position for the other methods. The vertical integration method consists in moving the meter at a slow, uniform speed from the surface to the l)ottom and back again to the surface and noting the number of revolutions and the time taken in the operation. This method has the advantages that the velocity at each point of the vertical is measured twice. It is useful as a check on the ])o\ui methods. In using the Price meter great care should be taken that the vertical movement of the meter is not rapid enough to vitiate the accuracy of the resulting velocity. The determination of the flow of an ice-covered stream is difficult, owing to diversity and instability of conditions during the winter period, and also to lack of definite information in regard to the laws of flow of water under ice. The method now employed is to make frequent dis- charge measurements during the frozen periods by the 0.2 and 0.8 and the vertical velocity curve methods, and to keep an accurate record of the conditions, such as the gage height to the surface of the water as it rises in a hole cut in the ice, and the thickness and character of the ice. From these data an approximate estimate of the daily flow can be made by constructing a rating curve (really a series of curves) similar to that used for open channels, 1)ut considering, in addition to gage heights and discharo-e. the varvina" thickness of ice. 16 Office Methods of Computing and Studying Discharge and Run-Off: At the end of each year the field or base data for current-meter gaging stations, consisting of daily gage heights, discharge measurements, and full notes, are assembled. The measurements are plotted on cross- section paper and rating curves are drawn wherever feasible. The rating tables prepared from these curves are then applied to the tables of daily gage heights to obtain the daily discharge and from these appli- cations the tables of monthly discharge and run-off are computed.. Kating curves are drawn and studied with special reference to the class of channel conditions which they represent. The discharge meas- urements for all classes of stations wdien plotted with gage heights in feet as ordinates and discharges in second-feet as abscissas define rating curves which are more or less generally parabolic in form. In many cases curves of area in square feet and mean velocity in feet per second are also constructed to the same scale of ordinates as the discharge curve. These are used mainly to extend the discharge curves beyond the limits of the plotted discharge measurements, and for checking purposes to avoid errors in the form of the discharge curve and to determine and eliminate erroneous measurements. For every published rating table the following assumptions are made for the period of application of the table: (a) That the discharge is a function of and increases gradually with the stage; (b) that the discharge is the same whenever the stream is at a given stage, and hence such changes in conditions of flow as may have occurred during the period of application are either compensating or negligible, except that the rating as stated in the footnote of each table is not applicable for known conditions of ice, log jams, or other similar obstructions; (c) that the increased and decreased discharge due to change of slope on rising and falling stages is either negligible or compensating. As already stated, the gaging stations may be divided into several classes, as indicated in the following paragraphs: The stations of Class 1 represent the most favorable conditions for an accurate rating and are also the most economical to maintiiin. The bed of the stream is usually composed of rock and is not subject to the de])osit of sediment and loose material. This class includes also many stations located in a pool below which is a permanent rocky riftle that controls the flow like a weir. Provided the control is sufficiently high and close to the gage to prevent cut and fill at the gaging point from materially affecting the slope of the water surface, the gage height will for all practical purposes be a true index of the discharge. Discharge measurements made at such stations usually ])lot within 2 or :> per cent of tlie mean-discharge curve and the rating develo]KMl from ihat curve represents a very high degree of accuracy. Class 2 is confined mainly to stations on rough mountainous str ams with steep slopes. The beds of such streams are, as a rule, comparati -ely permanent during low and medium stages, and when the flow is s iffi- ciently well defined by an adequate number of discharge measurements before and after each flood the stations of this class give nearly as good 17 results as those of Class 1. As it is seldom possible to make measure- ments covering the time of change at flood stage, the assumption is often made that the curves before and after the flood converged to a common point at the highest gage heiglit recorded during the flood. Hence the only uncertain period occurs during the few days of highest gage heights covering the period of actual change in conditions of How. Class 3 includes most of the current-meter gaging stations maintained by the United States Geological Survey. If sufficient measurements could be made at stations of this class, results Avould be obtained nearly equaling those of Class 1, but owing to the limited funds at the disposal of the Survey this is manifestly impossible, nor is it necessary for the uses to which discharge data are applied. The critical points are, as a rule, at relatively high or low stages. The percentage error, however, is greater at low stages. Xo absolute rule can be laid down for stations of this class. Each rating curve must be constructed mainly on the basis of the measurements of the current year, tlie engineer being guided largely by the past history of the station and the following general law : If all measurements ever made at a station of this class are plotted on cross-section paper, they will define a mean curve which may be called a standard curve. It has been found in practice that if, after a change caused by high stage, a relatively constant condition of flow occurs at medium and low stages, all measurements made after the change will plot on a smooth curve which is practically parallel to the standard curve with respect to their ordinates, or gage heights. This law of the parallelism of ratings is the fundamental basis of all ratings and esti- mates at stations with semi-permanent and shifting channels. It is not absolutely correct, but, Tvith few exceptions, answers all the practical requirements of estimates made at low and medium stages after a change at a high stage. This law appears to hold equally true whether the change occurs at the measuring section or at some controlling point below. The change is, of course, fundamentally due to change in the channel caused by cut, or fill, or both, at and near the measuring section. For all except small streams the changes in section usually occur at the bottom. The following simple, but typical, examples illustrate this law : (a) If 0.5 foot of planking were to be nailed on the bottom of a well-rated wooden flume of rectangular section there would result, other conditions of flow being equal, new curves of discharge, area, and velocity, each plotting 0,5 foot above the original curves when referred to the original gage. In other words, this condition would be analogous to a unifonn fill or cut in a river channel which either reduces or increases all three values of discharge, area, and velocity for any gage height. In practice, however, such ideal conditions rarely exist. (b) In the case of a cut or fill at the measuring section there is a marked tendency toAvard decrease or increase, respectively, of the velocity. In other words, the velocity has a compensating effect, and if the com- pensation is exact at all stages the discharge at a given stage will be the same under both the new and the old conditions. 2 S W 18 (c) In the case of uniform change along the crest of a weir or roclcy controlling point, the area curve will remain the same as before the change, and it can be shown that here again the change in velocity carve is such that it will produce a new discharge curve essentially parallel to the original discharge curve with respect to their ordinates. Of course in actual practice such simple changes of section do not occur. The changes are complicated and lack uniformity, a cut at one place being largely offset by a fill at another and vice versa. If these changes are very radical and involve large percentages of the total area — as, for example, on small streams — there may result a wide departure from the law^ of parallelism of ratings. In complicated changes of section the corresponding changes in velocity which tend to produce a new^ parallel discharge curve may interfere with each other materially, causing eddies, boils, backwater, and radical changes in slope. In such extreme conditions, however, the measuring section would more properly fall under Class 4 and would require very frequent measurements of discharge. Special stress is laid on the fact that in the lack of other data to the contrary the utilization of this law will yield the most probable results. Slight changes at low or medium stages of an oscillating character are usually averaged by a mean curve drawn among them parallel to the standard curve, and if the individual measurements do not vary more than 5 per cent from the rating curve the results are considered good for stations of this class. Class 4 comprises stations that have soft, muddy, or sandy beds. Good results can be obtained from such sections only by frequent discharge measurements, the frequency varying from a measurement every two or three weeks to a measurement every day, according to the rate of diurnal change in conditions of flow. These measurements are plotted and a mean or standard curve drawn among them. It is assumed that there is a different curve for every day of the year and that this rating is parallel to the standard curve with respect to their ordinates. On the day of measurement the rating curve for that day passes through that measurement. For days between successive measurements it is assumed that the rate of change is uniform, and hence the ratings for the intervening days are equally spaced between the ratings passing through the two measurements. This method must be modified or aban- doned altogether under special conditions. Personal judgment and a knowledge of the conditions involved can alone dictate the course to pursue in such cases. The computations have, as a rule, been carried to three significant figures. Computation machines, Crelle's tables, and the 20-inch slide rule have been generally used. All computations are carefully checked. After the computations have been completed they are entered in tables and carefully studied and intercompared to eliminate or account for all gross errors, so far as possible. ^lissing periods are filled in, so far as is feasible, by means of comparison with adjacent streams. The attempt 19 is .made to coiuplete years or periods of discliarge, thus eiimiiiaiiiig fragmentary and disjointed reeords. Full notes aeeompanying such estimates follow the monthly discharge tables. For most of the stations estimates have been made of the monthly discharge during frozen periods. These are based on measurements under ice conditions wherever available, daily records of temperature and precipitation obtained from the United States Weather Bureau climate and crop reports, observers' notes of conditions, and a care- ful and thorough intercomparison of results with adjacent streams. Although every care possible is used in making these estimates they are often very rough, the data for some of them being so poor that the estimates are liable to as much as 25 to 50 per cent error. It is believed, however, that estimates of this character are better than none at all, and serve the purpose of indicating in a relative way the propor- tionate amount of flow during the frozen period. These estimates are, as a rule, included in the annual discharge. The large error of the individual months has a relatively small effect on the annual total, and it is for many purposes desirable to have the yearly discharge computed even though some error is involved in doing so. Accuracy and Reliability of Field Data and Comparative Results: Practically all discharge measurements made under fair conditions are well within 5 per cent of the true discharge at the time of observa- tion. Inasmuch as the errors of meter measurements are largely com- pensating, the mean rating curve, when well defined, is much more accurate than the individual measurements. Numerous tests and expe- riments have been made to test the accuracy of current-meter work. These show that it compares very favorably with the results from standard weirs, and, owing to simplicity of methods, usually gives results that are much more reliable than those from stations at dams, where uncertainty regarding the coefficient and complicated conditions of flow prevail. The work, of course, is dependent on the reliability of the observers. With relatively few exceptions, the observers perform their work hon- estly. Care is taken, however, to watch them closely and to inquire into any discrepancies. It is, of course, obvious that one gage reading a day does not always give the mean height for that day. As an almost invariable rule, however, errors from this source are compensating and virtually negligible in a period of one month, although a single day's reading may, when taken by itself, be considerably in error. In order to give engineers and others information regarding the probable accuracy of the computed results, footnotes are added to the tables of daily discharge and an accuracy column is inserted in the monthly discharge table. In the rating tables, "well deflned" indicates in general that the rating is probably accurate within 5 per cent ; "fairly well defined" within 10 per cent; "poorly defined" or "approximate," within 15 to 25 per cent. These notes are very general and are based on the plotting of the individual measurements with reference to the mean rating curve. 20 The accuracy column in the monthly-discharge table does not apply to the maximum or minimum nor to any individual day, but to the monthly mean. It is based on the accuracy of the rating, the probable reliability of the observer, and knowledge of local conditions. In this column, A indicates that the mean monthly flow is probably accurate within per cent; B, within 10 per cent; C, within 15 per cent; D, within-2o per cent. Special conditions are covered by footnotes. Use of the Data: It is the policy of the Internal Improvement Commission to make- available for the public the base data wdiich have been collected in the field by the Survey engineers, and these data will also be published in the Water Supply papers of the United States Geological Survey from time to time. This is done for the purpose of giving to any engineer the opportunity of examining the computed results and of changing and adjusting them as may seem best to him. Although it is believed that the rating tables and computed monthly discharges are as good as the base data up to and including the current year will warrant, it should always be borne in mind that the additional data collected at each station from year to year nearly always throw new light on data already collected and published, and hence allow more or less improve- ment in the computed results of earlier years. It is, therefore, expected that the engineer who makes serious use of the data given in these papers will verify all ratings and make such adjustments in earlier years as may seem necessary. The values in the table of monthly discharge are so arranged as to give only a general idea of the conditions of flow at the station, and it is not expected that they will be used for other than preliminary esti- mates. This is particularly true of the maximum and minimum figure, which, in the very nature of the method of collecting these data, are liable to large errors. The maximum value should be increased consider- ably for many stations in considering designs for spillways, and the minimum value should be considered for a group of, say, seven days and not for one day. The rating table, provided the engineer accepts it, is published pri- marily to allow him to apply it directly to the daily gage heights and rearrange the daily discharges in order of magnitude or by some other mctliod. ''I'lie ])recipitation and temperature tal)les in the appendix of (■lii!i;ilol()gi';il (lata are self ex])lanat()ry. ('(jf'/prriil I'jii (uul Acl'iioii'lcjhjuicnts : As lias been before stated, the data in this report were collected by tho Water Resoui'ces Branch of the United States Geological Survey. The Intcriuil ImprovcnuMit Conmiission ])ai(l the ex])ens<^>s of collecting the field data and of ])rey)aring the same for the final studies and com- putations necessary before the data were ready for ]niblication. " Under this ])lan of cooperal ion the ("oinniission was able to avail itself of the 21 organization and equipment of the Survey and the results of the investi- gations made available to both the State and federal governments. The climatological data are published with the permission of Willis L. Moore, Chief of the Weather Bureau of the United States Department of Agriculture. Division of Work: The field data were collected under the direction of A. H. Horton, District Engineer, by K. J. Taylor, William :\r. O'Xeill, H. J. Jackson and C. T. Baile}^, Junior Engineers. The ratings and studies of the data, so far as completed, were made by A. H. Horton, H. J. Jackson and F. F. Hensliaw. The computations and the preparations of the completed data for publication were made under the direction of F. F. Henshaw, Assistant Engineer, and G. C. Stevens, Junior engineer. '^ The climatological data were collected by the Climatological Division hi the AVeather Bureau of the United States Department of Agriculture, Willis L. Moore, Chief of the Bureau, and William G. Burns, Director of the Illinois Section. The report was edited and published under the direction of Robert Isham Randolph, Secretary of the Internal Improve- ment Commission. or aifii IfiunaB nBeirr oiIT s::; ' : biim om ?aoitrbiio) ■ I hnfi Mgil ri iif-:'iv/oa> 9flt oj ^a'rffo .imi .j.'MUitifjativiii fle^yd Joa o/jjii ^sitrlrdfaaoq 9i^/;'rod8 . fff'tM-rriM •^7i^^.M•^ r.'rftw'' •'■''■' (frulM-^^ ^.':M /^/beJ o1 rqqrsaraaiM 9f{l moi't JfiftBD b 2,cii^ >r'i^^-tioo lo vtilidi?80';[ u -. sierfT 9ao vino ifidj .td^uodt ar II .vbboK s.iS 9dt -oMolfi sil isdi abfoii Iboo edt VT9V od YldBd(>T:(| bif/ow noiiDnTisnoo ffinB') .iloa ,^"«>7 ri'-iti,'r;.)7j od of [nrToiRrrr -idt bfir. v/-o! -r /linfK 22 BIG MUDDY KIYER. Description. The drainage basin of the Big Muddy river lies in southern Illinois. The river rises in the northwestern part of Jefferson county, flows south to the town of Zeigler, in Franklin county, thence it flows westward to Murphysboro, in Jackson county, from there it flows south and empties into the Mississippi river about forty miles above Cairo, 111. Below Zeigler the river is extremely crooked. The length of the river is about 100 miles, not including bends. The important tributaries are Beaucoup creek. Little Muddy river, Caseys creek and Middle Fork creek ; all these tributaries are small and of not much importance. The total drainage area is 2,320 square miles. The drainage basin is elliptical in shape with a major axis about seventy miles long and a minor axis about fifty miles long. The country is level or undulating; the soil is known as ^'.mulatto soil," a 3'ellowish- brown clay. Winter wheat is the staple crop. The southeastern part is underlaid with valuable coal veins and coal mining is carried on quite extensively. The slope of the river is small; its sources are about 710 feet, and its mouth is about 310 feet above sea level. The banks and bed of the stream are soft and insecure. Til ere are no forested areas in this basin except occasional groves and tlie growth along the banks of the stream. Tlie mean annual rainfall is about forty-two inches. The winter conditions are mild; ice does not form very thick, and, as a rule, the snowfall is light and does not last long. Storage possibilities have not been investigated, but, owing to the growing demand for water in tliis section, they should receive careful attention. There are no opportunities for power development in this basin. The stream is similar to the other rivers in central and southern Illinois in that it is subject to high floods and very low water. In some localities llic high water overflows the land on each bank for two or three miles; some sections resemble a lake during floods. At Murphysboro, said to be sixty miles from the ]\Iississip])i following the river, there is frequently backwater, and floods reach the height of thirty feet above low water. Then^ is a possibility of constructing a canal from the Mississippi to the coal fields that lie along the Big Muddy. It is thought that only one lock would b(^ necessary. Canal construction would probably be very simple, as th(» country is low and the material to be excavated very soft. 23 The following gaging stations are being maintained in this basin : Big Muddy river at Cambon, 1908, 1909, 1910. Beauconp creek near Pinckneyville, 1908, 1909, 1910. Big Muddy River near Cambon, III. This station is located at the C, B. & Q. Railroad bridge, about one mile north of Cambon railroad station and about one and one-half miles east of Plumfield, 111. It was established June 16, 1908, for obtaining data for use in studying the problems of drainage, flood control and navigation, also to obtain general statistical and comparative data. The middle fork of the Big Muddy is tributary on the left bank about one-fourth mile above the station; the drainage area above the section is about 735 square miles. The datum of the gage has not been changed ; the records are reliable and accurate. Big Muddy River. Discharge Measurements of Big Muddy River at Camhon, 111. 1908 to 1910. Date. Hydrographer. Width- Feet. Area of section— Sq. ft. Mean velocity —Ft. per sec. Gage height- Feet. Dis- charge- Sec, ft. 1908 June 1909 February March March May November 1910 May May May June R. J. Taylor. 18 R. J 12 Wm 27|Wm 12 H 13 H Taylor M. O'Neill. M. O'Neill. J. Jackson — J. Jackson — C. T. Bailey. C. T. Bailey. C. T. Bailey. C. T. Bailey. 41.6 53 0.37 589 3226 0.94 641 8252 1.25 102 465 1.19 95 455 1.20 26 12 0.10 75 274 1.13 91 358 1.27 100 509 1.53 41 31.4 0.61 2.7 16.58 24.64 8.28 8.27 1.79 6.62 7.56 9.00 2.30 19 3042 10333 542 648 1 311 457 782 19.3 24: Big Muddy Eiver. Daily Gage Height in Feet of Big Muddy River at Carnvbon, III., for 1908 to 1910. Day. June. July. Aug. Sept. Oct. i Nov. Dec. 1 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1 6 1.6 1.6 1.6 1.6 1.6 1.6 4.1 2.8 2.1 1.9 1.8 1.7 1.6 4.7 4.9 3.8 3.0 2.7 2.4 2.2 2.5 3.5 3.2 3.0 3.8 3.5 3.5 2.7 2.7 2.3 2.1 1.9 1.9 .« . 1;8 1.8 1.7 1.7 1.6 1.6 1.6 1.6 1.6 1.6 1.5 1.5 1.5 1.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 , 1.4 1.4 1.1 1.4 . 1.4 1.4 ].4 1.4 1.4 1.4 1.4 1.4 1.4 14 1.4 1.4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1:3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 •1.1 1.1 1.1 1.1 l.X 1.1 • l-i' 1.1 1.1 1.1 1.1- 1.1 13 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1 .5 2 1 1.5 3 1 1.0 4 1.5 5 1 .5 6 1.5 7 1.5 8 1.5 9 ].5 10 1.5 11 1 5 12 1.5 13 14 1 5 15 16 2.5 2.3 2.2 2.1 2.0 2.0 1.9 1.9 1.8 1.8 1.7 1.7 1.6 1.6 1.6 17 1 5 18 1 5 19 ' \ 15 20 1 5 21 1 '^ 22 1 5 23 24 1 5 25 1.5 26 , .., 1.5 29 ' ■ i..'"^ ' .''f'i 1.5 - 1.5 30 ... 1 5 31 S££0! «{• 1 fif; Tc.^ 8?..dl 1)0. G os.s 32.1 «I.f OS. I 01. si.i TS.I 85. £ I().0 asss e^r. sas8 mi adfr 20 r afli. 56 SI ds t^TS ■ 6T 858 le 005 oot t-.I8 It- . . .tol-r&T X .illil V \\\nV.'0 M .mWlsi ■' n M .mWJTS A^cl .1, .HiSI ;-(-)f.i. .1 .H ?A laor OIC: -lUff .T .3 £2 ^«1<' ■AiBQ .T .D 1-2 Xi»V •liBfl .T .:.) ?£ yrs}f -linfT .T .:) h aniiT 25 Big Muddy River. Daily Gage Height in Feet of Big Muddy River at Ca^mbon, 111., foi* 1908 to 1910. 1909. Jan. Apr. May. June. July. Aug. Sept. Oct. Nov. Day. Feb. Mar. Dee. 1 2.6 16.8 3.65 9.95 4.9 6.3 4.9 1.6 2.4 1.8 3.0 2 2.6 14:8 3.35 10.45 4.3 4.5 10.0 1.6 2.3 1.75 2.8 3 2.6 12.9 3.25 7.65 3.8 3.65 10.2 1.6 2.2 1.75 2.7 4 2.6 10.2 3.25 5.2 3.75 3.0 5.4 1.6 2.15 1.75 2.6 5 3.7 6.8 3.25 4.0 4.85 2.7 5.0 1.55 2.15 1.75 2.55 6 3.9 5.5 6.2 3.9 10.65 2.55 3.4 1.55 2.1 1.75 2.55 7 4.1 4.7 10.3 5.35 11.3 2.4 • 3.1 1.55 1.9 1.75 2.55 8 5.2 4.1 11.6 4.7 10.6 5.7 5.1 1.7 1.9 1.8 2.0 9 5.8 16.4 11.2 4.0 9.65 6.1 6.9 1.7 1.9 1.85 2.5 10 5.9 21.2 10.3 7.3 6.5 5.65 4.3 1.7 1.9 1.85 2.5 11 6.0 24.3 9.9 8.5 4.2 8.45 3.4 1.65 1.85 1.85 3.2 12 6.1 24.7 7.1 7.4 3.5 13.95 3.3 1.65 1.85 1.85 7.3 13 6.7 23.8 13.9 6.7 5.3 15.4 3.3 1.65 1.85 1.85 10.4 14 11.7 21.9 14.95 5.05 9.2 18.95 3.15 1.65 1.8 1.9 12.5 15 14.2 20.6 16.45 4.2 10.6 20.55 3.05 1.65 1.8 3.5 13.25 16 14.5 18.75 17.45 4.2 11.2 20.4 3.65 2.2 1.75 4.8 13.55 17 I'.b 15.9 16.9 18.4 4.2 10.1 19.75 2.4 2.1 1.7 4.5 13.65 18 1.5 16.0 12.7 17.1 4.1 6.85 18.7 2.3 2.05 1.7 6.1 13.4 19 1.5 16.4 10.5 ' 16.3 3.6 3.8 16.7 2.2 2.0 1.7 6.8 9.6 20 1.5 16.2 9.7. 17.4 3.2 3.2 12.1 2.0 2.0 1.7 6.1 6.2 21 1.5 15.2 8.2 18.95 2.9 2.9 8.25 1.8 1.95 1.7 5.6 5.4 22 1 7 15.3 7.75 20.05 2.7 2.8 6.15 1.75 2.45 1.7 5.1 4.55- 23 2.0 16.4 6.45 20.15 2.5 2.65 3.9 1.7o 5.6 1.7 6.7 3.75 24 4.1 18.7 4.9 20.25 2.5 ■ 2.45 3.05 1.7 8.65 1.7 7.0 3.2- 25 3.9 20.5 6.8,5 20.2 2.45 4.8 2.7 1.7 7.95 1.75 •8.7 2.9 26 3.6 21.0 8.75 18.25 3.4 J 7.55 2.5 1.7 5.6 1.8 7.6 2.8- 27 3.3 20.5 7.9 17.05 5.5 •'8.2 3.4 1.7 4.2 1.8 5.5 2.7- 28 3.2 18.9 6.2 14.5 8.6 '6.95 3.6 1.7 3.4 1.8 5.5 2.6 29 3.2 5.7 8.9 9.95 7.35 3.2 1.7 3.0 1.8 4.8 2.55 30 3.1 4.5 9.85 8.75 6.5 2.9 1.65 2.7 1.8 3.35 2.6 31 2.6 4.0 6.6 2.7 1.65 1.8 2.45 Gage heights Dec. 8-10, Dec. 25-31 were affected by ice conditions. i ma a ,6,1 f ['nqk ,er 26 Big Muddy River. Daily Gage Height in Feet of Big Muddy River at Camhon, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. April. May. June. I 2.45 2.7 3.2 4.0 4.5 6.25 7.65 4.2 3.9 3.75 3.7 3.65 4.0 4.8 4.35 4.2 3.05 3.7 3.6 3.35 3.4 3.65 3.75 3.95 4.4 4.75 4.8 18.95 21.35 22.35 22.15 21.25 19.9 18.2 17.4 15.3 10.5 6.15 4.8 4.1 3.75 3.4 3.25 3.2 3.05 2.95 2.9 2.75 2.8 2.65 2.6 2.65 2.55 2.55 2.5 2.45 2.35 2.35 2.25 2.25 2.15 2.2 2.25 2.3 2.3 2.35 2.55 2.6 2.45 2.4 2.35 4.25 3.9 4.55 7.85 10.15 8.9 7.7 6,0 5.1 4.25 3.8 3.8 4.15 6.55 8.05 7.7 6.15 5.15 5.35 3.9 5.45 5.85 6.55" 5.55 4.95 5.25 5.7 6.05 6.45 6.15 4.1 4.2 3.85 3.6 3.3 3.05 2.9 2.7 2.55 4.75 6.3 8.6 9.3 7.9 4.7 3.9 3.4 3.1 2.8 2 2.3 3 2.3 4 2.25 5 2.25 6 2.3 2.4 8 2.35 9 2.35 10 2.4 11 4.2 5.6 7.0 8.3 12.25 13.7 14.1 14.9 15.0 14.9 14.8 14,7 14.05 13.9 9.9 6.55 5.7 5.05 5.0 5.0 4.65 2.5 12 2.2 13 2.15 14 2.15 15 2.15 16 2.1 2.1 13 . 2.1 19 2.5 20 2.0 21 2.0 22 - •• 2.0 23 9.i 10.9 11.65 10.6 14.75 16.4 1.95 24 1.95 25 1.95 26 1.9 27 ... 1.9 28 5.3 29 3.2 30 5.9 'i^ Gage heights Jan. 1, 8, 9 and 10, Feb. 16 and 22 were affected by ice conditions. Gage heights Jan. 12, April 19 and 22 were obtained by interpolation. 27 Big Muddy Eiver. Daily Discharge of Big Muddy River at Caonhon, III., for 1908 to 1910. 190«. Day. June. 1 July. Aug. 1 Sept. Oct. Nov. Dec. 1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 84 24 9 6 5 4 3 124 140 67 30 21 15 11 17 52 38 30 67 52 52 21 17 13 9 6 6 5 5 4 4 3 3 3 3 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 4 2 5 2 6 9 1 *> 8 \ 2 2 2 2 2 2 2 2 9 2 10 2 11 2 12 2 13 14 2 15 2 16 17 13 11 9 7 6 6 5 5 4 4 3 3 3 2 17 2 IS ... 2 19 2 20 2 21. . . 2 22 2 23 2 24 . .. 2 25 2 26 2 27 .... 2 28 3 2 2 29 2 2 2 2 2 2 30 .. . 2 31 2 Total 103 465 566 60 31 37 62 2S Big Muddy Eiyer. Dailij Discharge of Big Mtiddy River at Camion, 111, for 1908 to 1910. 1909. Day. Jan. Feb. Mar. April. May. June. July. Aug. Sept. Oct. Nov. Dec. 2 19 3180 60 851 140 3 15 5. 1 140 286 30 2 2 19 2200 44 950 96 110 860' 3 13 4.5 24 3 2 19 1530 40 461 67 60 900 3 11 4.5 21 4 2 19 900 40 166 64 30 186 3 10 4.5 19 5 2 62 350 40 78 136 21 148 2.5 10 4.5 IS 6 2 72 196 274 72 993 18 47 2.5 9 4.5 18 2 84 124 920 18] 1140 15 34 2.5 6 4.5 18 8 2 166 84 1200 124 982 217 157 4 6 ■ 5 15 9 2 228 2950 1110 110 797 262 363 4 6 5.5 12- 10 2 239 6710 920 415 311 212 96 4 6 5.5 10 11 2 250 9940 842 590 90 582 47 3.5 5.5 5.5 38 12 2 262 10400 389 428 52 1860 42 3.5 5.5 5.5 415 13 2 337 9420. 1850 337 176 2450 42 3.5 5.5 5.5 940 14 2 1220 7420 2260 152 716 4700 36 3.5 5 6 1420 15 2 1960 6120 2980 90 982 6080 32 ■ 3.5 5 52 1640 16 2 ?080 4490 3600 90 1110 5940 60 11 4.5 132 1730 17 2 2700 3240 4260 90 880 5360 15 9 4 110 1760 18 2 2750 1470 3360 84 356 4450 13 8 4 26? 1680 19 2 2950 960 2900 57 67 3120 11 ' 4 350 770 20 2 2850 806 3560 38 38 1310 7 ■J- 4 262 274 21 2 2360 542 4700 27 27 550 5 6.5 4 206 186 22 4 2400 475 5620 21 24 162 4.5 16 4 157 114 23 17 2950 304 5720 17 20 72 4.5 206 4 337 64 24 84 4450 140 5800 17 16 32 4 617 4 376 3S 25 72 6030 356 5760 16 132 21 4 5a3 4.5 626 25 26 57 6510 635 4160 ■ 47 448 17 4 206 5 454 20 27 42 6030 496 3330 196 542 47 4 90 5 196 15 28 38 4660 274 2080 590 370 57 4 47 5 196 10 29 38 217 662 851 422 38 4 30 5 132 8 30 34 110 833 635 311 27 3.5 21 5 44 5 31 19 78 324 21 3.5 5 5 Total. 447 53676 76117 69314 8105 11505 38127 3281 1834 190.0 3962.5 11342 Year period, 277900; discharge, Dec. 8-10, Dec. 25-31 was estimated from the daily gage heights, olim- atological and other data. 29 Big Muddy River. Vaily Discharge of Big Muddy Rive?- at Camhon, III., for 1908 to 1010. 1910. . Day. Jan. Feb. Mar. Apr. May, June. 1 2 3 4 5 6 8 9 :. 10 11 12 , 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 ■ 29 30 31 Total 10 21 38 78 110 280 461 350 240 160 90 206 376 558 1350 1780 1920 2240 2280 2240 2200 2160 1900 1850 842 318 217 152 148 148 120 24843 90 72 64 62 60 78 132 100 90 32 62 57 44 47 60 50 50 25 40 50 80 100 698 1050 1210 982 2180 2950 10515 4700 6860 7900 7690 6760 5490 4120 3560 2400 960 268 132 84 64 4? 40 38 32 28 27 22 24 20 19 20 18 18 17 16 14 14 51402 12 12 10 11 12 13 13 14 18 19 16 15 14 93 72 114 489 890 662 468 250 157 93 67 67 87 318 518 162 181 72 191 234 318 201 144 171 217 256 304 268 84 90 70 57 42 32 27 21 18 128 286 608 734 496 124 72 47 34 5260 5689 24 13 13 12 12 13 15 14 14 15 17 11 10 10 10 9 9 9 17 7 7 7 6 6 6 6 6 176 38 239 Discharges Jan. 1, Jan. 8-10, and Feb. 16-22 were estimated from gage heights when available, and climatological and other data. 30 Big Muddy Eiyer. Eating Table for Big Muddij River at Cambon, III. 1908 to 1910. Gage height- Feet. 1.00.-.. 1.10.... 1.20.... 1.30.... 1.40.... 1.50.... 1.60.... 1.70.... 1.80.... 1.90.... 2.00.... 2.10.... 2.20.... 2.30... 2.40.... 2.50... 2.60... 2.70... 2.80... 2.90... 3.00... 3.10... 3.20... 3.30... 3.40... 3. .50... 3.60..: 3.70... 3.80... 3.90... 4.00... 4.10... 4.20... 4.30... 4.40... 4.50... 4.60... 4.70... 4.80... 4.90... 5.00... 5.10... 5.20... 5.30... 5.40... 5.50... 5.60... 5.70... 5,S0... 5.90... 6.00... 6.10... 6.20... 6.30... 6.40... 6. .50... 6.60... 6.70... Dis- charge- Sec, ft. 9 11 13 15 17 19 21 24 27 30 34 38 42 47 52 57 62 67 72 78 84 90 96 103 110 117 124 132 140 148 157 166 176 186 196 206 217 22S 239 250 262 274 286 29S 311 324 337 Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 6.80. 6.90. 7.00. 7.10. 7.20. 7.30. 7.40. 7.50. 7.60. 7.70. 7.80. 7.90. 8.00. 8.10. 8.20. 8.30. 8.40. 8.50. 350 363 376 389 402 415 428 441 454 468 482 496 510 526 542 558 574 590 8.70 626 8.80 644 8.90 (362 9.00 680 9.10 698 9.20 716 9.30 734 9.40 752 9.50 770 9 60 788 9.70 806 9.80 824 9.90 842 10.00 860 10.10 880 10.20 900 10.30 920 10.40 940 10.50 960 10.60 982 10.70 1004 10.80 1026 10.90 1048 11.00 1070 11.10 1092 11.20 1114 11.30 1136 11.40 1158 11.50 1180 11.60 1202 11 70 1224 11.80 1246 11.90 1268 12.00 1290 12.10 1314 12.20 1338 12. .30 1364 12.40 1390 12.50 1416 12.60 1444 12.70 1472 12.80 1500 12.90 1530 13.00-. 1560 13.10 1590 13.20 1620 13.30 1652 13.40 1684 13.50 1716 13.60 1748 13.70 1780 13.80 1812 13.90 1846 14.00 1880 14.10 1920 14.20 1960 14.30 2000 14.40 2040 14.50 2080 14.60 2120 14.70 2160 14.80 2200 14.90 2240 15.00 2280 15.10 2320 15.20 2360 15.30 2400 15.40 2450 15.50 2500 15.60 2550 15.70 2600 15.80 2650 15.90 2700 16.00 2750 16.10 2800 16.20 2850 16.30 2900 16.40 2950 16.50 3000 16.60 3060 16.70 3120 16.80 3180 16.90 3240 17.00 3300 17.10 3360 17 20 3420 17.30 3490 17.40 3560 17.50 3630 17.60.... 3700 17.70 3770 17.80 3840 17 90 3910 18.00 3980 18.10 4050 18.20 4120 18.30 4190 height— Dis- charge- Sec, ft. 18 40 . 4260 18 50 4340 18 60 .. 4420 18 70 4450 18.80 18 90 ........ 4580 4660 19 00 4740 19 10 4820 19 20 4900 19 30 .. 4980 19 40 . .. 5060 19 50 .. 5140 19 60 5220 19 70 .. 5310 19 80 5400 .19 90 5490 20 00 5580 20 10 5670 20 20 5760 20 30 - .. 5850 20 40 5940 20 50 . .. 6030 20 60 .. 6120 20 70 6210 20 80 . .. 6310 20 90 6410 21 00 .. 6510 21 10 6610 21 20 6710 21.30 21 40 . . - . 6810 6910 21 50 7010 21 60 7110 21 70 7215 21 80 7320 21 90 7425 22 00 7530 22 10 7635 22 20 7740 22 30 7845 22 40 7950 22 50 8055 22 (iO ... 8160 22 70 8265 22 80 8370 22 90 8475 23. (K) 23 10 8580 8685 23 20. ... 8790 23.30 23 40 8895 9000 2.3. .50 2.3 60 9105 .. 9210 23 70 9315 23.80 23 90 9420 9525 24 00 .. 9630 25.00 10680 NOTK-Thc above table i.s not j.ppliral)lo for ice or ob.structed channel conditions. It is based on 10 disrhnrne mtasuromonts made diiriim I9()s-I910 and is fairly well defined. Above gage height 22.0 feet tiip n.iiiiL' curve i.s !i tiiiitront, the diircrcnce being 105 per tenth. 31 Big Muddy Eiver. Monthly Discharge of Big Muddy Rive?' near Camhon, III, for lOOS and 1909. (Drainage area 735 square miles.) Month. 1908. June 16-30 . . July August , September October November December . 1909. January February March April May June July ;: August September October November December The year. . 1910. January February March April May June Discharge in Second-Feet. Maximum. 17 140 67 2 1 2 2 84 6,510 10,400 5,800 950 1,140 6,080 900 617 15 626 1,760 10,400 2,280 2,950 7,900 890 734 239 Minimum. 3 3 2 2 1 1 2 2 19 78 40 16 16 15 3.5 2.5 4 4.5 Mean. 6.87 15.0 18.3 2.0 1.0 1.2 2.0 14.4 1920 2460 2310 261 384 1230 106 61.1 6.13 132 366 771 801 376 1660 175 184 25.0 Second-feet per square mile. .0093 .020 .025 .0027 .0014 .0016 .0027 .020 2.61 3.35 3.14 .355 .522 1.67 .144 .083 .0083 .180 .498 1.05 1.09 .511 2.26 .238 .250 .034 Run-off. Depth in inches. Accuracy, .005 .02 .03 .003 .002 .002 .003 .02 2.72 3.86 3.50 .41 . .58 1.92 .17 .09 .01 .20 .57 14.05 1.26 .53 2.61 .27 .29 .04 32 Beaucoup Creek ^EAll Pinckxeyville, III. This station is located at the I. C. Raikoad bridge, about one and one-half miles east of Pinckneyville, 111. It was established June 17, 1908, for the purpose of obtaining data for use in studying drainage and flood control problems, and to obtain general statistical and com- parative data. „ , , , 1 XI Little Beaucoup creek is tributary on the left bank below the gaging station, and Galuin creek is tributary on the right bank about ten miles below the station. The drainage area above the section is about 227 square miles. , n • -x • x n ^• The datum of the gage has remained unchanged since its installation. The records for 1908 were taken whenever the gage reader happened to be in the vicinity of the gage. Except in a few cases, fairly accurate results will be obtained if the missing gage heights are interpolated. The flood of 1902 reached a height of about 27.5 feet on the present o-aae • The creek goes dry at times; the water then stands in pools near the gage. ocffi • Big Muddy River. Discharge Measurements of Beaucoup Creek at Pinckneyville, III, 1908 to 1910. Date. Hydrographer. 1908 June 1909 February March March March March May May November 1910 May May Ma> R. J. Taylor. R.J. Taylor Wm. M. O'Neill . Wm. M. O'Neill. Wm. M. O'Neill. Wm. M. O'Neill. H. J. Jackson... H. J. Jackson... H. J. Jackson . . . C. F. Bailey. C. F. Bailey. C. F. Bailey . Width- Feet. Area of section — Sq. ft. velocity —Ft. per Gage height- Feet. Dis- charge- Sec, ft. 53 48 0.26 2.3 130 916 0.66 9.67 87 289 0.26 3.97 130 862 0.58 8.95 128 692 0.65 7.87 106 396 0.43 5.25 128 652 0.47 7.42 107 477 0.45 5.93 66 67 0.0 *1.73 65 74.9 0.12 2.41 122 538 0.69 7.24 104 309 0.47 5. 28 Discharge estimated as 0.3 cu. ft. per sec. at riffle about 200 yards above .section. 602 76 502 449 170 304 217 9.2- 373 147 33 Big Muddy Kiver. Dailif Gage Height in Feet of Beaucoup Creek at Pitickneyville, III., foi 1908 to 1910. 1908. Day. Jan. Feb. Mar. A-pr. May June. July. Aug. Sept. Oct. Nov. Dec. 1 3.4 2 2 1.6 3 2.3 1.9 1.2 4 5 1.6 1.0 1 9 6 2.9 6.0 8 2.2 1.6 9 1.8 10 1.2 11 2.0 2.3 1.0 12 1 8 13 1.6 14 1.9 15 2.0 16 1 7 17 2.3 1.0 18 i.8 1.85 1.8 19 2.0 2.0 1.5 1 7 20 21 1.8 1.0 1 7 22 1.4 i.3 23 1.25 24 1.8 1.8 25 2.9 1.7 26 1 6 27 3.5 1.2 "i'o" 1.0 28 29 1.8 2.8 1.7 1 6 30 31 1 6 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 2 1.8 2.5 3.9 2.8 2.85 2.75 2.7 3.2 8.9 12.8 2.8 2.75 • 2.7 2.6 2.55 2.75 3.9 4.5 3.1 2.7 3.7 5.0 4.5 3.8 3.5 2.2 2.1 2.0 1.95 1.9 1.9 5.2 3.1 2.45 2.3 2.2 2.1 2.75 1.6 1.6 1.6 16 1.6 1.6 1 .75 1.8 1.8 1.8 1.8 1.75 1.7 1.7 1 .7 1.75 1> 2.4 2 3 3 3.7 3.1 2 3 4 5 1.8 2.5 2.2 2 25 6 3.3 2.7 2.3 2 3 —3 S W Big Muddy River. Daily Gage Height in Feet of Beaucoup Creek at Pinckneyville, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr May. June. JrJy. Aug. Sept. ! Oct. I Nov. Dec. 1.8 'lis 1.7 1.7 '2.Z 2.3 2.2 3.3 3 '4' 14.1 12.0 5.1 4.5 13.6 9.67 9.1 16.6 16.4 4.9 4.1 20.85 20.7 17.3 3.1 2.8 2.7 2.7 2.9 3.55 3.6 3.7 3.85 6.6 9.9 5.25 3.1 3.0 2.1 12.75 4.6 3.75 2.7 2.6 16.0 19.7 11.3 7.5 5.2 4.9 9.1 12.8 19.2 17.9 14.1 10.3 8.1 6.3 0.4 4.0 3.1 2.9 4.6 7.8 12.6 5.9 4.4 4.1 3.4 4.3 5.0 4.5 •4.1 2.6 2.5 2.4 2.3 2.2 2.1 2.1 4.3 3.4 2.5 3.6 4.9 2, 2 2. 2 2 1 1 1.9 1.9 1.9 1.85 1.8 1.8 1.75 1.7 1.7 1.7 1.7 1.7 3.0 2.95 2.5 4.9 7.4 12.0 5.4 14.5 15.85 18.8 16.0 6.7 4.1 2.75 2.5 2.45 2.2 2.1 2.5 2.0 1.9 1.9 2.1 2.55 5.0 3.75 2.7 3.45 2.65 2.55 2.2 2.1 2.0 1.9 1.85 1.8 1.8 1.75 .65 .7 .65 1.65 1.65 1.65 1.6 1.6 1.6 .75 .7 .7 .7 .65 1.65 1.6 1.6 1.55 1.95 2.5 4.3 5.2 5.0 3.1 2.2 2.1 2.0 1.95 1.65 1.65 1.65 1.65 1.65 1.6 1.6 1.6 1.6 1.6 2.0 1.95 1.85 1.85 2.0 1.95 1.9 1.85 1.85 1.8 1.8 1.75 1.75 1.7 1.7 1.6 1.8 1.9 1.95 1.9 3.75 3.9 3.3 3.2 4.2 3.9 2.9 2.55 2.5 3.55 9.2 4.4 3.2 2.75 2.55 2.5 2.5 2.5 2.5 2.6 3.1 8.2 13.25 11.35 6.85 5.6 4.55 3.45 3.2 3.1 2.75 2.35 2.2 2.1 2.15 2.2 2.2 2.15 2.1 2.1 2.1 Gage heights Dec. 29-31 were affected by ice conditions. 35 Big Muddy Eiver. Daily Gage Height in Feet of Beaucoup Creeh at Pinchneyville, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 2.1 2.4 2.55 4.2 3.8 4.0 5.4 4.2 3.8 2.4 2.5 2.35 7.55 13.2 14.8 10.3 5.55 8.0 14.05 9.8 7.3 6.2 4.45 3.45 3.2 3.1 3.0 3.45 4.0 3.6 2.95 2.85 2.7 2.8 2.95 3.0 3.1 3.0 3.05 2.8 2.75 2.7 2.6 2.75 2.9 3.0 3.05 3.15 3.35 3.4 3.5 3.5 4.6 6.05 5.35 5.0 4.15 14.2 21.1 19.85 17.25 15.9 9.45 6.2 5.45 4.4 3.85 3.45 3.3 3.1 2.95 2.95 2.8 2.8 2.65 2.6 2.55 2.55 2.55 2.45 2.45 2.45 2.4 2.4 2.35 2.3 2.3 2.25 2.25 2.2 2.15 2.2 2.15 2.2 2.25 2.95 2.3 2.2 2.4 2.3 2.25 2.6 2.35 2.95 2.9 3.15 4.2 5.25 4.15 3.7 3.25 3.0 2.75 2.7 2.65 2.65 3.3 4.05 3.85 3.25 2.9 8 15 1 75 85 4.7 5.55 4.2 3.55 3.6 3.55 3.25 3.05 2.7 3.0 2.45 2.4 2.65 2.6 3.15 3.7 7.0 5.4 3.7 3.05 2.7 2.45 2.3 2.2 2.1 2.1 2.05 2.0 2.05 2.1 2.05 2.0 2.25 2.4 2.25 2.15 2.1 2.1 2.1 2.1 2.05 2.0 1.95 1.9 1.9 1.9 1.8 1.8 1.75 1.7 1.7 2.9 2.2 2.05 Gage heights on Apr. 17-20, May 8-22 and June 5 and 26 were obtained by interpolation. 36 Big Muddy Kivek. Daily Discharge of Beaucaup Creek at Pinchneyville, III., for 1908 to 1910. 190S. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 .■jO 3 2 1 3 8 3 4 5 1 3 6 28 227 7 8 6 1 9 2 10 11 3 8 12 2 13 1 14 3 15 3 16 2 17 8 1*< 2 2.5 2 19 3 3 1 2 20 21 2 2 22 1 23 24 2 2 26 28 2 26 1 27 55 6' 28 29 2 24 2 1 30 31 1 Total 20 183.5 276 5 19 37 Big Muddy Kiver. Daily Discharge of Bcaucoup Creek at Finckneyville, 111., for 190.8 to 1910. Pay i Jan. Feb. Mar. Apr. May. June. Julv. Aug. Sepc Oct. Nov. 2 14 75 24 24 112 55 163 2 2 2 14 70 26 22 36 6 36 2 2 2 14 65 22 20 20 4 12 2 2 2 14 36 20 17 65 3 8 2 2 2 30 28 40 16 147 3 6 2 2 2 45 20 512 22 112 3 4 2 2 2 66 727 1010 75 70 3 22 2 2 2 2 86 1430 1000 119 28 353 18 2 1.5 2 2 72 2140 119 393 14 900 16 2 1.5 1 2 69 2120 68 984 4 179 6 2.5 1.5 2 2 45 1640 20 219 3 1250 4 2 1.5 3 2 48 860 17 105 3 1440 3 2 1.5 3 2 60 80 1460 86 3 18.50 3- 2 1 3 2 620 58 1980 50 3 1460 2.5 2 i 68 2 1190 36 809 98 3 290 2 2 1 75 2 900 36 363 147 3 86 2 1.5 1 45 2 155 24 163 112 3 22 2 1.5 1 40 2 112 20 140 86 2.5 14 1 3 92 2 616 20 534 17 2 12 2 1 3 75 2 1120 28 1010 14 2 6 2 1 2.5 28 2 600 58 1910 11 2 4 3 2 5 16 o 567 60 1730 8 2 14 14 3 14 8 534 65 1190 6 2 3 1.5 98 3 58 8 1540 72 679 4 2 3 2 163 3 545 8 1520 281 424 4 2 3 1 .5 147 2.5 105 8 140 628 254 51 o 4 1 .5 36 2.5 40 7 86 167 179 98 32 16 1 .5 6 2 22 7 80 99 80 50 30 147 1.5 4 2 16 6 36 36 14 14 68 3 2 14 9 32 28 60 140 20 3 2 14 11 4 140 52 2 119 10337 11015 >.,,47 3072 863.5 8273 333.0 507.5 61.5 1295 1 2 3 4 5 6 s'.'.V.'. P 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Total 7 8 8 14 14 17 36 435 1080 816 304 195 116 52 40 38 22 10 6 6 4 3 2 2 3281 Year period, 55001.5. The discharge on those days on which the gage heights are missing and on those days when aflfected by ice conditions was obtained from studies of climatological and other data. 38 Big Muddy River. Daily Discharge of Beaucoup Creeh at PinckneyvilU, 111., for 190S to 1910. 1910. Day. Jan. Feb. Mar. Apr. May June 1 July Aug. Sept. Oct. Nov. Dec. 1 4 11 16 92 70 80 179 92 70 11 14 10 368 1070 1290 679 191 413 1190 616 344 245 108 52 40 36 32 52 80 60 30 26 20 24 30 32 36 32 34 24 22 20 17 22 28 32 34 38 48 50 55 55 119 232 175 147 89 1210 2170 2000 1640 1450 574 245 183 105 72 52 45 36 30 30 24 24 18 17 16 16 16 12 12 12 11 11 10 8 8 7 7 6 5 6 5 6 7 30 8 6 11 8 7 17 10 30 28 38 92 167 89 65 42 32 22 20 18 18 45 83 72 42 28 24 80 430 155 68 72 126 191 92 58 60 58 42 34 20 32 12 11 18 17 38 65 317 179 65 34 20 12 8 6 11 4 4 3 3 3 3 3 2 2 2 2 2 28 6 4 1 1 2 i 1 3 i 1 4 1 5 i 6 1 7.. . . 8 9 . . . 10 11 - - 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Total. 7545 4821 6697 1029 2372 143 39 Big Muddy River. Eating Table for Beaucoup Creeh at Pinckneyville, III., for 1908 to 1910. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet Dis- charge- Sec, ft. Gage height- Feet. Dis- charge — Sec. ft. Gage height- Feet. Dis- charge- Sec, ft. 1 00 5.80 5.90 6.00 6.10 6.20 6.30 6.40 6.50 6.60 6.70 6.80 6.90 7 CO 211 219 227 236 245 254 263 272 281 290 299 308 317 10 60 718 15.40 15.50 15.60 15.70 15.80 15.90 16.00 16.10 16.20 16.30 16.40 16.50 16.60 16.70 16.80 16.90 17.00 17.10 17.20 17.30 17.40 17.50 17.60 1376 1.10 1 20 10.70 10 80 731 .. 744 1390 1404 1 30 - 10 90 757 1418 1.40 1.50 1 60 1 1 1 11.00 11.10 11.20 11.30 11.40 U 50 - 770 783 796 809 822 835 1432 1446 1460 1.70 l.SO 1 90 2 2 3 3 1474 1488 1502 2 00 11.60 11.70 11.80 11 90 848 861 874 •.. 887 1516 2 10 4 1530 2 20 6 1544 2 30 ... 8 7 10 - . . . 326 1558 2 40 11 7.20 7.30 7.40 7.50 7 60 335 344 353 363 . 3;3 12.00 12.10 12.20 12.30 12.40 12.50 12 60-. 900 914 928 942 956 970 984 1572 2 50 14 1586 2 60 17 1600 2 70 20 1614 2 80 - - 24 1628 2 90 . 28 7 70 383 .. 1642 3 00 32 7.80 7.90 8.00 8.10 8.20 8.30 8.40 8.50 8.€0 8 70-.- 393 403 413 424 435 446 457 468 479 4 90 1656 3 10 - 36 12.70 12.80 12.90 13.00 13.10 13.20 13.30 13.40 13.50 13.60 13.70 13.80 13.90 14.00 14.10 14.20 14.S0 14.40 14.50 14.60 14.70 14.80 14.90 15.00 15.10 15.20 15.30 998 1012 1026 1040 1054 1068 1082 1096 1110 1124 1138 1152 1166 1180 1194 1208 1222 1236 --- 1250 1264 1278 1292 1306 1320 1334 1348 1362 1670 3 20 -- - - 40 1684 3 30 45 17.70 1698 3.40 3 50 60 {5 17.80 17.90 18.00 18.10 18.20 18.50 18.40...... 18.50 18.60 18.70 18.80 18.90 19.00 19.10 1712 1726 3.60 S.70 3.80 3 90 60 65 70 75 1740 1754 1768 1782 4 00 80 8.80 8.90 9.00 9.10 9.20 9.30 9.40 9.50 9.60 9.70 9.80 9.90 10.00 10.10 10 20 501 512 523 534 545 556 568 580 592 604 616 628 640 653 . 666 1796 4.10 86 1810 4 20-. 92 1824 4 30 98 1838 4 40-- 105 1852 4 50 112 - - - 1866 4 60 119 1880 4.70 126 133 140 147 155 .- -. 163 1894 4.80 4.90 5.00 5.10 5 20-- 19.20 19.30 19.40 19.50 19.60 19.70 19.80 19.90 20.00 1908 1922 1936 1950 1964 5.30 5 40 171 179 187 195 203 1978 1992 5.50 5.60 5.70 10.30 10.40 10.50 679 692 705 2006 2020 Note— The above table is not applicable for ice or obstructed channel conditions. It is based on 12 discharge measurements made during 1908-1909. Above gage height 12 feet the rating curve is a tan- gent, the difference being 14 per tenth. 40 Big Muddy Eiver. Monthly Discharge of Beaucoup Creel: at Pinckneyville, III, for 190S to 1910. Month. Discharge in Second-feet. Maximum. Minimum. I'JOS January February March — April May June (5 daj's) July (11 days) August (9 days) September (7 days) . October (6 days) November (4 days).. December ',10 days) . The j^ear.. 1909 January February March April May June. July August September October November December Mean. Run-off. Second-feet per square mile. Depth in • inches. Accuracy. The year. . 1910 January February March...' April May June July August September October November. . . December 1.540 2140 IGSO 98 i 147 1850 163 \& 3 545 lOSO 1290 2170 2000 167 430 2S 4.0 16.7 30 7 0.7 .0 .0 1.9 3.8 369 35c 528 99.1 28.8 267 10.6 16.9 1.98 43.2 106 243 172 216 34. 76. 4. .018 .074 .135 .0031 .0 .0 .0084 .017 1.63 1.56 2.33 .437 .127 1.18 .047 .074 .0087 .019 .467 .678 1.07 .758 .952 .151 .337 .021 .02 .08 .16 .003 .0 .0 .01 .02 1.69 1.80 2.60 .50 .14 1.36 .05 .08 .01 .02 .54 8.81 1 23 .79 1.10 .17 .39 02 The year. 41 EMBAKRAS ElVEK. Descriptiox. The drainage area of the Embarras river lies in the sontheastern por- tion of the State of Illinois. The river rises in the central part of Champaign count}:, near Frbana, flows in a southerly direction through Douglas, Coles and Cumberland counties to the center of Jasper county, whence it flows in a general southeasterly direction diagonally across Jasper county, the southwestern corner of Crawford county and thence across Lawrence county to its junction with the Wabash river about midway between Vincennes, Ind.-, and St. Francisville, 111. The river is extremely crooked, long tortuous bends being numerous; its length, exclusive of the bends, is about 125 miles. The most important tributary is Hickory creek or North Fork creek, which is tributary from the left bank about two and one-half imles below St. Marie, 111. The total drainage area is about 2,410 square miles. The drainage basin is long and narrow with a length of about 100 miles and a fairly uniform width ranging from 15 to 30 miles. The surrounding country is level or gently rolling, with some small hills along the river. The sources of the river are about 730 feet and the mouth about 400 feet above sea level. In the lower portion of tho drainage basin in the vicinity of St. Marie the soil is sandy along the river, while to the north and west occurs the familiar black loam. To the east the soil is a light colored clay, Avhich was formerly covered with a heavy growth of "water oak.^' There has been very little drainage done in the uplands, but the bottoms are drained to some extent. There are extensive oil fields in the southwestern portion of the drainage basin west of Lawrence ville. In the upper portion of the drainage area, in the vicinity of Oakland, there is a sandy red soil near the river and black loam away from the river; one mile from the river on either side is prairie country. The chief crop in the drainage basin is corn, with some wheat. The overflow of the river does a large amount of damage and inundates large areas of bottom land throughout the entire length of the river. There are no forested areas in this drainage basin. The mean annual rainfall is about forty inches. The conditions during the winter period are mild, as a rule, with snowfall extending over a period of about two months and lasting only a few days at a time. Ice in the river averages three or four inches for about a month. The storage possibilities have 42 not been investigated. There are no opportunities for water power. There are no springs and little or no ground-water storage to keep up the low water flow, and in consequence there is little flow in the river during periods of extreme drought. During wet seasons the ground becomes saturated and heavy rains are carried to the river much- more rapidly than the stream can take care of and damaging floods result. Land drainage and flood control are subjects of considerable importance in this drainage area, and are being investigated at the present time. Two gaging stations have been established and are being maintained in this drainage basin: Embarras river near Oakland, 111., 1909, 1910. Embarras river at St. Marie, 111., 1909, 1910. Embarras Eiver near Oakland, III. This station is located at the highway bridge known as the "Antiocli Bridge," about two miles northwest of Oakland, 111., on the county-line road to Hindoboro and Areola. It was established Oct. 23, 1909, for the purpose of obtaining data for use in studying water supply, drainage and flood control problems, and also to obtain general statistical and comparative data. Brushy Fork creek is tributary from the left bank about five miles above the station. The total drainage area above the gaging station is .^oo square miles. The datum of the gage has remained unchanged since its installation ; tlie data are accurate and reliable. There was no flow at this station during a portion of the summer of 1908. The flood of 1897 reached a height of about twenty- four feet by the present gage datum. Embarras Eiver. Discharge Measurements of Embarras River near Oal'land, III., 1909 and 1910. Date. Hydrographer. Width- Feet. Area of section— Sq. ft. Mean velocity —Ft. per Gage height- Feet. Dis- charge- Sec, ft. 1909 October October December 1910 March March March May H. J. Jackson. H. J. .Iiu-kson. H. J. Jackson. M. C. McChristip. 12|M.('. McChristie. 12M.C. McChristie. 2fiH. J. Jackson 87 165 0.15 2M 90 237 0.32 .S.20 92 276 0.46 3.70 119 628 1.26 7.11 105 426 1.0? 5.44 105 430 0.97 5.46 160 894 1.38 9.02 24 76 (a)l26 792 440 419 1230 (a) 31 per cent of di.scharge under ice cover. 43 EmBARRAS ElVER. Daily Gage Height in Feet of Emharras River near Oakland, III., for 1909 and 1910. 1909. Day. Oct. Nov. Dec. 1 2.4 2.45 2.6 2.6 2.55 2.5 2.45 2.6 2.65 2.55 2.5 2.5 2.45 2.5 2.65 2.8 4.6 5.0 4.55 4.1 4.0 4.9 6.7 6.6 6.4 5.85 4.65 4.3 3.9 3.85 3 95 2 . . 3 8 3 . 3 85 4 3.75 3 7 5 6 3 9 7 3 7 8 3 7 9 3 8 10 3 85 n 3 95 12 4.0 7 5 13 . 14 8 7 15 ... 8 65 16 7 9 17 6 8 18 . . ... 6 2 19 6 20 5 75 21 5 65 22 5 4 23 - - - 2.85 3.2 3.2 3.1 2.9 2.65 2.6 2.45 2.3 5 2 24 5 15 25 5 1 26 5 1 27 5 28 4 9 29 4 5 30 4 4 31 4 25 Gage heights Dec. 8-12, Dec. 21-31 were affected by ice conditions. 44 Embarras River. Daily Gage Height in Feet of Emharras Biver near Oakland, III., for 1909 and 1910. 1910. Day. ran> Feb. Mar. Apr. May. Jime. 4.7 4.7 13.0 3.35 4.75 5.1 4.9 4.8 12.5 3.45 5.0 4.8 5.85 5.1 10.5 3.35 5.25 4.6 5.9 5.0 10.0 3.3 6.2 4.5 5.8 4.95 9.2 3.25 5.65 4.4 5.85 4.9 8.4 3.2 5.45 4.3 5.6 4.65 7.3 3.15 5.25 4.1 5.4 4.6 6.9 3.2 5.2 4.0 5.0 4.5 6.1 3.25 6.95 3.9 4.6 4.45 5.8 3.25 6.8 3.8 4.4 4.2 5.55 3.25 6.8 3.75 5.2 4.0 5.4 3.3 7.7 3.5 10.55 4.0 5.2 3.35 7.7 3.4 14.15 3.95 5.15 3.4 7.6 3.35 15.0 3.95 4.9 3.45 7.3 3.3 13.5 3.9 4.8 3.5 6.25 3.2 11.2 3.85 4.7 3.9 5.8 3.1 12.5 3.85 4.5 4.05 5.15 3.0 13.5 3.9 4.3 4.0 5.0 2.8 12.4 3.8 4.25 4.0 4.8 2.75 10.45 3.9 4.2 3.9 4.45 2.7 9.0 4.1 4.15 3.9 4.2 2.55 7.6 4.2 4.1 3.9 7.9 2.55 6.2 3.9 4.0 3.9 9.1 2.5 6.0 4.1 3.95 3.95 9.5 2.4 5.8 4.2 3.95 4.2 8.55 2.3 5.6 5.0 3.9 4.2 7.1 3.5 5.3 9.0 3.85 4.2 6.1 4.7 5 1 3 7 4 4 5 8 5 5 05 3 55 5 6 5 1 4.8 3.4 5.5 ! 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Gage heights Jan. 1-11, Feb. 17-21 were affected by ice conditions. '15 Embarras Rjveu. Daily Discharge of Embarras River near Oakland, III., for 1009 and 1910. 1909. Day. Oct. Nov. Dec. 1 27 30 37 37 34 32 30 37 40 34 32 32 30 32 34 49 260 336 252 179 165 316 693 671 627 508 269 210 152 146 158 2 . .. 140 3 146 4 134 128 6 152 1''8 8 126 9 100 10 ^ 100 11 120 12 140 13 878 14 1190 1170 16 , 975 17 715 18 583 19 540 20 .... 488 21 22 23 52 76 76 68 55 40 37 30 22 300 24 25 26 27 2« . . [ 200 29 1 30 31 Tjtal 456 5331 10,811 1 Discharge Dec.^ 8-12, Dec. 21-31 was estimated from the daily gage heights, cliraatological and other data. AG Embaeuas Eivee. Daily Discharge of Emlarras River near Oakland, III, for 1909 and 1910. 1910. 10.. 11.. 12.. 13-. 14.. 15-. 16.- 17.- 18.. 19.. 20-. 21.. 22.. 23-- 24.. 25-- 26.. 27.. 28. 29.. 30.. 31. Day, Total Jan. 300 300 300 300 300 300 300 200 200 200 200 376 1770 3200 3560 2920 2000 2500 2920 2460 1730 1270 902 583 540 498 456 396 356 346 297 31980 Feb. 278 297 356 336 326 316 269 260 243 234 194 165 165 158 158 152 100 100 50 40 60 179 194 152 179 194 336 1270 Mar. 6761 2710 2500 1750 1580 1330 1100 830 737 561 498 446 416 376 366 316 297 278 243 210 202 194 186 179 165 158 158 152 146 128 110 95 Apr May. 18417 90 100- 90 85 80 76 72 76 80 80 80 85 90 95 100 105 152 172 165 165 152 152 152 152 158 194 194 194 226 243 3855 336 386 583 466 426 386 376 748 715 715 926 926 902 830 594 498 366 336 297 234 194 975 1300 1420 1150 783 561 498 456 436 19107 June. 356 297 260 243 226 210 179 165 152 140 134 105 95 90 85 76 68 61 49 46 43 34 34 32 27 22 105 278 336 356 4304 Discharge Jan. 1-11 , Feb. 17-21 was estimated from the gage readings and from climatological and other data. 47 Embaeras Eivek. Bating Table for Emharras River near Oakland, III. 1909 to 1910. Gage height- Feet. Dis- charge — Sec. ft. Gage height- Feet. Dis- charge — Sec. ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 2 00 5.30 5.40 5.50 5.60 5 70 396 416 436 456 477 8.60 8.70 8.80 8.90 9.00 9.10 9.20 9.30 9.40 9.50 9.60 9.70 9.80 9.90 10.00 10.10 10.20 10.30 10.40 10.50 10.60 10.70 10.80 10.90 11.00 11.10 11.20 11.30 11.40 11.50 11.60 11.70 11.80 1159 1186 1214 1242 1270 1299 1328 1358 1388 1419 1450 1482 1514 1547 1580 1614 1648 1682 1717 1752 1787 1822 1858 1894 1930 1966 2002 2039 2076 2113 2150 2187 2224 11.90 12.00 12.10 12.20 12.30 12.40 12.50 12.60 12.70 12.80 12.90 13.00 13.10 13.20 13.30 13.40 13.50 13 60 2262 2.10 2300 2.20 2340 2 30 22 2380 2.40 27 2420 2.50 32 5 80 498 2461 2 60 37 5.90 6.00 6.10 6.20 6.30 6 40 519 540 561 583 605 627 2502 2.70 43 2543 2 80.. 49 . .. 2584 2 90 55 2626 3.00 61 2668 3.10 68 76 2710 3 20 6.50 6.60 6.70 6.80 6.90 7.00 7.10 7.20 7.30 7 40 649 671 693 715 737 760 783 806 830 . . .. 854 2752 3.30 85 2794 3 40 95 2836 3.50 3.60 3 70 105 116 128 2878 2920 2963 3 80 140 13.70 13.80 13.90 14.00 14.10 14.20 14.30 14.40 14.50 14.60 14.70 14.80 14.90 15.00 3006 3.90 152 3049 4.00 4.10 165 179 3092 3135 4.20 194 210 7.50 878 3178 4 30 7 60 . 902 3221 4.40 226 7.70 7.80 7 90 . 926 950 975 3264 4 50 243 3307 4 60 ... . 260 3350 4.70 278 8.00 8.10 8.20 8.30 8.40 8.50 1000 1026 1052 1078 1105 1132 3393 4 80. . 297 3436 4.90 5.00 5.10 5.20 316 336 356 ?.'iR 3479 3522 3565 Note. — The above table is not applicable for ice or obstructed channel conditions. It is based on discharge measurements made during 1909 and 1910. Embaeras Eiver. Montlily Discharge of Emharras River near Oakland, III., 1909 and 1910. (Drainage area 535 square miles.) Month. Discharge in Second-feet. Maximum. Minimum. Mean. Run-off. Second-feet per square mile. Depth in inches. Accuracy. 1909 October 23-31 . November... December 1910 January February March April May June. 76 22 50.7 693 27 178 1190 349 3560 1030 1270 140 255 2710 95 594 243 72 128 1420 194 616 356 22 143 .095 .333 .652 1.93 .477 1.11 .239 1.15 .267 .03 .37 .75 2.22 .50 1.28 .27 1.33 .30 48 EmBAKKAS KlVER NEAR St. MaIUE, IlL. This station is located at the highway bridge at the north end of Main street, St. Marie, 111., about 150 yards downstream from the C, H. & D. Eailroad bridge. It was established Oct. 20, 1909, for the purpose of obtaining data for use in studying problems of water supply, drainage, and flood control, and also to obtain general statistical and comparative data. Hickory creek, or Xorth Fork creek, is tributary from the left bank about two and one-half miles below the station. The total drainage area above the gaging station is about 1,540 square miles. The datum of the gage has remained unchanged since its installation ; the data are accurate and reliable. The flood of the spring of 1908 reached a height of al)out 22.5 feet by the present gage datum. Embarras River. Discharge Measurements of Embarras River at St. Marie, III., for 1909 and 1910. Date. August August October 1910 March April May Mav May May May May Hydrographer. 20 Width- Area of section— Sn. ft. H. J. Jackson. .. H. J.Jackson. . . H. J.Jackson. . . M. E. McChristie H.J.Jackson. . . C. T. Bailey C. T. Bailev .... C. T. Bailey C. T. Bailey C. T. Bailey C.T. Bailey Mean velocity —Ft. per sec. Gage height- Feet. 97 634 0.39 111 432 0.55 112 368 0.49 174 2156 2.13 112 462 0.65 122 1040 1.71 120 955 1.64 118 839 1.44 117 760 1.33 117 753 1.33 116 711 1.34 *3.48 3.44 2.89 16.01 3.70 8.67 8.06 7. IS 6.53 6.43 6.06 Dis- charge — Sec. ft. 245 236 181 4604 301 1780 1570 1210 1010 1000 953 -Mcasuremont not at regular .section. 49 Embarras Eiver. Daily Gage Height in Feet of Embarras River at St. Marie, III., for 1909 and 1910. 1909. Day. Oct. Nov. Dec. 1 2.2 2.2 2.3 2.2 2.2 2.1 2.15 2.15 2.15 2.2 2.2 2.2 2.2 2.2 2.3 2.3 2.7 4.4 3.5 3.0 3.7 3.5 5.8 10.0 7.1 6.2 5.7 5.1 4.6 4.4 4.0 3.9 3.7 3 5 2 3 4 . . 5 .. .. 3 5 6 3.5 3 7 7 8 3.7 3 5 9 10 4 11 4.0 4 6 12 13 12.0 16 1 14 15 15 9 16 14.0 11.1 8 8 17 18 19 7.5 6.5 5 4 20 2.9 2.85 2.45 2.25 3.1 3.6 2.9 2.5 2.4 2.5 2.4 2.3 21 22 5 4 23 . . 5.4 24 25 26 . . .... 27 28 29 30 4 5 31 Gage heights Dec. 8-11, Dec. 20-31 were affected by ice conditions. -4 S W 50 Embarras River. Daili/ Gage Height in Feet of Embarras River at St. Marie, III., for 1909 and 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 5.9 5.5 6.0 6.8 6.1 5.7 5.4 5.0 4.9 4.9 4.7 4.5 4.3 5.5 5.0 5.0 4.7 4.9 4.9 4.9 5.2 6.5 7.4 7.1 6.5 5.6 15.7 18.1 .8.7 18.3 17.7 17.2 15.9 14.2 12.4 10.5 9.2 8.4 7.6 7.1 6.7 6.4 6.1 5.8 5.5 5.4 5.2 5.1 5.0 4.9 4.7 4.6 4.5 4.5 4.3 4.2 4.2 4.1 4.0 4.0 4.1 3.9 3.9 3.9 3.9 3.8 3.7 3.6 3.5 3.4 3.4 3.3 3.3 3.3 6.2 10.3 9.1 6.7 6.3 5.4 5.5 4.9 4.8 4.5 4.3 4.8 4.9 4.5 4.4 4.4 4.3 6.0 13.2 10.0 eii 7.1 9.1 8.1 7.5 11.1 11.4 8.8 7.9 7.0 6.5 6.0 5.7 5.4 5.2 5.1 7.5 12.0 9.3 8.9 8.2 9.1 7.3 7.2 5.9 5 2 2 5 6 3 5 2 4 5 5 4 8 6 4 7 4 5 8 4 3 9 4 2 10 4 1 11 4 12 3 7 13 7.2 14.0 16.0 16.0 15.1 15.3 15.9 17.4 17.1 15.3 12.9 10.3 8.7 7.8 7.5 7.4 6.9 6.4 6.1 3 5 14 ... 3 6 15 3 6 16 .... 3 2 17 3 2 18 3 1 19 3 1 20 3 21 2 9 22 2 8 23 2 9 24 2 7 25 2 6 26 2 9 27 4 28 4 3 29 7 30 5 4 31 Gage heights Jan. 1-16 were affected by ice conditions. Gage heights Tan. 13, 14, 15 and 16 are to top of ice. 51 Embaeeas River. Daily Discharge of Embarras River at St. Marie, III., for 1909 and 1910. 1909. Day. Oct. Nov. Dec. 1 113 113 119 113 113 108 110 110 110 113 113 113 113 113 119 119 153 457 267 188 306 267 828 2310 1240 952 798 627 503 457 367 2 346 3 306 4 267 5... . - . .. 267 6 267 7 306 8 250 9 250 10. . . .. 250 11 250 12 503 13 3110 14 4790 15. 4710 16 3930 17 2740 18 . 1860 19 1380 20.. 176 170 130 116 201 286 176 134 126 134 126 119 800 21 500 22 400 23. . . .. 400 24 400 25 400 26 . . 350 27 350 28 350 29 . . 3.50 30 350 31 350 1894 11165 31149 Discharge Dec. 8-11, 20-31 was estimated from gage heights, climatological and other data. 52 Embarkas Eiver. Daily Discharge of Emharras Eiver at St. Marie, III, for 1909 and 1910. 9.. 10.. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 1910. Day. Total. JaB. 400 400 400 500 500 500 500 500 400 400 400 800 1000 3500 4500 4500 4380 4460 4710 5320 5200 4460 3480 2430 1820 1490 1380 1340 1170 1010 921 62771 Feb. 859 739 890 1140 9"21 798 710 600 575 575 527 480 434 739 600 600 527 575 575 575 654 1040 1340 1240 1040 768 4630 5610 Mar. 29761 5860 5690 5450 5240 4710 4010 3270 2500 2010 1710 1410 1240 1110 1010 921 828 739 710 654 627 600 575 527 503 480 480 434 411 411 389 367 5487 Apr. 367 389 346 346 346 346 326 306 286 267 249 249 232 232 232 952 2430 1970 1110 983 710 739 575 551 480 434 551 575 480 457 17516 May. 457 434 890 3600 2310 1240 921 1240 1970 1600 1380 2740 2860 1860 1520 1200 1040 890 798 710 656 627 1380 3110 2040 1890 1630 1970 1300 1270 859 June. 46390 654 768 654 600 551 527 480 434 411 389 367 306 267 286 286 218 216 201 201 188 176 164 176 153 143 176 367 434 1200 710 11701 Discharge Jan. 1-16 was estimated from the gage readings and from climatological and other data. 53 Embakras Eiver. Eatifi-g Table for Emlarras River at St. Marie, III., for 1909 and 1910. Gage Dis- height— charge- Feet. Sec. ft. Gage Dis- height— charge- Feet. Sec. ft. Gage Dis- height— charge- Feet. Sec. ft. Gage Dis- height— charge- Feet. Sec. ft. 2.00 103 2.10 108 2.20 113 2.30 119 2.40 126 2.50 134 2.60 143 2.70 153 2.80 164 2.90 176 3.00 188 3.10 201 3.20 216 3.30 2,32 3.40 249 3.50 267 3.60 286 3.70 306 3.80 326 3.90 346 4.00 367 4.10 389 4.20 411 4.30 434 4.40 457 4.50 480 4.60 503 4.70 527 4.80 ■-... 551 4.90 575 5.00 600 5.10 627 5.20 654 5.30 682 5.40 710 5.50 739 5.60 768 5.70 798 5.80 828 5.90 859 6.00 890 6.10 921 6.20 952 6.30 983 6.40 1014 6.50 1045 6.60 1076 6.70 1107 6.80 1138 6.90 1169 7.00 1200 7.10 1235 7.20 1270 7.30 1305 7.40 1341 7.50 1377 7.60 1413 7.70 1449 7.80 I486 7.90 1523 8.00 1560 8.10 1597 8.20 1634 8.30 1671 8.40 1708 8.50 1745 8.60 1782 8.70 1819 8.80 1856 8.90 1893 9.00 1930 9.10 1968 9.20 2006 9.30 2044 9.40 2082 9.50 2120 9.60 2158 9.70 2196 9.80 2234 9.90 2272 10.00 2310 10.10 2349 10.20 2388 10.30 2427 10.40 2466 10.50 2505 10.60 2544 10.70 2583 10.80 2622 10.90 2661 11.00 2700 11.10 2741 11.20 2782 11.3(3 2823 11.40 2864 11.50 2905 11.60 2946 11.70 2987 11.80 3028 11.90 : 3069 12.00 3110 12.10 3151 12.20 3192 12.30 3233 12.40 3274 12.50 3315 12.60 3356 12.70 3397 12.80 3438 12.90 3479 13.00 3520 13.10 3561 13.20 3602 13.30 3643 13.40 3684 13.50 3725 13.60 3766 13.70 3807 13.80 3848 13.90 3889 14.00 3930 14.10 3971 14.20 4012 14.30 4053 14.40 4094 14.50 4135 14.60 4176 14.70 4217 14.80 4258 14.90 4299 15.00 4340 15.10 4381 15.20 4422 15.30 4463 15.40 4504 15.50 4545 15.60 4586 15.70 4627 15.80 4668 15.90 4709 16.00 4750 16.10 4791 16.20 4832 16.30 4873 16.40 4914 16.50 4955 16.60 4996 16.70 5037 16.80 5078 16.90 5119 17.00 5160 17.10 5201 17.20 5242 17.30 5283 17.40 5324 17.50 5365 17.60 5406 17.70 5447 17.80 5488 17.90 5529 18.00 5570 18.10 5611 18.20 5652 18.30 5693 18.40 5734 18.50 5775 18.60 5816 18.70 5857 18.80 5898 18.90 5939 19.00 5980 Note— The above table is not applicable for ice or obstructed channel conditions. It is based on 11 discharge measurements made during 1909 and 1910. Above gage height 12 feet the rating curve is a tangent, the difference being 41 per tenth. 54 Embarkas Kiver. Monthly Discharge of Embarras River at St. Marie, III, for 1909 and 1910. (Drainage area 1, 540 square miles.) Month. October 20-31. November . . . December The year. . 1910 January February March April May June Discharge in Second-feet. Maximum. Minimum, j Mean. 286 23ia 5610 5860 2430 3600 1200 116 108 434 367 232 434 143 158 372 1000 2020 1060 1770 584 1500 390 Run-off. Second-feet per square mile. 0.103 .242 .649 1.31 .15 .379 .974 .253 Depth in inches. 1.51 .72 1.33 .42 1.12 .28 Accvu-acy. 65 KASKASKIA RIVEE. Description. This river is also called the Okaw. The drainage area of this stream lies wholly within the State of Illinois. It rises in the center of Cham- paign county, flows in a southwestward direction ^and empties into the Mississippi river in Randolph county near the city of Chester, 111. It is abont 190 miles in length, not following the bends. The river is very crooked and its total lengih is not far from 400 miles. The total drainage area is 5,840 square miles. There are but few tributaries of any size; the most important are Shoal creek and Silver creek, which are tributary from the north at the lower part of the river. The drainage basin is long and comparatively narrow, the average width is about thirty miles, maximum width about sixty miles. The ground is low, level or undulating, and in consequence the slope of the river is small. The sources of the river are about 740 feet and its mouth about 350 feet above sea level. The soil is mostly black loam. In the lower portion of the drainage area the soil gradually changes to a yellowish-brown clay. Within twenty miles above Shelbyville occurs the only rock of any extent along this stream. In this fifteen or twenty- mile section the banks and bed are largely of limestone or sandstone, elsewhere the banks and bed are mostly soft soil with some gravel. There are no forested areas in this drainge basin; the annual rainfall is about forty inches. In general, the winter conditions are mild. Opportunities for storage have not been investigated to any extent, although it is a subject of considerable importance. There are no oppor- tunities for water power development of any importance anywhere along the river. Owing to the lowness of the drainage area there is little opportunity for ground-water storage. During wet weather the ground- water plane rises to the surface of the ground and the rains run off into the streams very quickly, producing very sudden rises and floods. During dry weather, since there is little or no ground-water stored, the flow of the stream becomes very small and in some places dries up entirely. The banks of the river are low and in times of floods large areas are covered with water, delaying the planting of crops and some- times destroying growing crops. Storage possibilities, land drainage and flood control are matters of considerable importance in this basin. 56 The following gaging stations have been established and maintained in this drainage basin : Kaskaskia river near Areola, 1908, 1909, 1910. Kaskaskia at Shelbvville, 1908, 1909, 1910. Kaskaskia at Vandalia, 1908, 1909, 1910. Kaskaskia at Carlvle, 1908, 1909, 1910. Kaskaskia at Xew Athens, 1909, 1910. Shoal creek near Breese, 1909, 1910. Silver creek near Lebanon, 1908, 1909, 1910. Kaskaskia Eiver near Akcola, III. This station is located at the highway bridge known as the Bagdad bridge, about four miles west of Areola, 111. It was established April 11, 1908, for the purpose of obtaining data for use in studying drainage, flood protection, and storage problems, and also to obtain general statis- tical and comparative data. Lake Fork is tributary from the west about three or four miles above the gaging station. The drainage area above the station is about 390 square miles. The datum of the gage has remained unchanged since its installation, and the records are accurate and reliable. The river at this point is said to go dry at times and .was dry for about two months in 1908. The highwater of May, 1908, reached a height of 17.3 feet on the gage. Kaskaskia Eiver. Vischargc Measurements of Kaslcaskia River near Areola, III. 1908 to 1910. Date. April July 1909 March May November 1910 March March March May May May May Hydrographer. R.J. Taylor. R.J. Taylor. 22 Wm. M. O'Neill 21 !H. J.Jackson... 23111. J. Jackson... 71 M. E. McChristie. lOlM. E. McChristie. IO'M. E. McChristie. i;i il. J. Jackson 25 H.J. Jackson 27 U. J.Jackson 28'H. J. Jack.son Width- Feet. 226.5 68.5 96 103 107 205 124 124 205 228 220 210 Area of section— Sq. ft. Mean velocity —Ft. per Gage height- Feet. Dis- charge- Sec, ft. 11 SI 1.06 10.0 75 0.58 2.75 234 0.78 4.58 30H 0.81 5.32 337 0.76 5.65 734 0.86 7.78 441 0.S9 6.40 442 0.90 6.37 686 0.90 7.82 1230 1.12 10.29 1020 0.95 9.43 778 0.87 8.28 1254 44 1S2 248 255 635 392 396 619 1380 965 678 57 Kaskaskia Eiver. Daily Gage Height in Feet of Kaskaskia Eiver near Areola, III., for 1908 to 1910. 1908. Day. Apr. May. June. July. Aug. Sept. Oct Nov. Dec. 2 3 4 5 6 8 9 10 11 8 5 12 .. *8 1 13 14 7 3 15 7 16 6 7 17.. - - 6 3 18 6 1 19 *6 20 5 9 21 5 6 22.. 5.4 5 3 23 24 6 4 25 8 2 26 *9 27. 9 8 28 9 9 29 10 30... 9 4 31 8.7 8.2 *8.1 8.0 12.0 13.2 16 17 16 *15 14 13 12 11 11 11 *10 10.0 9.7 9.3 *9.0 7.3 7.0 5.8 5.7 5.5 5.7 5.6 5.4 *5.3 5.2 5.4 5.5 5.4 5.3 5.2 *5.0 4.8 4.7 4.6 4.4 4.3 4.3 *4.2 4.1 4.0 3.9 3.8 3.7 3.5 *3.4 3.3 3.3 3.1 3.0 3.0 3.4 *3.3 3.2 3.6 3.4 3.2 3.0 2.9 *2.8 2.7 2.7 2.6 3.6 3.4 3.4 *3.4 3.5 3.5 3.4 3.3 3.0 2.9 *2.8 2.8 2.8 2.7 2.7 2.7 Gage height obtained by interpolation. 68 Kaskaskia River. Daily Gage Height in Feet of Kaslcashia River near Areola, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. J 1.4 11.0 4.0 7.6 9.8 4.8 *3.75 2.7 1.7 3.6 4.8 2 1.4 10.9 4.0 *7.6 8.7 4.6 3.6 2.6 1.6 3.6 4.6 3 1.6 10.1 3.9 7.5 8.2 4.5 3.4 2.5 *1.6 3.4 4.5 4 2.0 9.8 *3.9 7.5 7.6 *4.7 4.3 2.3 1.6 3.2 4.2 5 3.6 9.4 3.9 7.4 8.6 *4.9 3.2 *2.25 1.6 3.1 *4.15 6 3.4 8.9 7.7 7.3 *8.4 5.1 3.1 *2.15 1.6 3.0 4.1 7 *5.6 *8.0 11.7 7.2 8.2 7.0 2.9 2.1 1.5 *2.95 4.1 8 5.7 7.1 11.4 7.1 7.5 8.4 *2.75 2.0 1.5 2.9 3.9 9 D 6.1 9.2 11.0 *8.2 7.2 9.2 2.6 1.9 1.5 2.9 3.9 10 6.4 8.6 10.8 9.4 7.8 9.4 2.5 1.8 *1.5 2.8 3.8 11 R 6.6 7.4 *10.6 10.0 7.4 *8.55 2.4 1.8 1.5 2.8 3.7 12 6.4 6.5 10.4 9.6 6.2 7.7 2.3 *1.75 1.4 2.8 *4.4 13 Y 6.0 6.1 13.2 8.9 *6.3 10.4 2.3 1.7 1.4 2.9 5.1 14 *6.2 *6.0 15.0 8.3 6.4 14.1 2.2 1.7 1.4 *3.75 6.2 15 6.5 6.0 14.1 7.5 6.0 15.4 *2.15 1.6 1.4 4.6 8.1 16 6.9 5.9 13.4 *7.0 5.5 15.7 2.1 1.6 1.4 4.9 8.3 17 7.1 5.8 12.2 6.5 5.4 13.2 2.1 1.6 *1.9 5.9 8.1 18 7.7 5.8 *1].8 6.1 5.2 *11.8 2.0 1.5 2.4 7.2 8.0 19 8.4 5.7 11.4 5.8 4.9 10.4 2.0 *1.45 2.6 7.1 *7.95 20 9.1 5.2 11.6 5.7 *4.8 9.2 1.9 1.4 2.6 6.9 7.9 21 *9.6 *5.1 11.9 5.3 4.8 8.0 1.9 1.4 2.5 *6.55 7.8 22 10.0 5.0 12.2 5.2 4.7 7.1 *1.8 1.9 2.5 6.2 7.8 23 10.0 4.9 12.4 *5.1 5.0 7.0 1 .7 2.3. 3.0 5.7 7.7 24 11.1 4.7 11.2 5.0 5.6 6.8 1.7 2.2 *3.5 5.8 7.6 25 0.8 14.4 4.5 *10.6 5.3 4.9 *6.45 1.6 2.1 4.0 5.6 7.5 26 0.8 13.6 4.5 10.1 6.1 4.7 6.1 1.9 *2.05 3.9 5.4 *7.35 27 0.9 12.2 4.4 9.4 8.0 *4.4 5.8 3.2 2.0 3.9. 5.2 7.2 28 0.9 *11.6 *4.3 8.8 12.9 4.2 5.2 3.1 1.9 3.8 *5.15 7.2 29 1.0 4.2 8.1 *12.0 4.2 4.5 *2.95 1.8 3.7 5.1 7.1 30 1.0 4.1 7.8 11.1 4.0 4.1 2.8 1.7 3.7 5.0 7.0 31 *1.2 4.0 10.2 3.9 2.8 *3.65 6.9 • The gage was not read on Sundays; the gage heights on the missing days were obtained by interpo. tion. Gace heights Dec. 19-31 were affected by ice conditions. Gage heights Dec. 22-31 are to top of ice 59 Kaskaskia Eiver. Daily Gage Height in Feet of Kaskashia River near Areola, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. 1 May. 1 June. July. Aug. Sept. Oct. Nov. Dec. 1 *6.5 *6.1 5.7 5.8 5.9 6.2 6.2 6.2 *6.15 6.1 7.1 7.9 8.2 8.4 8.8 *9.3 9.8 11.3 12.0 11.9 11.8 11.6 *10.5 9.4 9.0 8.5 7.5 7.0 6.8 *6.65 6.5 6.5 6.4 6.2 6.2 6.0 *5.9 5.8 5.6 5.6 5.7 5.4 5.4 *5.1 4.8 . 4.8 4.8 4.9 4.9 4.9 *4.9 4.9 *4.9 4.9 4.9 4.3 4.0 *6.5 9.0 9.7 9.4 8.9 8.7 8.4 *8.1 7.8' 7.4 7.1 6.5 6.1 6.0 *5.85 5.7 5.7. 5.6 5.4 5.2 5.0 *4.9 4.8 4.8 4.7 4.6 4.5 4.5 *4.4 4.3 4.1 4.0 3.9 3.8 3.8 *3.8 3.8 3.8 3.7 3.7 3.7 3.6 *3.55 3.5 3.5 3.4 3.4 3.4 3.6 *3.7 3.8 3.9 4.1 4.2 4.1 4.0 4.2 4.4 5.2 5.0 4.9 4.8 4.5 *4.6 4.65 5.2 5.55 5.6 5.65 5.7 *6.0 • 6.3 6.45 7.1 7.55 8.0 8.2 *7.1 6.0 5.8 5.6 5.4 5.2 5.3 *6.15 7.0 8.9 10.2 10.1 9.4 8.5 7.8 7.3 7.1 6.8 6.1 5.7 5.4 5.2 5.1 4.8 4.5 4.4 4 3 o ■ 3 4 5 6 7 8 9 10 11 4.2 12 4.0 3.8 3.7 3.5 3.4 3.4 3.2 3.0 2.9 2.9 2.9 2.8 2.7 2.6 2.5 2.7 5.4 7.6 7.8 13 14 15 16 17 18 19 20 21 22 23 24 ■ ■ ■ 25 26 27 28 29 30 31 * Gage height obtained by interpolation. Gage heights Jan. 1 and 10 were affected by ice conditions and no estimates of the discharges were made. 60 Kaskaskia Eiver. Daily Discharge of Kashaskici Eiver near Areola, 111., for 1908 to 1910. 1908. Pay. AP. May. June. July. Aug. Sept. Oct. Nov. Dec. 850 714 690 665 1960 2430 3470 3870 3650 3290 2930 2500 2280 1920 1820 1740 1450 1160 1130 1190 1260 1160 1030 926 822 689 598 518 465 448 432 48057 298 287 265 287 276 254 244 234 254 265 254 244 234 215 196 187 178 162 154 154 146 138 130 122 114 106 91 84 77 77 5727 61 58 58 84 77 70 98 84 70 58 53 48 43 43 38 98 84 84 88 91 91 84 77 58 53 50 48 48 43 43 43 2029 38 34 29 21 IS 18 15 15 14 12 12 12 10 10 10 8 6 6 6 5 5 5 4 3 3 2 2 1 5 ' c 7 Q , 1 1 794 696 598 518 465 416 358 332 320 309 276 254 244 372 714 952 1190 12.30 1260 1070 1'i 1 7 19 oi ot on 07 28 29 on 1.0 .8 .7 327 12368 Total There was no flow from Sept. 1 to Dec. 31. Gl Kaskaskia River. Daily Discliar ge of Kashashia River near Areola, III., for 1908 to 1010. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 2 3 4 5 6 7 8 9 10 1] 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 "q.I' .5 .7 .7 1.0 1.0 2.5 4 4 6 15 98 254 270 287 332 372 401 372 320 353 386 . 448 482 598 767 971 1120 1260 1260 1640 2820 2540 2030 1820 1600 1560 1290 1190 1070 909 696 482 1000 822 537 386 332 326 320 309 298 298 287- 234 224 214 205 187 170 170 162 154 146 138 130 130 130 122 122 122 598 1850 1740 1600 1530 1460 1390 2390 3040 2720 2460 2030 1880 1740 1820 1920 2030 2100 1670 1480 1290 1070 879 689 620 577 567 557 557 537 518 500 482 776 1070 1260 1130 909 740 557 472 386 332 298 287 244 234 224 214 244 332 665 2280 1960 1640 1330 1190 850 714 577 822 768 714 557 500 620 537 345 358 372 320 265 254 234 205 200 196 187 214 276 205 187 166 146 146 130 196 178 170 188 206 224 465 767 1000 1070 834 598 1390 2720 3180 3290 2390 1890 1390 1000 665 482 465 432 382 332 298 234 170 138 122 110 98 84 84 70 64 53 46 38 33 29 25 25 21 20 18 18 15 15 12 12 11 10 10 6 12 70 64 56 48 48 43 38 33 25 23 20 18 15 12 10 10 9 8 8 ■ 6 6 6 5 4.5 4 4 12 25 21 18 16 15 12 10 8 8 6 6 6 6 6 5 5 5 5 5 16 29 38 38 33 33 58 94 130 122 122 114 106 106 102 98 98 84 70 64 58 56 53 53 48 48 48 53 116 178 205 309 500 482 448 396 345 287 298 276 254 234 229 224 214 196 178 170 146 142 138 138 122 122 114 106 165 224 345 689 740 689 665 550 500 450 400 350 300 250 200 170 150 130 100 100 Total. 6.9 21230 15846 42622 21879 12255 26866 1225 444.5 1224 5826 8739 Year period, 158163.4; discharge Dec. 19 to Dec. 31 was estimated from the gage readings and from elimatological and other data. There was no discharge from Jan. 1-24. 62 Kaskaskia Eivee. Daily Discharge of Kaskaskia River near Areola, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 386 372 345 345 320 309 298 276 276 287 254 254 224 196 196 196 205 205 205 205 205 205 205 205 154 130 386 940 1160 1070 9C9 850 767 689 620 537 482 386 332 320 304 287 287 276 254 234 214 205 196 196 187 178 170 170 162 154 138 130 122 114 114 114 114 114 106 106 106 98 94 91 91 84 84 84 98 106 114 122 138 146 138 130 146 162 234 214 205 196 170 178 182 234 270 276 282 287 320 358 379 482 567 665 714 482 320 298 276 254 234 244 338 465 909 1330 1290 1070 794 620 518 482 432 2 332 3 287 4 , 254 5 234 6 224 7 196 8 . .. 170 9 162 10 ... 154 11 482 642 714 767 879 1030 1190 1710 1960 1920 1890 1820 14.30 1070 940 794 557 465 432 408 386 146 12 130 13 114 14 106 15 91 16 84 17- 84 18 70 19 58 20 53 21 53 22 53 23... 48 24 43 25.. . 38 26 33 27.. 43 28 254 29... 577 30 . 620 31 Total 21486 7784 11986 3833 15118 5143 G3 ^ Kaskaskia Eiver. Rating Table fo7' Kashaslcia River near Areola, III. 1909 to 1910. Gage height— Flet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge — Sec. ft. 00 3 20 70 6.40 6.50 6 60 372 386 401 9.60 9.70 9.80 9.90 10.00 10.10 10.20 10.30 10.40 10.50 10.60 10.70 10.80 10.90 11.00 11.10 11.20 11.30 11.40 11.50 11.60 11.70 11.80 11.90 12 00 1130 10 3 30 . . . . 77 1162 20 .... 3 40 84 1194 30 3 50 91 6.70 6.80 6.90 7.00 7.10 7.20 7.30. 7.40 7.50 7 60 416 432 448 465 482 500 518 537 557 577 1227 40 3 60. 98 1260 50 3.70 3.80 3.90 4.00 4.10 4.20 4.30 4.40 4.50 4 60. . 106 114 122 130 138 146 154 162 170 .... 178 1293 60 1 1326 0.70 80 3 5 1360 1394 0.90 1.00 : 1.10 1 20 7 1.0 1.5 2.0 3 1428 1462 1496 1530 1 30 7 70 598 1565 1 40 4 5 6 7.80.. 7 90 620 642 1600 1 50. . . - 4.70 4.80 4.90 5.00 5.10 5.20 5.30 5.40 5.50 5.60 5.70 5.80 5.90-. 6.00 6.10 6.20 6.30 187 196 205 214 224 234 244 254 265 276 287 298 309 320 332 345 358 1636 1 60 8.00 8.10 8.20 8 30 . 665 689 714 . . 740 1672 1.70 1.80 1 90 8 10 12 15 1708 1744 1780 2 00 8.40 8.50 8.60 8.70 8.80 8 90 767 794 822 850 879 909 1816 2 10 18 1852 2 20 ... 21 1888 2 30 25 1924 2 40 29 1960 2 50 .. -. 33 13.00 14.00 15.00 16.00 17.00 18.00 2320 2 60 38 9.00 9.10 9.20 9.30 9.40 9.50 940 971 :. 1002 1034 1066 1098 2600 2 70 ... 43 3040 2 80 48 3400 2 90 53 3760 3.00 3.10 58 64 4120 The above table is not applicable for ice or obstructed channel conditions. It is based on 12 discharge measurements made during 1908-1910, and is well defined between gage heights 2.7 feet and 10.0 feet. Above gage height 11.0 feet the rating curve is a tangent, the difference being 36 per tenth. 64 Kaskaskia Eivee. Monthly Discharge of Kaskaskia River near Areola, III., for 190S to 1910. (Drainage area 390 square miles.) Month. Discharge in Second-feet. Maximum. Minimum. Mean. Run-off. Second-feet per square mile. Depth Accuracy, m mches. 1908 April 11-31 - . . May June July August September... October November December . . . 1909 January 1-31 . . February March April May June July August September... October November December The year. 1910 January 11-31 . February March April May June 1260 3870 298 98 38 2. 2820 1600 3040 2280 1190 3290 110 43 130 500 740 3290 1960 940 1170 234 1330 620 244 432 38 o' 4 130 122 214 130 122 6 4 4 48 130 122 84 178 33 618 1550 191 65. 10. 758 511 1420 706 408 867 39.5 14.8 39.5 194 282 437 1023 278 387 128 488 171 1.58 3.97 .490 .168 .C27 .00056 1.94 1.31 3.64 1.81 1.05 2.22 .101 .038 .101 .497 .723 1.12 2.62 .713 .992 .328 1.25 .438 1.18 4.58 .55 .19 .03 .0006 2.02 1.51 4.06 2.C9 1.17 2.56 .12 .04 .12 .55 .83 15.08 2.05 .74 1.14 .37 1.44 .49 65 Kaskaskia Kiver at Shelbyville, III. This station is located at the highway bridge at the edge of Shelbyville, just above the C. & E. I. and Big Four Railroad bridges and just below the pumping station of the City Water Company of Shelbyville. It was established Feb. 25, 1908, for the purpose of collecting data for use in studying drainage and flood control problems, and to obtain general statistical and comparative data. There are no tributaries of any size entering the stream near Shelby- ville. The drainage area above the gaging station is about 1,030 square miles. The datum of the gage has remained unchanged since its installation. The gage heights may be affected during high water by backwater caused by the lodging of drift at the two railroad bridges below the gaging station. The records are accurate and reliable. Kaskaskia Eiver. Discharge Measurements of KasJcashia River at Shelbyville, III., for 1908 to 1910. Date. Hydrographer. 1908 February April June July 1909 February February March May May December 1910 March May May 24 Width- Feet. Area of section— Sq. ft. Mean velocity —Ft. per R.J. Taylor R.J. Taylor R.J. Taylor R.J. Taylor R.J.Taylor R.J.Taylor Wm. M. O'Neill. H. J. Jackson H. J. Jackson H.J.Jackson — M. E. McChristie H. J.Jackson H. J.Jackson 147 975 149 1023 113 1009 1035 713 105 788 108 852 110 560 151 995 124 892 102 224 110 443 123 770 141 866 2.41 2.66 1.07 0.30 0.51 0.67 1.36 2.14 2.14 0.96 1.80 2.29 2.38 Gage height- Feet. Dis- charge- Sec, ft. 11.53 12.2 8.7 6.3 6.85 7.32 8.00 11.48 10.76 *6.40 7.94 10.47 11.27 2353 2720 1084 218 402 572 761 2134 1906 216 797 1760 2060 47 per cent of discharge under ice cover. -5 S W 66 Kaskaskia Eiver. Daily Gaqe Heiqlit in Feet of Kaslcaskid Eiver at Slielbymlle, III., for ^ ^ 1908 to 1910. 1908. Day. Jan. Feb. Mar. 1 2 15.1 15.5 16.4 16.0 15.6 15.4 15.8 16.2 16.6 17.0 16.8 15.8 14.8 14.2 13.6 13.1 11.9 10.9 10.0 10.1 9.7 9.6 9.5 9.4 9.3 9.0 8.7 8.5 8.9 8.9 8.7 3 5 6 7 g 9 10 11 12 13 15 .... 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 14.2 16.4 17.0 16.6 15.3 31 Apr. May. June. July Aug. Sept. 11.6 12.8 11.8 11.4 9.5 11.5 11.7 11.8 11.5 11.3 11.1 11.0 10.1 9.6 8.9 8.8 8.7 8.6 8.5 8.4 8.3 10.1 10.6 11.2 11.8 12.2 12.4 11.9 11.8 11.4 10.4 21.2 22.8 22.3 22.7 25.8 23.6 21.2 20.2 19.5 18.8 17.9 17.0 16.4 15.9 15.0 14.9 13.7 12.8 13.7 13.1 12.6 12.0 11.5 11.3 10.0 9.8 9.4 9.0 8.4 8.3 8.8 8.4 8.1 7.8 7.6 8.0 8.4 8.3 7.9 7.6 7.5 7.3 7.0 6.9 6.7 6.6 6.8 6.7 6.7 6.6 6.5 6.5 6.4 6.3 6.1 6.2 6.3 6.4 6.3 6.4 6.3 6.3 6.4 6.7 6.8 6.9 6.6 6.5 6.5 6.3 6.2 6.0 6.0 5.9 5.8 6.1 6.1 6.1 6.0 6.0 5.9 5.8 5.8 5.7 6.7 5.6 5.7 5.8 6.8 6.7 5.7 5.6 5.6 5.5 5.5 5.6 5.6 5.7 5.7 5.6 5.7 5.6 5.6 5.5 5.5 5.5 5.4 5.4 5.4 5.3 5.3 5.3 5.3 5.3 6.3 5.2 5.2 5.3 5.3 Oct. 5.4 6.3 6.3 5.2 6.2 6.2 6.2 6.2 5.1 6.1 5.0 5.0 5.0 5.0 5.0 5.0 5.1 6.1 5.1 6.1 5.1 5.0 5.0 5.0 6.0 6.0 6.0 5.1 6.2 6.3 Nov. Dec. 6.3 5.2 5.2 5.2 5.1 6.1 6.1 5.1 5.1 5.1 5.1 6.1 5.1 6.1 5.0 5.0 5.0 5.0 6.0 6.0 5.0 5.0 4.9 4.9 4.9 6.0 5.0 5.0 4.9 4.9 4.9 4.9 6.0 6.0 6.1 5.1 5.2 5.2 6.2 5.2 6.2 6.2 6.2 5.2 5.2 5.2 5.3 5.3 5.3 5.3 5.3 6.3 6.4 6.4 5.5 5.5 5.6 5.6 5.5 5.5 5.5 5.4 5.4 6.4 5.3 6.3 5.3 5.3 5.3 5.3 5.4 6.4 6.4 5.4 5.4 5.4 5.4 6.3 5.3 5.3 5.3 6.3 6.3 6.3 6.3 6.2 5.2 5.2 5.3 6.3 5.4 5.4 67 Kaskaskia Eiver. Daily Gage Height in Feet of Kaskaskia Eiver at SheTbyville, III., for 190S to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 5.4 5.7 12.8 6.8 13.3 14.9 6.9 6.7 6.4 5.2 5.9 6.8 2 5.4 5.8 12.0 6.8 10.5 14.3 6.5 6.6 5.4 5.2 5.8 6.7 3 5.4 5.8 11.0 6.7 10.4 14.2 6.5 6.4 5.4 5.2 5.8 6.7 4 5.4 5.9 10.3 6.7 10.4 13.5 6.4 6.3 6.4 5.2 5.7 6.6 5 5.4 6.1 9.7 6.7 10.3 12.5 11.1 6.2 5.3 5.2 6.7 6.6 6 5.4 6.2 9.3 15.9 9.9 11.9 12.2 6.0 5.3 5.1 5.7 6.5 7 5.4 6.6 9.4 15.8 9.8 11.5 17.3 6.9 6.2 5.1 5.8 6.6 8 5.4 7.0 9.6 15.0 9.9 10.9 17.7 5.8 6.2 5.1 6.8 6.6 9 5.4 7.1 9.8 14.1 13.9 10.5 16.6 5.8 6.3 5.1 5.7 6.6 10 5.4 7.3 9.6 13.0 13.9 11.9 13.2 5.8 5.3 5.1 5.7 6.6 11 5.4 7.5 9.3 12.8 13.8 11.9 11.9 6.8 5.3 6.1 5.6 6.5 12 5.3 7.9 9.1 14.7 13.6 10.9 11.9 5.7 5.2 5.1 5.8 6.9 13 5.3 8.2 9.0 19.4 11.9 10.3 13.8 5.7 ■ 6.2 5.1 5.8 7.6 14 5.3 8.6 8.7 20.8 11.65 10.2 12.9 6.6 6.2 5.1 5.9 8.7 15 5.3 8.8 8.4 19.8 11.0 10.4 12.5 6.5 5.2 6.1 5.9 9.7 16 5.3 9.0 8.1 18.9 10.1 9.8 11.9 6.4 6.2 5.1 6.9 9.9 17 5.3 9.7 8.6 18.0 9.3 10.6 12.6 6.4 6.2 5.1 6.8 9.8 18 5.3 11.0 7.8 17.3 8.9 9.6 13.7 5.3 6.2 6.3 7.6 9.6 19 5.4 12.1 7.7 16.3 8.6 8.9 13.9 5.3 5.2 5.6 7.6 8.9 20 5.5 13.2 7.6 14.8 8.2 7.9 13.3 5.3 6.2 5.7 7.6 9.2 21 6.6 13.5 7.5 17.5 7.2 7.5 11.9 5.3 5.2 5.7 7,8 9.1 22 5.7 13.6 7.3 18.9 7.7 7.4 11.7 5.2 5.2 6.6 8.4 8.9 23 5.8 13.7 7.1 19.8 7.6 7.4 10.5 5.0 5.2 6.0 8.3 8.8 24 5.8 14.2 7.3 17.3 7.4 7.2 9.6 5.1 5.6 6.0 8.2 8.7 25 5.8 14.3 7.4 17.2 7.7 7.2 7.6 5.1 6.6 6.0 8.1 8.2 26 5.7 14.3 7.5 16.8 9.4 7.8 7.7 5.3 5.4 6.0 7.7 8.1 27 5.7 13.9 7.4 15.7 11.2 7.7 7.5 5.2 5.3 6.0 7.5 7.9 28 5.7 13.3 7.1 13.9 11.0 7.6 7.2 5.2 6.3 6.0 7.3 7.9 29 5.7 7.1 13.8 11.2 7.3 6.9 5.4 6.3 6.0 7.1 7.6 30 5.7 7.0 12.0 12.6 7.2 6.8 5.4 6.3 6.0 6.9 7.6 31 5.7 6.9 14.2 6.7 5.5 6.9 7.6 Gage heights Jan. 6-18, 29-31, Feb. 1, Dec. 7-ii, Dec. 20-31, were affected by ice conditions. 68 Kaskaskia Eiver. Daily Gage Height in Feet of Kaskaskia Eiver at Shelhyville, III, for 1908 to 1910. 1910. (lage heights Jan. 1-11 were affected by ice conditions and discharges were not estimated. 69 Kaskaskia Eiver. Daily Discharge of Kashaskia Eiver at Slielbyville, III., for 1908 to 1910. 1908. Day. Jan. Feb. Mar. Apr. May. June. J uly. Aug. Sept. Oct. Nov. Dec. 1 4260 4480 4990 4760 4540 4420 4650 4870 5100 5330 5220 4650 4090 3760 3430 3160 2550 2050 1630 1680 1490 1450 1400 1360 1310 1190 1070 994 1150 1150 1070 2400 3000 2500 2300 1580 1450 1400 2350 2450 2500 2350 2250 2150 2100 1680 1450 1150 1110 1070 1030 994 956 918 1680 1910 2200 2500 2700 2800 2550 2500 2300 1810 7820 8780 8480 8720 10600 9260 7820 7220 6800 6480 5850 5330 4990 4700 4200 4140 3480 3000 3480 3160 2900 2600 2350 2250 1630 1540 1350 1190 1030 956 918 1110 956 846 738 666 810 956 918 774 666 630 562 460 426 358 324 392 3o8 358 324 290 290 256 224 160 192 224 256 224 256 224 224 256 358 392 426 324 290 290 224 192 130 130 109 90 160 160 160 130 130 109 90 90 73 73 58 73 90 90 73 73 58 58 45 45 45 58 73 73 58 73 58 • 68 45 45 45 34 34 34 25 25 25 25 25 25 18 18 25 25 34 25 25 18 18 18 18 18 13 13 10 10 10 10 10 10 13 13 IS 13 13 10 10 10 10 10 10 13 18 25 25 18 18 18 13 13 13 13 13 13 13 13 13 13 10 10 10 10 10 10 10 10 8 8 8 10 10 10 8 8 8 8' 10 10 13 13 18 18 18 18 18 18 18 18 18 18 25 25 25 25 25 26 34 34 45 45 58 58 45 45 45 34 2 34 3 34 4 25 25 6 25 7 25 8 25 9 25 10 34 11 34 12 34 13 34 14 34 15 34 16 34 17 25 18 25 19 25 20 25 21 25 22 25 23. 25 25 24 1 25 3760 4990 26 18 27 5330 5100 4370 18 28 25 29 25 30 34 34 31 Total. 23550 93254 57478 146740 , 17172 5791 1411 441 367 793 862 70 Kaskaskia Eiver. Daily Discharge of Kaskaskia River at Shelbyville, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov, Dec. 1 34 40 3000 392 3260 4140 426 358 34 18 109 392 2 34 90 2600 392 1860 3820 290 324 34 18 90 358 3 34 90 2100 358 1810 3760 290 256 34 18 90 358 4 34 109 1770 358 1810 3380 256 224 34 18 73 324 5 34 160 1490 358 1770 2850 2150 192 25 18 73 324 6 30 192 1310 4700 1580 2550 2700 130 25 13 73 290 30 324 1360 4650 1540 2350 5500 109 18 13 90 250 8 25 460 1450 4200 1580 2050 5740 90 18 13 90 230 9 25 494 1540 3700 3600 1860 5100 90 25 13 73 216 10 25 562 1440 3100 3600 2550 3210 90 25 13 73 200 11 20 630 1310 3000 3540 2550 2550 90 25 13 58 200 12 20 774 1230 4040 3430 2050 2550 73 18 13 90 426 13 20 882 1190 6740 2550 1770 3540 73 18 13 90 666 14 25 1030 1070 7580 2420 1720 3050 58 18 13 109 1070 15 25 1110 956 6980 2100 1810 2850 45 18 13 109 1490 16 25 1190 846 6540 1680 1540 2550 34 18 13 426 1580 17 25 1490 1030 5910 1310 1910 2900 34 18 13 392 1640 18 30 2100 738 5500 11.50 1450 3480 25 18 25 666 1450 19 34 2650 702 4930 1030 1150 3600 25 18 58 666 1150 20 45 3210 666 4090 882 774 3260 25 18 73 666 1000 21 58 3380 630 5620 528 630 2550 25 18 73 738 850 22 73 3430 562 6540 702 696 2450 IS 18 58 956 700 23 90 3480 494 6980 666 596 1860 13 18 1.30 918 600 24 90 3760 662 5500 596 628 1450 13 58 130 882 520 25 90 3820 596 5450 702 528 666 13 58 130 846 470 26 73 3820 630 5220 1360 738 702 25 34 130 702 400 27 73 3600 596 4590 2200 702 630 18 25 130 630 350 28 73 3260 494 3600 2100 666 528 18 25 130 562 300 29 60 494 3540 2200 562 426 34 25 130 494 2.50 .30 50 460 2600 2900 528 392 34 25 130 426 220 31 40 426 3760 358 45 109 1682 200 Total. 1344 46137 33742 127158 60216 52108 68004 2601 763 11260 18374 Year period 423389. Discharge Jan. 6-18, 2St^l, Feb. 1, Dec. 7-11, and Dec. 20-31 was estimated from the gage readings and from climatological and other data. 71 Kaskaskia River. Daily Discharge of Kaskaskia River at Shelby ville, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 774 702 738 702 702 666 630 666 596 562 528 460 324 426 426 426 358 290 358 324 494 460 460 392 358 358 2550 3380 3700 3160 3260 3380 3430 2400 2150 1810 1580 1360 1150 994 994 774 666 630 . 596 562 528 494 426 426 426 392 392 358 358 358 324 324 290 290 290 256 256 256 256 224 224 160 160 160 192 192 192 192 324 358 358 358 358 358 324 324 290 290 290 324 358 426 392 392 358 596 738 882 846 1230 1540 1580 1230 1860 2200 2150 1860 1680 1490 1270 1030 882 846 774 1070 3700 4310 4870 4650 3260 2850 2700 2300 1810 1450 2 1270 3 1110 4 994 5 994 6 846 7 702 8- . 1 596 9 562 10 494 11 494 12 738 1860 3160 3600 .3380 2900 4260 5330 6360 4540 3650 3380 2700 2200 1860 1490 1230 1110 994 882 426 13 . 392 14 324 15 '. 290 16 290 17 256 18. 256 19 256 20 224 21 160 22 109 23 . 109 24 109 25 109 26 109 27 256 28 392 29 494 30 666 31 Total 55624 19110 37692 8432 56954 1 47SQ 72 Kaskaskia EhtiR. Bating Table for Kaskaskia River at Shelbyville, III, for 1908 to 1910. Gage Dis- height— charge- Feet, ^ec. ft. Gage Dis- height— charge- Feet. Sec. ft. Gage Dis- height— charge- Feet. Sec. ft. 4.00. 4.10. 4.20. 4.30. 4.40. 4.50. 4.60. 4.70. 4.80. 4.90. 5.00. 5.10. 5.20. 5.30. 5.40. 5.50. 5.60. 5.70. 5.80. 5.90. 6.00. 6.10. 6.20. 6.30. 6.40. 6.50. 6.60. 6.70. 6.90.... 7.00.... 7.10.... 7.20.... 7.30.... 7.40.... 7.50.... 7.60.... 7.70... . 7.80.... 7.90.... 8.00.... 8.10.... 8.20.... 8.30.-.. 8.40.... 8.50.... 8.60.... 8.70.... 109 130 160 192 224 256 290 324 358 392 426 460 494 528 562 596 630 666 702 738 774 810 846 882 918 956 994 1032 1070 1110 8.90 1150 9.00 1190 9.10 1230 9.20 1272 9.30 1314 9.40 1358 9.50 1402 9.60 1446 9.70 1492 9.80 1538 9.90 1584 10.00 1630 10.10 1676 10.20 1722 10.30 1768 10.40 1814 10.50 I860 10.60 1908 10.70 1956 10.80 2004 10.90 2052 II 00 2100 11.10 2150 11.20 2200 11.30 2250 11.40 2300 11.50 2350 11.60 2400 11.70 2450 11.80 2500 11.90 2550 12.00 2600 12.10 2650 12.20 2700 12.30 2750 12.40 2800 12.50 2850 12.60 2900 12.70 2950 12.80 3000 12.90 3050 13.00 3100 13.10 3155 13.20 3210 13. .30 3265 13.40 : 3320 13.50 3375 13.60 3430 13.70 3485 80 3540 90 3595 00 3650 10 3705 20 3760 30 3815 40 3870 50 3925 60 3980 70 4035 80 4090 90 4145 00 4200 10 4256 20 4312 30 4368 40 4424 50 4480 60 4536 70 4592 80 4648 90 4704 00 4760 10 4817 20 4874 30 4931 40 4988 50 5045 60 5102 70 5159 80 5216 90 5273 00 5330 10 5388 20 5446 30 5504 40 5562 50 5620 60 5678 70 5736 80 5794 90 5852 00 5910 10 5969 20 6028 30 6187 40 6246 50 6305 Gage Dis- height— charge- Feet. Sec. ft. 18.60 6364 18.70 6423 18.80 6482 18.90 6544 19.00 6500 19.10 6560 19.20 6620 19.30 6680 19.40 6740 19.50 6800 19.60 6860 19.70 6920 19.80 6980 19.90 7040 20.00 7100 20.10 7160 20.20 7220 20.30 7280 20.40 7340 20.50 7400 20.60 7460 20.70 7520 20.80 7580 20.90 7640 21.00 7700 21.10 7760 21.20 7820 21.30 7880 21.40 7940 21.50 8000 21.60 8060 21.70 8120 21.80 8180 21.90 8240 22.00 8300 22.10 22.20 22.30 22.40 22.50 22.60 22.70 22.80 22.90 23.00 8900 24.00 9500 25.00 10100 26.00 10700 XoTK— The above lublo is not applicablo for ioo or obstniolod channel conditions. It is based on 13 discharge mea.surenienis ninde during 190S-1910, and is well defined between gage heights 6.3 feet and 12.2 feet Above gage height 19.0 feet the rating curve is a tangent, Ihc dilTcrence being 60 per tenth. 73 Kaskaskia Eiyer. Monthly Discharge of Kaslcaskia River at Shelbyville, III., for 1908 to 1910. ( Drainage area 1 ,030 square miles. ) Month. Discharge in Second-feet. Maximum. Minimum Mean. Run-ofT. Second-feet per square mile. Depth in inches. Accuracy. 1908 January February 25-29. March April May June July August September October November December The year.. 1909 January February March AprU May June July August September October November December The year.. 1910 January 12-31 . February Maich April.......'... May June 5330 5330 3000 10600 1110 426 90 34 25 58 34 3820 3000 7580 3760 4140 5740 358 58 130 956 1580 7580 6360 3380 3700 426 4870 1450 3760 994 918 1190 160 58 18 10 18 4710 3010 1920 4730 572 187 45.5 14.7 11.8 26.4 27.8 426 358 528 528 256 13 18 13 58 290 290 160 358 109 43.4 1650 1090 4240 1940 1740 2190 83.9 25.4 54.3 375 593 1240 2781 682 1220 281 1840 491 4.57 2.92 1.86 4.59 .555 .182 .044 .014 .011 .026 .027 .042 1.60 1.06 ,12 2.13 .081 .025 .053 .364 .576 1.14 2.70 .662 1.18 .273 1.79 .477 .85 3.37 2.08 5.29 .62 .21 .05 .02 .01 .03 .03 .05 1.67 1.22 4.60 2.17 1.89 2.46 .09 .03 .06 .41 .66 15.31 2.01 .69 1.36 .30 2.06 .63 Kaskaskia Eiver at Vandalia, III. This station is located at the highway bridge at the east end of Main street, Vandalia, 111. It was established Feb. 26, 1908, to obtain data for use in studying drainage questions, flood protection, levee construc- tion, and for general statistical and comparative purposes. No tribu- taries of any size enter the river near Vandalia. The drainage area above this point is about 1,980 square miles. The river for some miles above and below Vandalia is leveed along the left bank. It is claimed that these levees, by confining the floods, have caused floods of unusual height on the right side of the river, and a number of law suits have been instituted to recover damages to property situated on the right bank. During extreme floods these levees some- times give way, thus reducing the flood flow; all the water, however, eventually passes the gaging section. 74 The datum of the gage has remained unchanged since its installation. The records are reliable and accurate. Kaskaskia Eiver. Discharge Measurements of Kaslcashia River at Vandalia, III. 190S to 1910. Date. Hydrographer. Width- Feet. Area of section— Sq. ft. Mean velocity —Ft. per sec. Gage height- Feet. Dis- charge- Sec, ft. 1908 February March Maich April July August 1909 February March March May May Nov. 1910 March May June R.J.Taylor R.J. Taylor R. J. Taylor R.J.Taylor R. J. Tayloi R.J. Taylor R.J.Taylor Wm. M. O'Neill. Wm. M. O'Neill. H. J. Jackson . . . H.J.Jackson... H.J.Jackson. . . H. J. Jack.son. H. J. Jackson . H. J. Jackson . 155 2349 2.93 18.53 128 1506 1.59 10.1 128 1434 1.49 9.6 Ul . 1886 1.91 12.9 112 713 0.40 3.6 106 563 0.15 2.3 156 2439 2.18 15.78 1.32 1154 1.16 7.26 121 908 0.77 5.33 151 2095 1.96 13.86 123 1033 0.99 6.41 124 1076 1.34 7.15 119 762 0.70 4.7S 152 2010 1.99 13.90 126 1130 1.39 8.05 6874 2400 2133 3597 287 84 5327 1339 702 4105 1027 1439 533 4000 1570 75 Kaskaskia Eiver. Daily Gage Height in Feet of Kashaskia River at Yandalia, III., for 1908 to 1910. 190? Day. Jan. Feb Mar. Apr. May June. July. Aug. .Sept. Oct. Nov. 18.2 8.2 n.7 7.4 4.0 2.4 2.0 1.5 1.3 18.0 12.0 11.0 7.5 3.8 2.3 1.9 1.5 1.3 17.8 13.2 10.6 7.0 3.9 2.2 1.7 1.6 1.3 17.6 12.2 13.9 6.6 3.8 2.0 1.6 1.6 1.3 17.2 10.5 17.1 6.6 3.6 1.9 1.5 1.6 1.3 17.4 10.4 21.2 6.8 3.6 2.0 1.5 1.5 1.3 17.8 lO.S 20.5 6.6 3.5 2.1 1.5 1.5 1.3 17.4 12.4 20.8 6.4 3.6 2.2 1.4 1.4 1.2 18.0 15.0 19.9 5.6 4.4 1.8 1.4 1.2 18.8 15.6 19.2 5.8 4.3 1.8 1.5 1.2 18.9 14.2 18.5 6.3 4.0 1.7 1.5 1.3 18.4 12.2 18.1 6.0 3.7 1.6 1.4 i.3 1.3 17.7 10.6 18.1 6.1 3.5 1.8 , 1.4 1.3 1.3 17.0 9.8 17.7 5.S 3.3 2.0 1.5 1.3 1.3 16.3 9.4 17.3 5.2 3.2 2.0 1.5 1.3 1.3 14.6 9.0 17.1 5.2 3.2 2.2 1.5 1.3 1.3 12.7 8.2 17.0 4.8 3.4 2.4 1.5 1.3 1.4 11.3 8.0 16.8 4.6 3.8 2.6 1.4 1.3 1.5 10.0 8.2 16.5 4.5 3.6 2.3 1.4 1.3 1.5 9.6 8.3 16.0 4.8 3.6 2.2 1.5 1.3 1.6 9.2 7.7 15.0 6.6 3.6 2.0 1.2 1.3 1.6 8.8 6.9 14.9 5.6 3.8 1.9 1.2 1.3 1.6 8 7 6.5 16.6 5.0 3.2 1.8 1.4 1.3 1.6 8.7 9.9 16.8 4.6 3.0 1.7 1.4 1.3 1.6 8.6 15.1 15.9 4.2 2.9 1.6 1.3 1.3 1.6 8.2 16.2 14.4 4.1 2.8 1.6 1.3 1.3 1.7 7.8 16.3 12.1 4.0 2.7 1.5 1.4 1.3 1.7 7.6 16.2 10.6 3.7 2.7 1.5 1.4 1.3 1.8 7.4 15.4 9.6 3.5 2.6 1.5 1.5 1.3 1.8 7.2 13.0 9.0 4.4 2.6 1.6 1.5 1.3 1.8 7.1 8.4 2.4 1.7 1.3 Dec. 18.4 19.5 19.8 19.0 1.8 1.7 1.7 1.6 1.6 1.6 1.6 1.7 1.8 1.8 1.8 1.8 1.8 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.6 1.6 1.6 1.6 1.6 1.6 1.5 1.5 1.5 1.5 76 Kaskaskia River. Daily Gage Height m Feet of Kaskaskia Biwer at Yandalia, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. , Apr. May. June. July. Aug. Sept. Oct. N'ov. Dec. 1 1 7 3.8 12.85 4.9 12.15 13.2 5.8 6.85 1.9 1.7 2.9 4.9 2 l!8 2.7 11.55 4.75 11.0 13.1 5.0 5.2 1.9 1.7 2.8 4.8 3 1.8 2.75 10.05 4.6 10.1 13.65 4.6 4.65 1.9 1.7 2.8 4.8 4 1.7 2.8 9.35 4.5 9.65 14.1 4.3 4.3 1.9 1.7 2.7 4.7 5 1 7 2.6 9.0 4.4 9.3 14.8 4.1 4.05 1.9 1.7 2.7 4.65 6 l!7 6.35 8.5 10.35 9.0 14.9 6.2 3.85 1.9 1.6 2.65 4.4 7 1 7 8.4 7.9 17.7 8.45 12.65 10.6 3.65 1.9 1.6 2.6 4.3 g l!7 5.85 7.55 20.3 8.1 11.05 14.0 3.45 1.9 1.6 4.5 4.2 g 1 7 5.6 14.05 18.8 11.35 9.8 15.6 3.35 2.65 1.6 3.85 4.15 10 lie 8.9 16.75 17.4 14.85 9.5 16.4 3.15 4.0 1.65 3.6 4.1 11 1 6 8.55 17.1 16.5 16.55 11.35 17.0 3.0 2.8 1.5 3.35 4.4 12 lie 6.1 13.55 15.5 15.25 10.0 17.6 2.9 2.5 1.5 4.9 5.7 13. 1 6 4.8 9.75 18.3 13.75 12.85 17.9 2.85 2.3 1.5 9.7 10.3 14 1.6 6.6 8.35 20.9 13.7 14.5 18.4 2.75 2.15 1.5 8.1 11.6 15 1.6 13.35 7.75 19.7 12.35 11.7 18.2 2.7 2.0 1.6 5.4 9.9 16 i.e 12.75 7.3 18.6 10.8 9.05 17.0 2.6 1.9 1.7 6.5 9.05 17 1.7 7.95 6.9 18.25 9.65 12.75 15.7 2.6 1.9 1.7 11.55 8.8 18 1.7 7.6 6.5 17.85 8.65 15.16 13.85 2.5 1.8 1.7 9.25 8.65 19 1.85 11.3 6.2 17.5 7.95 12.8 12.75 2.5 l.S 2.6 7.6 8.4 20 2 35 15.55 6.0 17.4 7.35 7.7 12.4 2.4 2.3 4.1 6.7 7.9 21 2.95 16.8 5.9 17.75 6.8 6.75 12.2 2.3 3.35 3.75 6.15 22 3.0 16.9 5.75 18.35 6.45 6.2 11.25 2.2 3.85 3.6 7.8 23 3 16.75 5.45 18.45 6.05 5.7 9.9 2.2 4.2 3.8 10.65 24 2.8 16.95 5.35 18.0 5.9 5.6 8.65 2.15 3.0 4.25 11.15 25 2.65 17.2 6.6 17.6 6.15 5.25 8.1 2.1 2.65 4.05 9.9 *5.5 26 2.55 16.85 7.25 17.25 8.6 5.4 6.8 2.1 2.15 2.95 7.9 27 2.5 15.9 6.6 16.8 8.75 5.85 6.5 2.0 2.05 3.16 6.85 28 2.45 14.3 5.75 16.55 8.9 5.6 5.9 2.0 1.9 3.0 6.0 29 3.8 5.5 16.2 9.1 5.3 5.6 1.9 1.8 3.0 5.5 30 4.75 5.3 14.25 9.6 5.6 5.85 1.9 1.7 2.9 5.15 31 5.15 11.9 7.2 1.9 2.9 **5".4* Gage heights Dec. 8, 9 and 10, were affected by ice conditions. * Deo. 25 and 31 gage heights arc to top of ice. 77 Kaskaskia Eiver. Daily Gage Height in Feet of Kaskaskia River at Vandalia, III., for 1908 to 1910. 1910. Dav. Jan. 6.3 Feb. Mar. Apr. May. June. 6.95 6.8o 7.5 7.35 6.15 6.3 6.2 6.2 6.1 5.8 5.35 4.95 4.9 4.9 4.9 4.8 19.7 4.3 19.3 4.25 18.25 4.2 17.35 4.1 16.3 4.1 14.95 4.0 13.35 4.0 11.75 3.9 10.05 3.9 9.15 3.8 8.4 3.8 8.0 3.8 7.35 3.7 7.0 3.7 6.6 3.7 6.25 4.0 6.05 5.9 5.,S.5 7.0 5.65 7.05 5.45 6.25 5.35 5.45 5.25 4.8 5.1 4.6 5.0 4.5 4.95 4.45 4.8 6.5 4.7 5.75 4.6 5.2 4.55 4.95 4.5 4.8.5 4 4 4.8 5.25 7.0 11.1 8.05 7.05 7.35 10.9 11.45 10.05 9.5 13.8 15.25 13.05 10.8 9.35 8.8 8.15 7.55 7.05 7.15 12.8 15.05 16.95 18.55 18.3 17.25 16.05 14.15 14.8 13.8 10.75 9.1 8.25 8.15 9.65 8.7 7.15 6.5 6.1 5.85 5.8 5.5 5.15 5.0 4.95 4.8,5 4.65 4.4 4.1 4.2 4.3 4.4 4.5 4.6 3.4 3.95 6.0 4.75 4.05 5.0 Gage heights Jan. 1-7, were affected by ice conditions; Jan. 9 and 10 were obtained by interpolation. 78 Kaskaskia Eiver. Daily Discharge of Kashaskia Eiver at Yandalia, III., for 1908 to 1910. 1908. Day. Jan. Feb. ^far. Apr. May. June. July. Aug. Sept. Oct. Nov, Dee. 6320 6870 7020 6620 Total 26830 123210 90370 6220 6120 6020 5920 5720 5820 6020 5820 6120 6520 6570 6320 5970 6620 5270 4440 3550 2910 2350 2190 2030 1870 1830 1830 1790 1640 1480 1410 1340 1270 1230 1640 3230 3780 3320 2560 2520 2480 3410 4630 4920 4250 3320 2600 2270 2110 1950 1640 1560 1640 1670 1450 1170 1040 2310 4680 5220 5270 5220 4820 3090 2780 2600 4100 5670 7720 7370 7520 7070 6720 6370 6170 6170 6970 5770 5670 5620 5520 5370 6120 4630 4580 5420 5520 5070 4340 3280 2600 2190 1950 1710 1340 1370 1200 1070 1070 1140 1070 1010 788 844 984 900 928 844 678 678 575 527 603 575 1070 788 625 527 431 408 386 318 276 479 385 340 362 340 296 296 276 296 479 455 385 318 276 236 216 216 256 340 296 296 296 340 216 180 164 149 135 135 122 122 99 153680 23401 8318 78 69 50 59 68 78 42 42 35 29 42 59 59 78 99 122 88 78 59 50 42 35 29 29 24 24 24 29 35 1708 705 553 668 1023 Discharge Oct. 9, 10 and 11 was obtained by interpolation 79 Kaskaskia Eiver. Daily Discharge of Kaskaskia River at Vandalia, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 35 .340 3620 600 3300 3780 844 1150 50 35 164 600 2 42 135 3020 563 2780 3740 625 678 50 35 149 575 3 42 142 2370 527 2390 3990 527 539 50 35 149 575 4 35 149 2090 503 2210 4200 455 455 50 35 135 651 5 35 122 1950 479 2070 4530 408 396 50 35 135 539 6 35 999 1750 2500 1950 4580 956 351 50 29 128 479 7 35 1710 1520 5970 1730 3530 2600 307 50 29 122 455 8 35 858 1390 7220 1600 2800 4150 266 50 29 503 400 9 35 788 4170 6520 2930 2270 4920 246 128 29 351 380 10 29 1910 5500 5820 4560 2150 5320 207 385 26 296 360 11 29 1770 5670 5370 5400 2930 5620 180 149 24 246 479 12 29 928 3940 4870 4750 2350 5920 164 110 24 600 816 13 29 575 2250 6270 4040 3620 6070 156 88 24 2230 2480 14 29 1070 1690 7570 4010 4390 6320 142 73 24 1600 3050 15 29 3850 1460 6970 3390 3090 6220 135 59 29 732 2310 16 29 3580 1300 6420 2690 1970 5620 122 50 35 1040 1970 17 35 1540 1170 6240 2210 3580 4970 122 50 35 3020 1870 18 35 1410 1040 6040 1810 4700 4080 110 42 35 2050 1810 19 46 2910 956 5870 1540 3600 3580 110 42 122 1410 1710 20 94 4900 900 5820 1320 1450 3410 99 88 408 1100 1520 21 172 5520 872 6000 1140 1120 3320 88 246 329 942 1200 22 180 5570 830 6300 1030 956 2890 78 351 296 1480 1200 23 180 5500 746 6340 914 816 2310 78 431 340 2630 1000 24 149 5600 718 6120 872 788 1810 73 236 443 2850 800 25 128 5720 1070 5920 942 692 1600 68 128 396 2310 500 26 116 5540 1280 5740 1790 732 1140 68 73 172 1520 500 27 110 5070 1070 5520 1850 858 1040 59 64 207 1150 500 28 104 4290 830 5400 1910 788 872 59 50 180 900 400 29 340 760 5220 1990 705 788 50 42 180 760 400 30 563 705 4270 2190 788 858 50 35 164 664 400 31 452 664 3180 1270 50 164 400 Total. 3236 72496 57301 149022 74488 75493 90513 6656 3320 3948 31366 30229 Discharge Dec. 8-10, Dec. 21-23 was estimated from the gage heights, climatological and other data. Year period, 598068. 80 Kaskaskia Eivee. Daily Discharge of Kaskaslcia River at Yandalia, III., for 1908 to 1910. 1910. Dav. Jan. Feb. Mar. Apr. May. June. 400 1180 6970 455 575 2670 500 1150 6770 443 692 1990 600 1370 6240 431 1200 1660 700 1320 5800 408 2820 1620 800 942 5270 408 1580 2210 900 984 4610 385 1220 1830 940 956 3850 385 1320 1250 984 956 3120 362 2740 1040 1040 928 2370 362 2980 928 1090 844 2010 340 2800 858 1150 718 1710 340 2150 844 1690 612 1560 340 4060 760 2560 600 1320 318 4750 664 3530 600 1200 318 3710 625 4630 600 1070 318 2690 612 4270 575 970 385 2090 588 3690 575 914 872 1870 539 3900 575 858 1200 1620 479 5670 575 802 1220 1390 408 5870 575 746 970 1220 431 5440 aso 718 746 1250 455 5270 774 692 575 3600 479 5220 718 651 527 4650 503 4410 692 625 503 5600 527 3900 664 612 491 6400 256 3000 760 575 1040 6270 374 2310 5020 551 830 5740 900 1870 ' 6220 527 678 5140 563 1600 1 515 612 4220 396 1460 503 588 4530 625 1300 479 4060 , 80694 32313 64608 16850 94937 27084 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 , 29 30 31 Total Discharge Jan. 1-7; was estimated from climatological and other data. 81 Kaskaskia Eiver. Rating Table for Kaskaskia River at Vandalia, III. 190S to 1910. Gage height- Feet. Dis- charge — Sec. ft. Gage height- Feet. Dis- chai^e — Sec. ft. Gage height — Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 1 00 5.90 6.00 6.10 6.20 6 30 .- 872 900 928 956 984 10.70 10.80 10.90 2648 2692 2736 15.50 15.60 15.70 15.80 15 90 4870 1.10 1.20 12 l.T 19 24 29 4920 4970 1.30 1.40 11.00 11.10 11.20 11.30 11.40 11.50 11.60 11.70 11 80 2780 2824 2868 2912 2956 3000 3046 : 3092 3138 5020 5070 1.50 1.60 6.40 6.50 6 60 1014 1044 1074 16.00 16.10 16.20 16.30 5120 5170 1 70- -. 35 42 50 5220 1.80 6.70 6.80 6.90 7.00 7.10 7.20 7.30 7.40 7.50 7.60 7.70 7.80 7.90 8.00 8.10 8.20 8.30 8.40 8.50 8.60 8.70 8 80 1104 1136 1168 1200 1234 1268 1302 1338 1374 1410 1446 1484 1522 1560 1598 1636 1674 1712 1750 1790 1830 1870 5270 1 90.. 16.40 16 50 5320 5370 2.00 59 2.10 68 78 16.60 16.70 16 80 5420 2.20 11.90 12.00 12.10 12.20 12.30 12 40 3184 3230 3276 3322 3368 3414 5470 5520 2.30 88 2.40 99 16 90 . 5570 2.50 2.60 2.70 110 122 135 149 17.00 17.10 17.20 17.30 17.40 17.50 17.60 17.70 17.80 17.90 18.00 18.10 18.20 18 30 5620 567C 5720 2 80 12.50 12.60 12.70 12.80 12.90 13.00 13.10 13 20 3460 3506 3552 3698 3644 3690 3736 3782 5770 5820 5870 2 90. 164 3 00 180 3.10 198 . 5920 5970 6020 6070 6120 3.20 3.30 3.40 3.50 216 236 256 276 3.60 3.70 3.80 296 318 340 13.30 13.40 13.50 13 60 3828 3874 3920 3966 6170 6220 6270 3.90 362 385 408 18.40 18.50 18.60 18 70 6320 4.00 4 10 8.90 9.00 9.10 9.20 9.30 9.40 9.50 9.60 9.70 9 80 1910 1950 1990 2030 2070 2110 2150 2190 2230 2270 13.70 13.80 13.90 14.00 14.10 14.20 14.30 14.40 14.50...... 14.60 14.70 14.80 14.90 15.00 15.10 15 20 4012 4058 4104 4150 4198 4246 4294 4342 4390 4438 4486 4534 4582 4630 4678 4726 6370 6420 4.20 431 6470 4.30 4.40 455 479 18.80 18 90 6520 6570 4.50 503 19.00...... 19.10 19.20 19 30 6620 4 60 527 6670 4.70 4.80 551 575 6720 6770 4.90 600 625 651 678 19.40 19.50 19.60 19.70 19 80 6820 5.00 5.10 5 20 9.90 10.00 10.10 10.20 10 30 2310 2350 2392 2434 2476 6870 6920 6970 5.30 705 . . , 732 7020 5 40 19.90 20 00 7070 5.50 760 10.40 10.50 10.60 2518 2560 2604 7120 5 60 788 15.30 15.40 4774 4822 21.00 22.00 7620 5.70 5.80 816 844 8120 Note— The above table is not applicable for ice or obstructed channel conditions. It is based on 15 discharge measurements made during 1908-1910 and is well defined between gage heights 2.3 feet and 14.0 feet. Above gage height 15.5 feet the rating curve is tangent, the difference being 50 per tenth. 6 S W 82 Kaskaskia Eiver. Monthly Discliarge of Kaskaskia. Biver at Yandalia, III., for 190S to 1910. (Drainage Area 1980 Square Miles.) Month. Discharge in Second-feet. Maximum. Minimum. Mean. Run-off. Second-feet per square mile. Depth in inches. Accuracy. 1908 March April May June July August September October November. . . December 1909 January February March April May June July August September... October November December The year. 1910 January February March April May June 6570 5270 7720 1370 479 122 59 29 42 42 563 5720 5670 7570 5400 4700 6320 1150 431 443 3020 3050 7570 5870 6220 6970 1220 6400 2670 1230 1040 1710 276 99 24 12 15 15 24 29 122 664 479 872 692 408 50 35 24 122 575 479 318 575 256 3970 3010 4960 780 268 55.1 23.5 17.8 22.3 33.0 104 2590 1850 4970 2400 2520 2920 215 111 127 1050 975 1650 2600 1150 2080 562 3060 903 2.01 1.52 2.51 .394 .135 .028 .012 .0090 .011 .017 .052 1.31 .934 2.51 1.21 1.27 1.47 .109 .056 .064 .530 .492 .834 1.31 .581 1.05 .284 1.55 .456 2.32 1.70 2.89 .44 .16 .03 .01 .01 .01 .02 .06 1.36 1.08 2.80 1.40 1.42 1.70 .13 .06 .07 .60 .57 11.25 1.51 .60 1.21 .32 1.79 .51 KasKA.sk 1 A IklVKU AT C'AKLYLE, IlL. This station is located at the B. & 0. S. W. Kailroad bridge, about one-fourth mile east of the railroad station at Carlyle, 111. It was established March 2, 1908, for the purpose of obtaining data for use in studying drainage, flood control, and water supply problems, and to obtain general statistical and comparative data. 'J'hcrc are no tributaries of any size for ten miles above and below this station. Shoal creek is tributary on the right bank about fifteen miles below the station. 'J'he drainage area above the gaging station is about 2,680 square miles. The intake of the water sup])ly system of Carlyle is above the gaging station. There is a dam a)H)ut lU/o ^^^'t high about 700 feet above the section which is used for water supply purposes. The average amount of water pumped is about .3,r)0(),(l0() gallons every thirty days, and during .Iiitic. .Inly and August the (pianlity is about 4,500,000 gallons every 83 thirty days. The outfalls of one section of the city sewerage system and some private sewers are above the gaging station, so the diversion is small. The datum of the gage lias remained unchanged since its installation; the records are accurate and reliable. The flood of 1882, which is the highest known, is said to have reached a height of 1% feet higher than the- flood of 1908, or about 321/2 feet on the present gage. The stream never goes dry at this point. It has been noticed during periods of low water that the water is hard, which fact indicates that the flow is kept up by springs. Kaskaskia Eiver. Discharge Measurements of Kasl^askia River at Carhjle, III., for 1908 to 1910. Date. Hydrographer. Width- Feet. Area of section — Sq.ft. Mean velocity —Ft. per sec. Gage height- Feet. Dis- charge- See, ft. 1908 March 23 May 4 July 8 August 7 September 24 October 22 February March March May October November November December December 1910 March May May May- June June June June R.J. Taylor. R.J. Taylor. R.J. Taylor. R.J. Taylor. R.J. Taylor. R.J. Taylor. R.J. Taylor Wm. M. O'Neill. Wm. M. O'Neill. H. J. Jackson . . . H. J. Jackson. . . H. J. Jackson . . . H. J.Jackson. . . H. J.Jackson. . . H. J.Jackson... H. J.Jackson. C. F. Bailey... C. F. Bailey... C. F. Bailey... C. F. Bailey... C. F. Bailey... C. F. Bailey... C. F. Bailey... 511.5 131 124 514 531 149 177 129 228 229 142 139 139 158 522 526 526 198 198 166 3768 335 239 3663 4485 773 1538 276 2081 2119 595 520 531 1020 3510 3910 4040 2150 1900 1160 1.60 1.42 1.27 1.21 1.29 1.59 1.63 1.72 1.43 1.86 1.83 1.58 1.54 1.54 1.80 1.34 1.36 1.52 1.81 1.74 1.67 16.7 21.35 8.1 7.1 *5.6 20.70 22.29 10.86 15.36 7.32 17.77 17.84 9.63 9.11 9.24 12.70 20.52 21.17 21.76 18.92 17.66 13.63 2828 5358 .426 289 62 32 4714 7111 1259 2645 395 3871 3881 939 801 818 1840 4710 5310 6150 3890 3310 1940 Partly estimated. 84 Kaskaskia Eiver. Daily Gage Height in Feet of Kaskashia Eiver at Carlyle, III., for 1908 to 1910. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 23.7 23.6 23.3 23.1 22.9 22.8 22.8 22.8 23.1 23.6 23.7 23.4 23.3 23.0 22.7 22.4 22.2 21.9 21.6 20.8 18.3 16.6 14.9 13.6 13.1 12.6 12.3 12.7 12.8 12.9 13.9 16.1 17.6 18.2 18.5 18.4 18.0 18.0 19.0 19.9 20.7 21.2 21.5 21.5 21.3 20.5 19.1 17.1 15.9 14.8 14.0 12.8 12.3 15.4 18.1 19.9 21.2 21.7 22.0 22.2 22.2 22.1 21.8 21.3 21.8 23.1 24.9 29.1 30.8 30.0 28.8 27.3 26.3 25.5 24.9 24.4 24.0 23.6 23.3 23.0 22.7 23.1 22.9 22.7 22.5 22.2 22.0 21.9 21.8 21.8 20.6 19.1 15.6 13.3 12.5 11.9 11.6 11.7 11.2 11.1 11.9 11.0 10.6 10.6 10.5 10.4 9.8 9.7 9.4 9.1 8.9 9.3 10.3 10.3 9.3 9.0 8.6 8.5 8.4 8.5 8.3 8.0 8.2 8.2 8.1 8.0 8.1 8.1 8.0 8.0 7.7 8.5 8.2 8.0 8.0 7.8 7.6 7.7 7.9 7.8 8.2 8.1 9.2 8.3 8.5 9.4 9.3 8.2 8.0 7.6 7.5 7.3 7.0 6.8 6.7 7.1 7.1 7.2 6.9 6.7 6.7 6.5 6.5 6.5 6.5 6.4 6.4 6.4 6.3 6.1 6.0 6.0 5.9 5.9 5.9 5.9 6.1 6.5 6.5 6.1 6.0 6.0 5.9 5.8 5.8 5.9 5.9 5.8 5.9 5.7 5.7 5.7 5.7 5.7 5.6 5.7 5.7 5.6 5.7 5.7 5.6 5.7 5.r 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5,6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.9 5.9 5.9 5.9 5.9 5.9 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 85 Kaskaskia River. Daily Gage Height in Feet of Kaskaskia River at Carlyle, 111., for 1908 to 1910. Pay. Jan. Feb Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 5.6 7.0 21.4 9.9 22.2 15.3 9.7 10.3 5.75 5.85 6.6 10.0 2 5.6 7.2 21.3 9.9 22.1 17.2 9.3 11.8 5.75 5.7 6.5 9.65 3 5.6 7.5 20.9 9.2 22.0 17.6 8.8 10.3 5.75 5.7 6.45 9.3 4 5.6 7.5 20.7 9.4 21.5 18.7 8.6 8.9 5.7 5.7 6.45 9.05 5 5.6 7.5 20.2 9.4 21.2 19.3 8.1 8.4 5.7 5.65 6.5 8.9 6 5.6 8.7 19.9 9.9 21.0 19.5 8.5 8.1 5.7 5.6 6.55 8.75 7 5.6 9.1 19.9 12.8 15.5 19.8 12.0 7.8 5.7 5.6 7.6 8.8 8 5.6 9.4 20.4 17.2 13.8 19.9 15.0 7.5 5.7 5.6 6.95 8.8 9 5.6 10.4 20.8 18.5 14.6 19.8 17.0 7.4 5.7 5.55 10.0 8.65 10 5.6 10.7 21.2 19.3 16.8 18.6 18.0 7.3 5.7 5.55 10.95 7.95 11 5.6 11.1 21.9 19.8 18.4 16.2 18.6 7.1 10.3 5.55 8.9 8.75 12 5.7 12.1 22.9 20.0 19.0 15.6 19.1 7.0 8.8 5.5 8.5 13.5 13 ,^.7 12.3 22.9 23.2 19.6 16.0 19.7 6.9 • 7.1 5.5 9.8 18.6 14 5.7 12.7 19.9 24.3 20.0 16.5 20.1 6.8 6.4 5.4 12.2 18.95 15 5.7 13.4 18.0 25.0 20.4 17.4 20.6 6.75 6.1 5.4 16.2 19.7 16 5.7 14.5 13.2 25.3 20.6 17.8 21.0 6.6 6.4 5.4 14.1 20.1 17 5.7 14.7 12.5 25.4 20.9 16.6 21.3 6.5 6.6 5.9 15.45 19.6 18 5.7 15.1 12.0 25.4 20.9 15.5 21.6 6.4 6.4 6.1 17.7 17.45 19 5.7 16.9 11.9 25.0 18.6 17.3 21.9 6.35 6.0 7.4 18.0 14.85 20 5.7 19.0 11.8 24.2 15.0 17.8 22.0 6.3 5.8 9,6 14,65 14.45 21 5.7 19.4 11.8 24.1 12.7 16.6 22.0 6.2 5.85 9.4 12.0 13.7 22 5.9 19.8 11.5 24.1 11.8 12.6 21.8 6.15 5.9 8.9 11.65 13.05 23 5.9 20.4 11.2 24.1 11.0 10.8 21.4 6.1 8.0 8.3 14.9 12.7 24 5.9 20.7 11.2 24.1 10.6 10.0 20.6 6.1 8.9 8.4 18.4 12.7 25 6^1 21.2 11.2 24.1 10.2 9.8 18.6 6.0 8.0 8.4 19.1 12.6 26 6.1 21.4 11.3 24.0 11.0 9.4 15.0 6.0 7.2 8.3 19.0 11.9 27 6.3 21.9 11.3 24.0 12.3 9.5 12.7 6.0 6.4 7.7 16.25 10.85 28 6.6 21.9 11.0 23.8 13.2 9.8 11.5 5.95 6.1 7.2 13.6 10.7 29 6.6 10.7 23.6 13.3 10.0 10.5 5.9 6.0 6.9 11.2 9.95 30 6.7 10.6 23.0 13.6 9.9 9.9 5.85 5.9 6.7 10.5 9.65 31 6.8 10.2 13.9 9.6 5.75 6.6 9.65 Gage heights Dec. 8-10, 23-24 were affected by ice conditions. Gage heights Dec. 25-31 are to top of ice. 86 KASKASKI4- ElYER. VaUij Gage Heiglit in Feet of Kasl'askia River at Carlijle, III., for 1908 to 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 9.6 10.0 10.3 10.7 11.4 11.6 12.3 12.4 10.5 11.5 11.0 10.9 16.0 19.4 20.4 21.0 21.5 21.6 21.8 21.9 22.0 22.1 22.0 21.9 21.8 21.6 21.5 21.4 20.9 17.8 15.7 13.7 12.5 12.0 12.7 13.7 12.8 11.9 11.2 10.7 10.5 10.3 10.0 9.8 9.6 9.4 9.5 9.9 10.4 11.1 10.5 10.2 10.6 il.8 13.5 13.6 12.2 16.1 20.9 22.1 23.8 24.8 24.5 24.1 23.6 23.0 22.6 22.2 17.3 16.1 14.8 13.2 13.0 1^.2 11.5 11.0 10.6 10.3 10.1 10.0 9.7 9.6 9.5 9.25 9.2 9.05 8.9 8.7 8.6 8.4 8.3 8.2 8.1 8.0 8.1 8.2 8.3 8.3 8.1 7.9 7.8 7^6 7.5 7.5 8.7 10.1 11.4 11.2 10.7 9.8 9.3 8.9 8.7 8.5 8.4 8.5 9.2 9.9 9.6 9.2 8.9 8.7 10.0 11.3 12.4 12.2 13.5 15.0 16.3 16.0 15.0 17.1 18.2 18.4 •18.6 17.1 15.7 13.5 12.6 11.8 13.7 18.0 19.0 19.6 20.2 20.6 20.9 21.3 21.6 21.9 21.8 2 21.7 3 21.5 20.6 5 19.7 6 18.9 17.0 8 13.9 9 12.4 10 11.3 11 10.7 12 10.2 1:3 9.8 14 '• 9.4 15 9.2 16 9.0 17 8.8 18 8.6 19 . . 8.4 20 8.2 21 8.0 22 • 7.9 23 7.8 24 7.75 25 26 27 28 . .. 7.4 7.8 8.4 29 10.8 30 9.6 31 87 Kaskaskia Eiver. Daily Discharge of Kaskasl-ia Hirer at Carhjle, 111, for 1908 to 1910. 190S. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 2120 2790 3290 3500 3610 3570 3430 3430 3800 4220 4750 5360 5810 5810 5510 4580 3840 3110 2730 2390 2140 1790 1650 2570 3470 4220 5360 6110 6570 6870 6870 6720 6270 5510 6270 8240 11000 17400 19900 18700 16900 14600 13100 11900 11000 10200 9610 ■9000 8550 8090 7630 8240 7940 7630 7330 6870 6570 6420 6270 6270 4660 3840 2640 1940 1710 1540 1460 1490 1350 1330 1540 1300 1190 1190 1160 1140 978 952 874 796 744 848 1110 1110 848 770 666 640 615 640 590 515 565 565 540 515 540 540 515 515 442 640 565 515 515 466 418 442 490 466 565 540 666 848 822 590 640 , 874 1 848 565 575 1 418 394 346 280 240 220 302 302 324 260 220 220 184 202 202 184 184 184 166 166 166 148 116 100 100 86 86 86 86 116 184 184 116 100 100 86 72 72 86 86 72 86 59 59 59 59 59 47 59 59 47 59 59 47 59 59 47 •47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 "47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 2 9150 9000 8550 8240 7940 7790 7790 7790 8240 9000 9150 8700 8550 • 8090 7630 7180 6870 6420 5960 4850 3540 .2950 2420 2020 1880 1740 1650 1770 1790 1820 47 3 1 86 4 86 5 86 6 86 7 86 g 86 9 59 10 59 11 59 12 59 13 59 14 59 15 59 16 59 17 59 18 59 19 59 20 59 21 59 22 23 47 24 25 1 47 26 47 27 28 47 47 29 30 31 Total 178470 118400 296110 37001 1 17660 6038 1948 1457 1410 1847 88 Kaskaskia Eiver. Daihj Discharge of Kaslcashia Evver at Caiiyle, III., for 1908 to 1910. Day. Jan. Feb. Mar. Apr. May. j June. July. Aug. Sept. Oct. .Nov. Dec. 1 2 3 4 5 6 ^'.'.V.'.'. 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 47 59 59 59 59 59 59 59 59 59 59 86 86 86 116 116 148 202 202 220 240 280 324 394 394 394 692 796 874 1140 1220 1330 1600 1650 1770 1970 2300 2360 2480 3050 3800 3970 4160 4510 4750 5360 5660 6420 6420 5660 5510 4970 4750 4380 4220 4220 4510 4850 5360 6420 7940 7940 4220 3430 1910 1710 1570 1540 1520 1520 1440 1350 1350 1350 1380 1380 1300 1220 1190 1080 1000 822 822 874 874 1000 1790 3150 3610 3930 4160 4270 8390 10100 11100 11600 11700 11700 11100 9910 9760 9760 9760 9760 9760 9610 9610 9310 9000 8090 6870 6720 6570 5810 5360 5090 2600 2080 2330 3020 3570 3800 4060 4270 4510 4660 4970 4970 3650 2450 1770 1520 1300 1190 1080 1300 1650 1910 1940 2020 2120 2540 3150 3290 3690 3930 4020 4160 4220 4160 3650 2820 2640 2760 2920 3220 3360 2950 2600 3180 3360 2950 1740 1250 1030 978 874 900 978 1030 1000 952 848 718 666 540 640 1570 2450 3080 3430 3650 3840 4110 4330 4660 5090 5510 5960 6420 6570 6570 6270 5660 4660 3650 2450 1770 1440 1170 1000 926 1110 1520 1110 744 615 540 466 394 370 346 302 280 260 240 230 202 184 166 157 148 132 124 116 116 100 100 100 93 86 79 66 66 66 66 59 59 59 59 59 59 59 1110 718 302 166 116 166 202 166 100 72 79 86 515 744 515, 324 166 116 100 86 79 59 59 59 53 47 47 47 41 41 41 35 35 23 23 23 86 116 370 926 874 744 590 615 615 590 442 324 260 220 202 202 184 175 175 184 193 418 270 1030 1290 744 640 978 1630 2820 2180 2590 3320 3430 2340 1570 1480 2420 3570 3840 3800 2840 2020 1350 1160 1030 939 848 783 744 705 718 600 600 500 705 2000 3650 3780 4110 4330 4060 3230 3400 2280 2060 1860 1600 1450 1300 1200 1100 950 800 700 700 Total. 2609 70068 101190 206322 105160 79350 100600 10496 6460 7686 48843 51732 Year period \ and other data. '9056. Discharge Dec. 8-10, 2.34l was estimated from the gage heights, climatological 89 Kaskaskia River. Daily Discharge of Kaskaskia EiA)er at Carlijle, III., for 190S to 1910. 1910. Day. Jan. Feb. Mar. Apr. 1 May. June. 1 926 1030 1110 1220 1410 1460 1650 1680 1160 1440 1300 1270 2760 3970 4510 5090 5810 5960 6270 6420 6570 6720 6570 6420 6270 5960 5810 5660 4970 3360 2670 . 2060 1710 1570 1770 2060 1790 1540 1350 1220 1160 1110 1030 978 926 874 900 1000 1140 1330 1160 1080 1190 1520 2000 2020 1630 2790 4970 6720 9310 10800 10400 9760 9000 8090 7480 6870 3180 2790 2390 1910 1850 1630 1440 1300 1190 1110 1060 1030 952 926 900 835 822 783 744 692 666 615 590 565 540 515 540 565 590 590 540 490 466 442 418 394 394 692 1060 1410 1350 1220 978 848 744 692 640 615 640 822 1000 926 822 1 6270 2 744 692 1030 1380 1680 1630 2000 2450 2860 2760 6110 3 5810 4 4660 4110 6 3760 7 3080 8 2120 9 1680 10 1380 11 1220 12 2450 i 1080 13 3110 3500 3570 3650 3110 2670 2000 1740 1520 2060 3430 3800 4060 4380 4660 4970 5510 5960 6420 978 14 874 15 . 822 16 770 17 718 18 666 19 615 20 . - 565 21 515 22 490 23 466 24 454 25 . . 394 26 370 27 466 28 615 29 1250 30 926 31 Total 117426 43878 107245 21276 90618 53234 90 KaSKASKIA ElYER. Rating Table for Kasl-askia River at Carlyle, III, for 1908 to 1910. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 5.00 5.10 5.20 5.30 5.40 5. .50 5.60 5.70 5. SO 5.90 6.00 6.10 6.20 6.30 6.40 6.50 6.60 6.70 6.80 6.90 7.00 7.10 7.20 7.30 7.40 7. .50 7.60 7.70 7. so 7.90 S.OO 8.10 8.20 8.30 8.40 8.50 8.60 8.70 8.80 8.90 9.00 9.10 9,20 9.30 , 9.40 9..W 9.W 9,70 9.X0 59 72 86 100 116 132 148 166 184 202 220 240 260 280 302 S24 346 370 S94 418 442 466 490 515 540 565 590 615 640 666 692 718 744 770 796 822 848 874 900 926 952 078 9,90 1004 lO.fXJ 1030 10.10 10.57 10.20 1084 10.30 111! 10.40 1138 10.50 1165 10.60 1192 10.70 1219 10.80 1246 10.90 1273 11.00 1300 11.10 1327 11.20 1354 11.30 1381 11.40 1408 11.50 1435 11.60 1462 11.70 1489 11.80 1516 11.90 1543 12.00 1570 12.10 1598' 12.20 1626 12.30 16.54 12.40 1682 12.50 1710 12.60 1738 12.70 1766 12.80 1794 12.90 1822 13.00 1850 13.10 1879 13.20 1908 13..30 1937 13.40 1966 13.50 1995 13.60 2025 13.70 20.55 13.80 2085 13.90 2115 14.00 2145 14.10 2175 14.20 2205 14..30 2235 14.40 2265 14.50 2295 14.60 2.326 14.70 2.3.57 14.80 23S8 14.90 2419 15.00 24.50 15.10 2481 15.20 2.512 15. .30 2.543 15.40 2574 15.50 2605 15.60 2636 15.70 2667 15.80 2698 15.90 2729 16.00 2760 16.10 2792 16.20 2824 16.30 2856 16.40 2888 16.50 2920 16.60 2952 16.70 2984 16.80 3016 16.90 3048 17.00 .3080 17.10 3114 17.20 3148 17.30 3182 17.40 3216 17.50 32.50 17.60 3286 17.70 3322 17.80 .3358 17.90 3394 18,00 34:^0 18.10 3466 18.20 3.502 18.30 3538 18.40 3574 18.50 3610 18.60 3648 18.70 36S(i 18.80 3724 18.90 3762 19.00 3800 19.10 3S40 19.20 38S2 19.30 3926 19.40 3970 19.50 4016 19.60 4064 19.70 4114 19.80 4164 19.90 4216 20.00 4270 20.10 4326 20.20 43S4 20. .30 4446 20.40 4512 20.50 4580 20 60 4660 20.70 4750 20,80 4852 20.90 4966 21.00 5090 21.10 5222 21.20 5362 21.30 5512 21.40 5662 21.50 5812 21.60 5962 21.70 6114 21.80 6266 21.90 6418 22.00 6570 22.10 6722 22,20 6874 22.30 7026 22.40 7178 22.50 7330 22.60 7482 22.70 7634 22.80 7786 22.90 7938 23.00 8090 23.10 8242 23.20 8394 23.30 8546 23.40 8698 23. .50 8850 23.60 9002 23.70 9154 23. SO..: 9306 23.90 9458 24.00 9610 24.10 9762 24.20 9914 24.30 10066 24.40 10218 24.50 10370 24.60 10522 24.70 10674 24.80 •-..10826 24.90 10978 25.00 11130 26.00 136.50 27.00 14170 28.00 15690 29,00 17210 .30.00 187.30 31.00 20250 The al)ove table is not anplirablo for ice or obstructed cliannel conditions. It is based on 23 disclmrge measurements made durmp 1908-1910 and is woll dofincd bolAvoen gage heights 7.0 foet and 22..3 fcot. Above gage height 21.6 feet the rating curve is a tangent, the diUcrcnce l)cing 152 per tenth. 91 Kaskaskia Eiver. Monthly Discharge of Kaskaskia Eiver at Carlyle, III, for 1008 to 1910. Month. Discharge in Se coed-feet. Maximum. ifinimnm. Feet. Run-off. Second-feet per square mile. Depth j Accuracy, m mclies. 190S January February March 1-^0 April May June July August September October November December The year.. 1909 January Februaiy March April May June July August September October No vembor December The year.. 1910 January Februaiy March April May June 9150 16o0 6870 1650 19900 4660 3S40 590 874 418 394 86 116 47 47 47 47 47 86 47 240 6420 7940 11700 6S70 4220 6570 1520 1110 926 3840 4330 11700 6720 4970 lOSOO 1410 6420 6270 5950 3950 95.50 1230 570 195 64.9 47 47 59.6 2.22 1.47 3.56 .459 .213 .073 .024 .018 .018 .022 47 280 1080 822 1080 874 540 23 175 926 874 615 394 692 370 84.2 2500 3260 6880 3390 2640 3250 339 215 248 1630 1670 2180 3790 1570 3460 709 2920 1770 .031 .933 1.22 2.57 1.27 0.9S5 1.21 .127 .080 .093 .608 .623 .812 1.41 ..586 1.29 .265 1.09 .660 2.48 1.64 4.10 .51 .25 .08 .03 .02 .02 .03 .04 .97 1.11 2.87 1.46 1.10 1.40 .15 .09 .11 .68 .72 11.00 1.63 .61 1.49 .30 1.26 .74 Kaskaskia IUvek at Xew Athens^ III. This station is located at the I. C. Eailroad bridge, about 600 feet north of the I. C. Eailroad station at New Athens, 111., and about 600 feet upstream from the highway bridge. It was established Nov. 1, 1909, for the purpose of obtaining data for use in studying problems of drainage, flood control, and navigation, and to obtain general statis- tical and comparative data. Silver creek is tributary on the right bank about one mile above, and Lively creek is tributary on the left bank about three miles below the gaging section. The total drainage area above the gaging station is about 5,220 square miles. The datum of the gage has remained unchanged since its installation, and the records are accurate and reliable. The stream is fed by springs and never goes dry at this point. The flood of the fall of 1S08 reached a height of about 34.5 feet on the present gage datum. 92 A record of river height at this point from Jan. 23^ 1907, to Oct. 28, 1909, inclusive, was kept for the Xew Athens Journal by C. J. Von Roth Roffy. The river height was taken on Wednesday and Thursday morn- ings of each week, the river height for Thursday being published each Friday with the change in twenty-four hours as obtained from the river height of Wednesday. This record of stage was kept by the Journal mainly for the information of farmers living on the west side of the river, who are cut off from reaching New Athens via the highway bridge when the river reaches a stage about thirty feet. The record is authentic. These gage heights have been carefully reduced to the datum of the present gage, the maximum error is probably not over 0.4 feet., the lower the stage the greater the error. Kaskaskia River. Discharge Measurements of Kaskaskia River at New Athens, 111. 1907 to 1910. Date. Hydrographer. 1909 November November November November December December 1910 March Mav Mav May May- May May June June June Width- Feet. Area of section— Sq. ft. Mean velocity —Ft. per sec. Gage heicht- Feet. H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson C. T. Bailey . C.T.Bailey. C.T.Bailey.. C.T.Bailey.. C.T.Bailey.. C.T.Bailey. C. T. Bailey. C. T. Bailey. C.T.Bailey. Dis- charge- Sec, ft. 174 610 0.66 4.13 239 3310 2.12 16.59 250 3664 2.14 18.02 218 1818 1.36 9.80 213 1491 1.29 8.54 208 1243 1.21 7.40 205 1220 1.15 7.48 216 1780 1.58 9.96 202 2030 1.20 *9.72 213 1580 1.43 9.18 271 4250 2.75 20.55 271 4420 2.67 21.06 261 4210 2.45 20.28 260 4090 2.34 19.77 248 3520 2.25 17.63 251 3700 .u IS. 32 401 7025 7849 2468 1916 1502 1400 2820 2440 2260 11700 11800 10300 9570 7930 8650 Not fit rctriiliir. section. 93 Kaskaskia Eiver. Daihj Gage Height in Feet of Kaskashia Eiver at New Athens, III, for 1907 to 1910. 1907 Day. Jan. Feb. Mar. Apr. May. June. Illy. Aug. 1 Sept. Oct, NOV. Dec. 1 15.5 17.5 13.6 2 4 4.0 3 9.7 9.1 6.6 6.4 4 6 5 19.1 19.7 4.4 6 18.0 17.7 11.7 10.1 6.8 6.4 7 7.4 8.7 g 11.1 12.1 9 9.8 5.7 10 8.1 7.9 7.6 6.6 11 5.6 5.4 5 1 12 21.5 22.4 5 3 13 6.3 5.7 1.5.5 19.6 4.4 4.3 14 17.0 16.0 15 14.1 17.5 16 4.4 4.2 17 7.5 7.1 7.6 7.9 18 6 6 19 22.8 21.2 7 7 20 7.9 7.6 22.2 21.3 5.8 4 9 21 12.7 15.6 22 14.1 15.1 23 24.3 24.3 3.9 3.8 24 10.3 11.6 ia.6 15.6 25 4.4 4.4 15.2 26 10.1 11.1 16 7 27 2.1 9.1 17.9 17.6 5.4 5.2 28 13.5 lO.S 29 10.2 8.9 30 24.4 19.0 4.3 4.4 31 15.6 94 Kaskaskia Eiver. Daily Gage Height in Feet of Kashaskia River at New Athens, III., for 1907 to 1910. 1908. Day. 1 Jan Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Doc. 1 16.2 13.6 14.1 14.1 14.8 14.1 3.5 1 2 3.8 3.8 .=1 4 3 4 9 4 24.3 24.2 3.S 3.3 5 '".'.'.'. 10. 5 16.5 5.4 5.4 6 24.5 27.3 7 8 12.6 10.8 16.5 18.8 14.4 13.5 9 3.8 3.7 3 9 10 14.7 15.1 3 8 11 3.3 3.3 12 2C.0 19.6 5.6 6.3 13 33.2 32.2 14 3.5 3.5 15 17.1 18.0 20.1 19.3 10.3 9.4 16 3.6 3.6 3 6 17 17.5 17.3 3.5 18 22.6 22.2 3.3 3.3 19 23.9 24.7 4.7 4.6 20 24.5 23.8 21 3.3 3.3 22 10.9 10.5 12.8 11.8 8.7 8.8 23 3 4 24 : 17.5 17.2 3 5 2=1 17.1 14.1 26 24.4 24.3 4.1 4.0 27 23.9 23 4 28 3.3 3.3 29 8.0 7 6 21.1 23.1 12.1 10.8 30 3 5 31 95 Kaskaskia Eiver. Daily Gage Height in Feet of A7/.s7.7/s7,wV/ Jiirer at New Athene. III., foi 1907 to 1910. 1909 ■Day Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov.- Dec. 1 9.1 1 11.5 3.4 3.3 4.35 4.2 4.05 4.0 3.95 3.9 4.05 5.2 6.8 8.7 10.9 10.3 11.25 12.5 14.45 16.05 17.15 17.4 17.7 18.0 18.2 16.6 14.9 15.2 15.8 16.2 16.0 14.9 12.6 10.05 8 6 2 7 9 3 7.6 7.2 21.8 21.2 7 45 4 9.7 7.7 7 1 5 21.3 20.7 6 8 6 3.9 3.9 3.5 3.4 6 85 7 10.6 14.8 7 1 8 3.6 3.6 7 4 9 7 5 10 ■ 22.6 23.6 14.7 15.1 7 35 11 5.5 5.4 6.85 12 9 3 13 3.7 3.7 . ....1. 3.1 3.1 14 1 14 22.1 23.2 20.9 21.2 15 95 15 5.3 4.8 17 3 16 18.05 17 18.0 18.5 22.7 22.0 18 4 18 4.7 4.6 18 1 19 17.4 16.5 17.3 20 3.6 3.6 8.5 10.1 15 45 21 26.6 26.5 18.7 18.0 12.2 22 4.6 5.5 9.95 23 18.2 18.8 9 4 24 21.5 22.2 9.6 11.3 8.5 25 4.0 3.9 8 1 26 9.2 10.1 8 6 27 5.8 5.8 7.4 6.9 8.45 28 25.1 24.3 14.5 11.3 8 3 29 4 8 8 3 30 10.3 4.4 8 31 9.8 7 7 Gage readings Dec. 28-31 were affected by ice conditions . Gage reading Dec. 31 is to top of ice. 96 KaSKASKIA KlYEK. Daily Gage Height in Feet of Kaskas'kia River at New Athens, III., for 1907 to 1910. 1910. Day Feb. 1 Mar. Apr. May. 21.85 6.2 7.8 22.9 6.05 7.2 24.2 6.2 8.7 24.7 6.1 9.05 25.0 6.55 10.1 25.25 7.15 10.95 25.15 7.15 13.6 24.7 7.6 12.9 23.95 7.3 12.65 23.1 6.65 13.8 22.4 6.3 14.5 21.75 6.1 14.45 21.1 5.85 13.7 20.35 5.6 13.8 17.5 6.8 14.9 14.5 7.55 14.9 10.8 11.65 14.25 9.45 13.85 13.75 8.85 14.95 12.7 8.35 14.85 11.2 8.05 12.85 10.1 7.75 10.05 9.3 7.5 •8.45 13.9 7.3 7.65 18.65 7.4 7.15 19.75 7.75 6.8 20.5 7.8 6.8 21.4 7.7 6.8 21.5 7.25 6.9 21.4 6.75 7.55 21.15 6.4 20.5 June. 1 2 3 4 6 7 8 n 10 11 12 13 14 15 16 17 18 19. 20. 21 22 23 24 25 26 27. 28. 29. 30. 31. 19.95 19.3S 18.7 18.0 17.55 17.95 18.2a 18.4 17.9 15.3 12,9 11.3 10.65- 10.0 9.0 7.95 7.45 7.8 7.4 6.65 6.1 7.6 7.95 6.75 6.0 5.65 5.55 6.6 7.3 7.95 Gage height Feb. 2S was obtained by interpolation. 97 Kaskaskia River. Daily Discharge of Kasl-ashia River at New Athens, III, for 1907 to 1910. 1907. . Dav. 1 Jan. 1 Feb. Mar. 1 1 1 Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 6070 7680 4790 2 378 378 3 2580 2260 4 1090 1010 494 5 9230 9940 454 6 8130 TSfifl 3680 2800 1170 1010 7 1420 2050 8 1 3360 3900 ■ " 9 2640 770 10 1750 1650 1510 1090 11 1 738 6S2 606 12- 14100 17200 656 13 974 770 6070 9820 , 454 434 14 7260 6470 15 5090 7680 16 454 414 17 1470 1290 1510 1650 18 1090 19 18600 13000 ' 1560 20 1650 1510 16500 13400 802 560 21 4250 6150 22 5090 5790 23 24100 23700 360 344 24 2920 3630 4790 6150 25 454 454 5860 26 2800 3360 7020 27 120 2260 8040 7770 682 _ 28 4730 3190 a3o 29 2860 2150 30 24100 9120 434 454 31 6150 Total. 81020 23274 68080 17550 49670 88230 22850 40310 4428 6626 5742 17740 7 S W 98 Kaskaskia Eiver. Daily Discharge of Kaskasbia River at New Ath'ens, III, for 1907 to 1910. 190S. Day. 1 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. I 2 3 4 5 6 7 8 9 10 11 12 13 14 6620 4790 5090 5090 5580 o090 ! 296 1 i 344 6S2 ... 344 560 23700 23400 264 264 3020 6860 682 682 24400 34100 4190 3190 6860 8910 5300 4730 344 328 360 5510 5790 344 264 264 ia300 9^20 738 974 54400 51000 296 296 7340 8130 10500 9460 2920 2420 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 312 312 7680 7520 312 296 17900 16500 264 264 22300 25100 516 494 24400 22000 264 264 3240 3020 4310 3740 2050 2100 280 7680 7430 1 296 7340 5090 :::::::: 24100 2:^700 396 378 1 • 22400 20600 1 264 264 1700 1510 12700 19600 3900 3190 296 Total. 43730 125200 93930 86260 2.=i3300 41610 37280 4860 2280 1944 1584 3130 99 Kaskaskia Eiver. Daily Discharge of Kaskaslia River at New Athens, III., for 1907 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Deo. 2260 3580 280 444 414 387 378 369 360 387 630 1170 2050 3240 2920 3440 4130 5340 6510 7390 7600 7860 8130 8310 6940 5650 5860 6310 6620 6470 5650 4190 2780 2000 2 26-1 16.50 3 1.510 1340 15100 13000 14.50 2580 1560 1290 13400 11600 1170 6 7 8 9 10 360 360 296 280 1190 3080 5580 1290 312 312 1420 1470 17900 21300 5510 5790 1400 710 682. 1190 12 13 14 2360 ••••.328- 328 236 236 5090 16100 19900 12100 13000 6430 15 656 538 7520 8180 17 18 19 8130 8610 18200 15800 8510 516 494 8220 7600 6860 7520 20 312 312 ■"'ssio" 8130 1950 2800 6040 21 31700 31300 3960 2'> 494 710 2720 23 8310 8910 2420 24 25 14100 16500 2530 3460 1950 378 360 1750 2310 2800 2000 27 802 802 1420 1210 1920 28 26500 23700 5370 3460 1600 29 538 454 1450 30 2920 1300 31 2640 1200 Total. 3604 50190 109930 160120 44570 31440 54450 7280 4558 8428 121929 97660 Discharge Dec. 28-31 was estimated from the gage heights and from climatological and other data. 100 Xaskaskia Kivi:k. Daily Discharge of Kasl'asl'ia River at Xew Athens, 111., for 1907 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. \ 1510 1920 2200 2200 2250 2830 3380 3630 3580 3140 2580 2150 5303 9010 10500 11800 14600 16100 17400 18000 18000 17700 17400 16800 15100 13000 11100 10100 9230 8610 7770 7180 5260 3630 3020 3190 3800 3680 3110 2500 2120 1920 1800 1650 1580 1630 1850 2080 1900 2100 2020 2050 2180 2260 2750 3300 3520 8040 10200 15.300 18 00 23400 25100 26200 27000 26700 25100 22500 19600 17200 14900 12700 10900 7680 • .3370 3190 24.50 2120 1880 1720 1580 1470 1380 1420 1.580 1600 1560 1360 1150 1010 938 887 938 904 1070 1310 1310 1510 1380 1110 974 904 819 738 1170 1490 3660 4940 5680 5620 4340 ■ 2780 1920 1540 1310 1170 1170 1170 1210 1490 1610 1340 2050 2230 2800 3270 4790 4370 4220 4910 5370 5340 4850 4910 5650 5650 5200 4880 4250 3410 2800 2360 4970 8760 10000 11100 13700 14100 13700 12900 11100 10300 2 9520 3 8810 4 8130 7730 6 8080 8360 S 8510 9 8040 10 5930 11 4370 12 3460 13 3110 14 ... 2750 15 2200 16 1680 17 14.50 IS 1610 19 1420 20 1110 21 904 22 1510 23 1680 24 1150 25 870 28 754 27 . 724 28 1090 29 . 1380 30 -. 1680 31 . . . Total 278890 90320 324020 55452 186590 118312 101 KaSKASKIA IiIVER. FiUiuui Table for Kad-asl-ia liiver at New Athens, III. 1907 to 1910. Gage height- Feet. Dis- charge- Sec, ft. 3 00 222 3 10 236 3 20 . . . 250 3 30 264 3 40 280 3 50 ... 296 3 60 312 3 70 328 3 80 344 3 90 360 4.00 4 10 378 396 4 20 414 4 30 434 4 40 454 4 50 . . . 474 4 60 494 4 70 516 4 80 538 4 90 560 o 00 582 5 10 606 5 20 630 5 30 656 5 40 682 o.bO 5 60 710 738 5 70 770 5 .SO 802 5.90 6 00 8:36 .. 870 6 10 904 () 90 938 6 30 974 6 40 1010 6 .50 1048 6 60 10S6 fi 70 1126 6 80 1166 6 90 1208 7 00 12.50 7 10 1292 7 20 1336 7.30 7.40 7.50 7.60 7 70 1380 1424 1468 1514 1560 7 80 1606 7 90 1652 8. 00. -•-... 8.10.-.-... 8 20 1700 17.50 ISOO 8 30 1850 8 40 1900 8 50 1950 8.60 8 70 2000 2050 8 80...... 2100 8.90 21.50 Gage lielght- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 9.00 2200 9.10 22.55 9.20 2:310 9.30 2365 9.40 2420 9.v50 2475 9.60 2530 9.70 2585 9.80 2640 9.90 2695 10.00 2750 10.10 2805 10.20 2860 10.30 2915 10.40 2970 10.50 3025 10.60 3080 10.70 3135 10.80 3190 10.90 3245 11.00 3300 11.10 3.355 11.20 3410 11.30 3465 11.40 3520 11.50 3575 11.60 36.30 11.70 3685 11.80 3740 11.90 3795 12.00 3850 12.10 3905 12.20 3960 12.30 4015 12.40 4070 12.50 4130 12.60 4190 12.70 4250 12.80 4310 12.90 4370 13.00 4430 13.10 4490 13.20 45.50 13.30 4610 13.40 4670 13. .50 47.30 13.60 4790 13.70 48.50 13.80 4910 13.90..... 4970 14.00 5a30 14.10 5090 14.20 5160 14. 30.'. 52:30 14.40 5.300 14. .50 5370 14.60 5440 14.70 5510 14.80 5580 14.90 56.50 15.00 5720 15.10 5790 15.20 5860 15.30 5930 15.40 6000 15.50 6070 15.60 6150 15.70 6230 15.80 6:310 15.90 6:390 16.00 6470 16.10 6.545 16.20 6620 16. .30 6700 16.40 6780 16.50 6860 16.60 6940 16.70 7020 16.80 7100 16.90 7180 17.00 7260 17.10 7345 17.20 7430 17. .30 7515 17.40 7600 17. aO 7685 17.60 7770 17.70 7860 17.80 7950 17.90 8040 18.00 8130 18.10 8220 18.20 8310 18.30 8410 18.40 8510 18.50 8610 18.60 8710 18.70 8810 18.80 8910 18.90 9010 19.00 9120 19.10 9230 19.20 9340 19.30 9460 19.40 9580 19. .50 9700 19.60 9820 19.70 9940 19.80 10070 19.90 10200 20.00 10.3.30 20.10 10470 20.20 10620 20. .30 10780 20.40 109.50 20.50 11140 20.60 11350 20.70 11570 20.80 11810 20.90 12070 21.00 12350 21.10 12695 21.20 13040 21.30 13385 21.40 137.30 21.50 14075 21.60 14420 21.70 14765 21.80 1.5110 21.90 1.5455 22.00 15800 22.10 16145 22.20 16490 22.30 16835 22.40 17180 22.50 17.525 22.60 17870 22.70 18215 22.80 18560 22.90 18905 23.00 19250 23.10 19595 23.20 19940 23.30 20285 23.40 206.30 23.50 20975 23.60 21320 23.70 21665 23.80 22010 23.90 223.55 24.00 22700 24.10 23045 24.20 2.3390 24.30 23735 24.40 240.80 24.50 24425 24.60 24770 24.70.." 2.5115 24.80 2.5460 24.90 2.5805 25.00 26150 25.10 26495 25.20 26840 25.30 27185 25.40 27530 25. .50 27875 25.60 28220 25.70 28.565 25.80 28910 25.90 292.55 26.00 29600 27.00 3:30.50 28.00 36.500 29.00 399.50 .30.00 43400 31.00 468.50 32.00 5a300 33,00 53750 Note— The above table is not applicable for ice or obstructed channel conditions. It is based on 16 discharge measurements made during 1909-1910. Above gage height 21.0 feet the rating curve is a tan- gent, the difference being 345 per tenth. 102 Kaskaskia Eiyer. Monthly Discharge of KashasUa Biver at New Athens, III, for 1907 to 1910. (Drainage Area 5220 Square Miles.) Month. 1907 January, 4 days . . - February, 8 days.. March, 8 days April, 8 days May, 10 days June, 8 days July, 7 days.. August, 9 days September, fi days . October, 10 days.. November, 8 days. December, 8 days . The year 1908 January, 10 days-. February, 8 da j's.. March, 6 days April, 10 days May, 8 days June, 6 days July, 10 days August, 8 days — September, 7 days . October,? days. .. November, G days. December, 8 days. The year 1909 January, 8 days February, days... March, 9 days April, 9 days May, Odays June, odiiys July, 7 days August, 8 days September, 10 days. < '( tober, 8 days November December Discharge in Second-feet. Maximum. The year.. 1910 January February March April May June Minimum. Mean. KilO 18000 10200 27000 5680 14100 10300 8510 1510 1580 1010 738 1340 724 Run-off. Second-feet per square mile. Depth, in inches. Accuracy. 20300 2910 8510 2190 4970 11000 3260 4480 738 663 718 2220 5160 4370 15600 15700 86.30 31700 6940 3730 608 326 278 264 391 7380 450 8:360 12200 17800 7430 6290 7780 910 456 1050 40(iO 3150 5.S30 9000 3230 10500 IS.'iO ()020 3940 3.89 .557 1.63 .420 .952 2.11 .625 .858 .141 .127 .138 .425 .837 2.99 3.01 1.65 6.07 1.33 .715 .116 .062 .053 .051 .075 1.41 .086 1.60 2.34 3.41 1.42 1.20 1.49 .174 .087 .201 .778 .603 1.12 1.72 .619 2.01 .354 1.15 .755 4.48 .58 1.88 .47 1.10 2.35 .72 .99 .16 .15 .15 .49 13.52 .96 3.22 3.47 1.84 7.00 1.48 82 .13 .07 .06 .06 19.20 .10 1.67 2.70 3.80 1.64 1.34 l.,2 .20 .10 .23 .87 .70 15.07 1.98 .64 2.32 .40 1.33 .84 103 SiroAL Creek near Breese, 111. This station is located at the B. & 0. S. W. Eailroad bridge, about one and one-half miles east of Bj'oese, 111. It was established Nov. 5, 1909, for the purpose of obtaining- data for use in studying problems of drainage, flood control, water supply, and storage, and also to obtain general statistical and comparative data. Beaver creek is tributary on the left bank about three miles below the section. The total drainage area above the gaging station is about 760 square miles. The intake of the pumping station of the water supply system of Breese is about one-fourth mile q,bove the gaging section. The datum of the gage has remained unchanged since its installation; the records are accurate and reliable. The creek is fed by springs and has not been known to go dry at this point. The flood of 1907 reached a height of al)out twenty-two feet on the present gage datum. Kaskaskia River. Discliarge Measurements of Shoal Creeh near Breese, III.,, for 1909 and 1910. Date. Hydrographer. Width- Feet. Area of section— Sq It. Mean velocity —Ft. per sec. height- Feet. Dls charge- Sec, ft. 1909 October November December 1910 March May May May May June June H. J. Jackson H. J. Jackson H.J Jackson H. J. Jackson C. T. Bailey.. C. T. Bailey.. C. T. Bailey.. C. T. BaUey.. C.T.Bailey.. C. T. Bailey.- 59 126 60 136 90 74 70 62 1 1.55 1 1278 2.12 102 1.63 63 1.84 98 2.76 2440 1.67 1440 2.41 863 2.25 195 1.98 143 1.94 1.77 I 15.93 I 2.54 i 1.80 I 2.40 17.36 I 17.12 11.85 3.95 3.24 96 2716 16G 116 270 4080 3470 1940 i387 278 104 Kaskaskia Eiver. Daily Gage Height in Feet of Shoal Creek near Breese, III, for 1909 and 1910. 1909. Dav. i Nov. Dec. 2.6 2.2 o 2.5 2.2 :; 1.7 1.6 1.7 2.6 11.5 7.5 3.3 2.9 13.55 15.5 15.1 15.8 16.4 16.1 15.4 8.5 5.2 6.5 9.7 11.1 7.9 4.6 3.5 2.9 2.9 1 '\. 2.5 2.95 7 3.2 2.9 Q 2.3 2.25 3.2 5.6 lO 12.9 U 14.5 i:; ._ 11.5 8.95 6.5 10 5.7 5.2 oo 4.15 ou on 2.8 Ql Gage heights Dec. 8, 9, 10, 23 and 30 wore alTected by ice conditions 105 KaSKASKIA IilVEK. Daihj Gage II eight Feet of Shoal Creek 1909 and 1910. near Breese, III., for 1910. Day. Jan. Feb. Mar. Apr. May. June. 3.4 3 9 4.2 5.0 6.7 8.4 6.6 0.4 3.85 3.4 3.2 14.4 16.0 16.9 17.1 17.9 17.3 16.6 16.65 16.3 12.2 7.1 5.2 3.9 3.5 3.7 4.1 3.9 3.7 3.0 2.7 2.3 2.2 5.15 4.9 3.8 2.9 2.6 2.3 2.2 2 15 2.1 2.05 2.0 2.25 2.8 3.7 3.2 2.4 2.2 2.4 2.7 3.8 3.7 2.85 3.2 7.8 16.4 17.6 18.9 19.0 18.1 16.6 11.4 7.5 5.3 4.0 3.6 2.9 2.55 2.3 2.25 2.15 2.1 2.05 2.0 2.0 1.95 1.9 1 .95 1.95 1.9 1.9 1.85 1.85 l.S 1.8 1.75 1.75 1.7 1.7 1.7 1.65 1.65 3.1_ 5.15 2.8 1.85 2.6 8.2 13.4 14.8 13.55 7.15 4 3 2 2 2 2 2 2.7 2.5 2.25 2.2 2.15 7.8 13.3 12.1 10.4 7.2 8.0 10.6 7.2 5.1 4.2 8.1 12.4 7.2 5.2 2.9 2.6 2.45 2.25 2.1 3.2 14.0 15.8 16.3 17.1 17.85 17.5 10.5 8.2 12.5 6.2 5.1 3.0 5.2 13.7 14.5 7.4 4.5 3.7 4.0 3.2 2.6 2.3 2.0 3.2 5.3 6.4 2.3 2.15 7.7 9.0 4.7 2.1 1.9 IS 1.85 2.9 6.1 3.2 2.0 Gage heights Jan. 1-19 were affected by ice conditions, and discharges were not estimated. 106 Kaskaskia Eiver. Daily Discharge of Shoal Creek near Breese, III., for 1909 and 1910. Day. Nov. Dec. 1 185 137 173 A 137 90 84 90 185 1800 1020 283 222 2240 2710 2600 2810 3050 2920 2680 1200 606 840 1440 1720 1090 502 315 222 222 197 173 « 228 267 C 1180 130 in fl20 |267 12 f678 2100 ■t A ; 2450 1800 Ifi 1290 840 TO 696 606 on 500 400 99 300 240 94 220 200 9C 170 130 9Q 100 29 80 70 31 70 31138 14937 Discharge Dec. 8-10, Dec. 20-31 was estimated from gage heights and climatological and other data. 107 Kaskaskia River. Daily Discharge of Shoal Creek near Breese, 111., for 1909 and 1910. 1910. Day. an Feb. Mar. Apr. May. June. J 197 149 137 597 553 366 222 185 149 137 132 126 120 115 143 4290 5970 6100 4930 3160 1780 1020 624 400 332 222 179 . 149 143 1.'^2 90 90 90 87 87 251 597 209 149 126 98 98 98 102 185 1150 2210 2520 2240 957 434 251 185 149 161 155 173 197 173 143 137 132 1070 2190 1920 1580 966 1110 1620 966 588 434 1130 1990 966 606 222 185 167 143 126 267 2340 2810 3000 3690 4600 4170 1600 1150 2010 786 2 588 3 235 4 606 5 2270 6 2450 7... . 1000 s 485 9 349 10 400 1] 267 12.. 185 13 149 14 115 15 . 267 16 209 1 126 624 17 349 267 161 137 161 197 366 349 216 267 1070 3050 120 115 115 110 106 110 110 106 106 102 102 98 98 94 94 822 18 149 19 132 20 3200 3000 1940 948 606 383 315 349 417 383 349 235 1060 21 1300 22 519 23 126 24 106 25 98 26 102 27 28 29 : 222 768 267 30 115 31 Total 12125 10127 31143 13455 43885 16562 108 Kaskaskia River. T^at'uiff Table for Shoal Creek near Breese, III., for 1909 and 1910. Gage height- Feet. l.OD...- 1.10.... 1.20.... 1.30.-.- 1.^0.... l.oO.... 1.60.-.. 1.70.... 1.80..-. 1.90..-. 2.00.... 2.10...- 2.20.... 2.30...- 2.40.... 2.50.... 2.60.... 2.70.--. 2.80..-. 2.90..-. 3.00..-. 3.10-.- 3.20.--. 3.30---. 3.40--- 3..50--. 3.60--. 3.70... 3. SO... 3.90... 4.00... 4-10-.- 4.20--- 4.30--- 4.40--- 4..50--- 4.60-.. 4.70... 4. SO-.. 4.90... 5.00... 5.10... 5.20... 5.30... 5.40... 5.50... Dis- charge- Sec, ft. S4 90- 98 106 115 126 137 149 161 173 185 197 209 222 235 251 267 283 299 315 332 349 366 383 400 417 434 451 468 48.5 502 519 .536 553 570 588 606 624 642 6(50 Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 5.60 678 5.70 696 5.80 714 5.90 732 6.00 750 6.10 768 6.20 786 6.30 804 6.40 822 6.50 840 6.60 858 6.70 876 6.80 894 6.90 912 7.00 930 7.10 948 7.20 966 7.30 984 7.40 1002 7 50 1020 7.60 1038 7 70 1056 7.80 1074 7 90 1092 8 00 1110 8.10 1129 8.20 1148 8.30 1167 8.40 1186 8.50 1205 8.60 1224 8.70 1243 8.80 1262 8.90 1281 9.00 1300 9.10 1320 9 20 1340 9 30 1360 9.40 1380 9.50 1400 9.60 1420 9.70 1440 9.80 1460 9.90 1480 10.00 1500 10.10 1520 10.20 1540 10.30 1560 10.40 1580 10.50 1600 10.60 1620 10.70 1640 10.80 1660 10.90 1680 11.00 1700 11.10 1720 11.20 1740 11.30 1760 11.40 1780 11.50 1800 11 60 1820 11.70 *- 1840 11.80 I860 11.90 1880 12.00-.--: 1900 12.10 1922 12.20 1944 12.30 1966 12.40 1988 12.50... 2010 12.60 2032 12.70 2054 12.80 2076 12 90 209S 13.00 2120 13.10 2142 13.20 2164 13.30 2186 13.40.. 220S 13.50 2230 13.60 2252 13.70 2274 13.80 2296 13.90 2318 14.00 2340 14.10 2362 14.20 2384 14.30 2406 14.40 2428 14.50 2450 14.60 2474 14.70 2498 14.80 2522 14.90 2546 15.00 2570 15.10 2596 15.20 2622 15.30 2650 15.40 2678 15.50 270S 15.60 2740 15.70 2774 15.80 2808 15.90 2844 16.00 2880 16.10 2920 16.20 2960 16.30 3000 16.40 3050 16.50 3100 16.60 3160 16.70 3240 16.80 3340 16.90 3450 17.00 3570 17.10 3690 17.20 3810 17.30 3930 17.40 4050 17.50 4170 17.60 4290 17.70 4410 17.80 4540 17.90 4670 18.00 4800 18.10 4930 18.20 5060 18.30 5190 18.40 5320 18.50 5450 18.60 5580 18.70 5710 18.80 5840 18.90 5970 19.00 6100 NOTE —The above lable is not applicable for ice or obstructed channel conditions. It is based on 10 discharge measurenicnts made during 1909-1910, and is fairly well defined between gage heights 1.7 feet and 17.3 feet. 109 Kaiska.skia 1\jve]{. Monthly Discharge of Shoal Creek near Brcese, III., for IDOi) and V.)10. (Drainage area 760 square miles.") Month. Discharge in Second-feet. Maximum. Minimum. Mean. Run-oir. Second -feet Depth per . • . u square mile. | ^ mches. Accuracy, 1909 November 5-30. December 1910 January 20-31 . . February March April May June 3050 84 3050 6100 2520 4600 2450 115 94 126 1200 482 1010 362 1000 448 1420 552 1.58 .634 1.33 .476 1.32 .590 1.87 • .726 1..53 .73 .59 .50 1.52 .66 2.16 .81 Silver Creek near Lebaxox, III. This station is located at the highway bridge at Wrights Crossing, about two miles west of Lebanon, 111., between the B. & 0. S. W. Rail- road and the East St. Louis & Suburban Railway liridges across Silver creek. It was established March 3, 1908, for the purpose of colkK-ting data for use in studying drainage and flood control ])roblenis. and to obtain general statistical and comparative data. There are no tributaries near the gaging station. This stream is a tributary of the Kaskaskia river, emptying into it about one mile above the gaging station at Xew Athens, 111. Tbe drainage area above the station is about 335 square miles. The datum of the gage has remained unchanged since its installation. From March 3, 1908, to May 10, 1909, this gage was so situated that two feet was the lowest obtainable reading, and the gage reader noted that the stream was dry whenever the water surface was below two feet. Upon inquiry he stated that the stream was dry only one week during 1908. Therefore, where gage heights have been niarked ''Dry" by the gage reader during this period, this note was inserted : , "Dry under gage, can not obtain gage height of water surface." The position of the gage was changed on May 10, 1909, so as to obviate this difficulty. Except as noted above the records are accurate and reliable. 110 Kaskaskia Eiver. Discharge Measurements of Silver Creeh near Lebanon, III, for 1908 to 1910. Date. Hj'drographer. 1908 March May July 1909 February March March May May August November November November 1910 March May May 21 R. J. Tavlor. 2 R.J. Tavlor. 9 R.J. Taylor. R..T. Tavlor.-.. Wm.M. 'O'Neill. Wm. M. O'Neill. H.J.Jackson. .. H.J.Jackson... H.J.Jackson.. . H.J.Jackson. .. H.J.Jackson.. . H.J.Jackson.. . H.J. Jackson. C. T. Bailev.. C.T. Bailev. - Width- Feet. Area of section— Sq. ft. 38 41 35 378 46 50 32 62 24 26 360 53 31 103 53 111 130 107 1614 85 254 90 434 70 77 1324 347 100 579 Mean velocity —Ft. per sec. Gage height- Feet. 0.64 0.82 0.54 1.09 0.97 1.24 0.38 1.75 0.08 .07 .85 1.18 0.42 1.64 1.18 Dis- charge- Sec, ft. 3.5 4.25 3.5 12.56 5.34 6.66 *2.77 10.03 2.24 2.28 12.04 8.54 3.00 11.75 9.24 71 107 58 1757 180 314 34 761 6 6 1124 410 42 t947 466 * Not at regular section. . ^ ^ , , a xr ti t„v.o9i loin t Increase discharge 53 cfs. for flow m flood channels. A. H. H. June 21, 1910. Ill Kaskaskia Eiver. Daily Gage Heiglit in Feet of Silver Creeh near Lebanon, III., for 190S to 1910. 1908. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 4.5 4.4 4.3 4.0 5.1 4.4 ""l"2 13.9 15.5 15.9 15.5 14.1 9.8 5.8 7.2 6.2 4.9 ""'is'.h' 6.0 5.3 4.1 11.0 12.2 "'i2!4' 11.8 8.6 11.0 7.8 7.0 3.7 3.4 3.2 5.4 6.2 6.0 ""K.2 6.0 7.8 5.0 3.6 4.2 ""ih'.s 7.5 5.0 3.2 2.8 2.6 """s's' 2.7 4.5 3.2 2.5 2.0 ""'s'g' 2.8 2.5 2.0 2.3 2.5 2.0 3 2 2 2 7 3 2.0 4 5 6 4.0 4.3 5.0 10.4 11.0 11.0 2.5 4.0 5.4 3.5 2.7 2.3 ""2.0 2.0 2.3 3.0 4.0 5.2 3.9 6.6 5.8 "K.o 4.7 4.2 3.0 2.0 2.0 7 8 9 10 11 12 13 5.3 4.2 4.2 4.8 4.8 4.8 ■ 14 ! 15 1 16 ::::::i 17 1 18 19 20 4.5 3.9 3.5 5.2 11.1 11.3 ""i2!5' 12.1 11.7 8.8 2.7 4.2 5.1 3.6 3.6 3.6 21 3.5 22 23 3.4 3.3 3.3 3.2 3.1 3.5 24 26 26 27 3.8 7.5 6.5 3.5 2.6 28 29 30 3.7 4.3 31 3.4 1 For explanation of missing gage heights from Aug. 16, 1908, to Nov. 29, and from Dec. 3 to Jan. 20, 1909, see description of station. 112 KaSKASKIA ElVEK. Daily Gage Height in Feet of Silver Creek near Lebanon, III., for 1908 to 1910. 1909. Day. .Tan. Feb. Mai . .\pr. May. June July. Aug. Sept. Oct. Nov. Dec. 2.7 4.0 4.2 .5.0 4. .5 3.2 4.0 4.7 10.4 10.7 8.5 6.4 11.2 12.1 12.2 12.7 12.5 12.5 11.2 10.0 9. .3 8.7 5.0 3.6 3.2 2.7 9.5 12.6 13.0 12.8 11.0 9.2 7.8 6.7 5.0 3.6 5.4 8.7 6.5 0-.8 3.7 3.5 3.3 3.1 3.1 3.2 3.0 2.8 7.1 5.6 4.4 3.5 3.0 12.3 13.5 13.0 12.5 9.8 11.3 12.8 14.0 13.8 12.5 8.2 4.3 3.8 3.6 3.3 3.1 '.3 '6' 3.0 3.0 2.9 2.9 2.8 10.0 8.5 8.0 8.7 10.4 11.0 4.1 3.3 3.0 3.0 2.7 2"7 3.6 5 . 5 5.0 4.3 3.0 5.1 7.6 8.8 10.4 11.5 11.7 10.9 10.4 10.0 8.2 4.5 3.7 3.4 2.5 2.5 2.5 2.5 2A 2.4 3.5 3.2 3.0 2.7 2.5 4.1 3.5 3.0 2.3 1.8 4.3 6.5 11.2 13.6 14.0 12.0 'i2!2' 12.6 8.5 6.2 3.5 3.1 2.8 2.5 2.3 2.0 1.9 1.7 io.o 8.7 5.1 2.9 2.5 2.3 2.1 2.0 2.0 1.9 1.7 1.7 i'e" 1.6 1.5 1.5 1.5 4.5 2.0 1.5 1.5 1.4 1.2 1.0 1.0 1.0 0.9 0.8 0.7 0.7 0.7 0.7 0.7 0.6 0.6 0.8 0.9 0.9 1.2 1.9 1.9 1.7 1.7 1.5 1.0 1.0 1.0 1.2 6.0 5.1 3.5 2.3 1.7 1.5 1.0 1.0 0.9 1.0 0.9 0.8 0.7 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.55 0.55 0.5 0.55 0.6 0.7 8.8 10.0 9.9 10.0 2.2 2.2 2.2 2.2 2.2 2.2 2.65 5.15 8.6 9.0 5.75 5.0 9.2 10.3 12.9 12.6 12.1 11.95 11.9 10.35 5.4 4.2 9.0 7.4 5.1 4.2 3.7 3.5 3.3 3.2 3.1 3.15 3.2 3.15 3.3 3.35 3.5 3.45 3.45 3.45 3.0 5.4 9.9 10.7 11.0 10.4 6.9 6.1 5.7 4.5 3.8 3.25 3.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 2.9 (lage heights Dec. 17-31 were read to top of ice. For explanation of mis.sing gage heights Jan. 1-20 description of station. 113 Kaskaskia Eivek. Daily Gage Height in Feet of Silver Creek near Lehanon, III., for 1908 to 1910. 1910. Day. Jan. - Feb. Mar. Apr. May. June. 1 3.1 5.4 5.4 6.2 7.0 8.0 7.9 7.7 6.9 4.7 4.9 7.1 11.2 13.9 14.3 13.2 12.8 12.2 11.9 12.3 11.9 11.5 8.7 5.8 4.5 4.5 4.5 4.5 4.6 4.3 4.0 3.6 3.75 4.0 5.8 6.5 4.7 3.9 3.7 3.6 3.6 3.55 3.5 3.5 3.5 4.1 5.1 7.6 6.1 5.3 4.9 4.4 4.5 4.9 4.9 4.5 4.5 11.0 11.9 14.6 13.8 13.0 12.3 11.6 8.6 5.6 4.7 4.2 3.9 3.7 3.6 3.5 3.4 3.25 3.2 3.2 3.2 3.2 3.2 3.15 3.1 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.8 2.8 2.7 2.6 2.6 2.7 3.6 4.9 4.8 3.8 3.1 2.9 2.7 2.9 2.8 2.7 3.6 9.6 10.3 10.6 8.1 5.0 4.0 3.5 3.3 3.2 3.1 3.1 3.5 3.4 3.4 3.2 3.0 2.9 5.0 8.7 8.2 4.5 5.1 8.6 8.1 5.4 4.2 5.5 6.0 5.5 4.7 3.2 3.1 3.2 3.1 2.9 2.7 2.6 11.6 13.2 13.8 12.7 12.0 9.3 7.4 5.] 4.6 3.8 2 3.0 3 2.8 4 2.8 5 . ... 9.5 6 11.0 7 12.0 8 11.5 9 8.1 10 9.5 11 6.4 12 . . 4.8 13 3.4 14 3.05 15 3.1 16 4.3 17 4.65 18 3.2 19 2.9 20 .. 2.7 21 2.9 22 3.9 23 2.9 24 2.5 25 2.35 26 2.5 27 2.6 28.. . 4.7 29 3.25 30 2.55 31.. Gage heights Jan. 1-10 are to the top of ice. -8 S W 114 Kaskaskia River. Dailij Discharge of Silver Creek near Lebanon, lU., for 190S to 1910. 1908. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 122 116 164 116 74 1 9r? 10 49 2 59 49 187 253 235 203 171 235 405 157 69 104 459 814 375 157 49 33 26 45 64 29 122 49 23 10 269 528 33 10 17 23 23 23 92 187 64 29 17 14 10 10 17 41 92 171 100 29 104 164 69 69 69 74 80 375 10 10 8 8 86 280 219 188 157 136 104 41 10 10 29 3 110 • 110 4 92 92 92 110 157 730 860 860 520 179 104 104 143 143 143 132 122 86 64 171 885 945 1310 1680 1320 1090 516 104 3080 4800 5240 4800 3300 2240 1190 639 219 345 253 150 220 289 236 179 98 860 1400 1490 1580 1140 492 860 405 325 200 5 . . 6 8 9. 10 11.. 12 13-. 14 15.. 16 17... 18 19 20 21 64 62 59 54 54 49 45 64 69 74 110 22 23 24 25 26 27 28 29 280 64 23 30 31 59 Total. 704 12998 36523 5236 2363 1277 59 78 Discharges on those days that the gage was not read were obtained by interpolation. 115 KaSKASKIA ElVER. Daily Discharge of Silver Creeh near Lebanon, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. Juno July. Aug. Sept . Oct. Noy Dec 2 3 4 5 6 7 9 10 11 12 13 14 15 16 17 18 19 20 21 29 22 92 23 104 24 104 25 104 26 74 27 33 28 69 29 122 30 447 31 302 Total. 1480 17243 157 122 49 92 136 375 314 253 179 157 136 104 64 397 730 792 480 271 915 1320 1360 1400 1880 1680 1680 915 665 620 504 157 69 49 29 314 600 1780 2180 1980 860 564 484 405 298 108 128 148 167 187 504 280 219 146 74 64 54 13243 45 45 49 45 41 33 335 203 116 64 52 41 1490 2680 2180 1680 639 646 652 945 1980 3190 2980 1680 1060 447 110 80 69 54 23631 45 43 41 41 41 37 37 33 349 665 480 425 504 730 860 536 211 98 54 41 41 29 29 29 69 195 157 110 41 52 64 164 385 516 730 1010 1050 1090 836 730 665 447 122 146 74 59 23 23 23 23 22 20 20 64 49 41 29 26 23 98 64 8572 41 17 58 110 280 915 2780 3190 1240 1320 1400 1780 480 253 64 45 39 33 23 17 10 8 6 336 665 504 164 37 23 17 15862 4 4 4 122 10 4 4 3 2 1 1 1 0.7 .4 .2 .2 .2 .2 .2 .1 .1 2.0 8 8 6 6 4 1 1 1 2 235 164 64 17 6 4 1 1 0.7 516 665 652 665 626 244 157 98 49 33 23 17 17 17 14 14 14 14 14 14 28 168 492 540 215 157 564 712 208d 1780 1320 1220 1190 721 187 104 540 365 164 104 74 64 54 49 243.3 534.5 3782.55 12976 45 47 49 47 54 56 64 60 50 40 35 187 652 792 860 730 250 200 150 100 80 60 40 30 20 20 20 20 15 15 15 4803 Discharge on those days ^vhen the gage was not read was obtained by interpolation. Discharge Dec. 8-11, 17-31 was estimated from gage height, climatological and other data. 116 Kaskaskia Eiver. Daily Discharge of Silver Creeh near Lebanon, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 20 100 100 150 200 300 300 250 200 120 150 335 915 3080 3500 2380 1980 1400 1190 1490 1190 1010 504 219 122 122 122 122 129 110 92 69 77 92 219 280 136 86 74 69 69 66 64 64 64 98 164 385 244 179 150 116 122 150 150 122 122 860 1190 3820 2980 2180 1490 1050 492 203 136 104 86 74 69 64 59 52 49 49 49^ 49 49 47 45 41 41 41 41 37 37 37 33 33 29 26 26 29 69 150 143 80 45 37 29 37 33 29 41 37 157 504 ■ 447 122 164 492 436 187 104 195 235 ^Q^ 80 2 . 41 3 33 4 33 5 600 6 860 1240 8 1010 9 436 10 600 11 271 12 143 13 59 14 43 15 . 69 i-'^fi 45 16 613 712 770 436 157 92 64 54 49 45 45 64 59 59 49 49 45 49 45 37 29 26 1050 2380 2980 1880 1240 576 365 164 129 110 \^"/...v....v.. '. '.'. 132 49 19 37 20 29 21 37 22 86 23 37 24.. 23 25 18 26.. 23 27 26 28 .. 136 29 52 30 . 24 31 Total 21902 5481 13578 4099 14496 6313 Discharge Jan. 1-10 was estimated from gage height, climatological and other data. 117 Kaskaskia River. Bating Table for Silver Creek near Lebanon, III., for 1908 to 1910. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge — Sec. ft. Gage height — Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 00 4.10 98 8.10 8.20 8.30 8.40 8.50 8.60 8.70 8.80 8.90 9.00 9.10 9.20 9.30 9 40 436 447 458 469 480 492 504 516 528 540 552 564 576 ; . 588 12.10 12.20 12.30 12.40 12.50 12.60 12.70 12.80 12 90 13.00 13.10 13.20 13.30 13.40 13.50 13.60 13.70 13.80 13 90 1320 10 4 20 104 .. - 1400 20 4 30 110 1490 .30 40 4 40 . 116 1580 4 50 122 1680 50 --- 4.60 4.70 4 80 129 136 143 1780 60 1 1880 70 . - 2 1980 80 . - 4 4 90 150 2080 .90 1 00 7 1 5 00 157 2180 5.10 5 20-. . . 164 171 2280 1 10 1.5 2 2380 1 ''O 5.30 5 40 179 187 2480 1 "^0 ... 2 5 2580 1.40 1.50 1.60 1.70 1 80 3.0 4 5 6 . 7 5.50 5.60 5.70 5.80 5.90 6.00 6.10 6.20 6.30 6.40 6.50 6.60 6.70 6.80 6.90 7.00 7.10 7.20 7.30 7.40 7.50..«-.. 7.60 7.70 7. SO 7.90 8.00 195 203 211 219 227 235 244 253 262 271 280 289 298 307 316 325 335 345 355 365 375 385 395 405 415 425 9.50 9 60 600 .... 613 2680 2780 9.70....... 9.80 9.90 10.00 10 10 626 639 652 665 679 2880 2980 3085 1 90 8 14.00 14.10 14.20 14.30 14.40 14.50 14.60 14.70 14.80 14.90 15.00 15.10 15 20 3190 2.00 2.10 2 20 10 12 14 17 3295 3400 - - 3505 10.20 10 30 695 712 2 30 10.40 10. .50 10 60 730 750 770 3610 2.40 2 50 20 23 26 29 33 37 41 45 49 54 59 3715 3820 2.60 2 70 10.70 10 80 792 814 3925 4030 2.80 2.90 3.00 3 10 10.90 11.00 11.10 11.20 11.30 11.40 11.50 11.60 11.70 11.80 11.90 12.00 836 860 885 915 945 975 1010 1050 1090 1140 1190 1240 4040 4250 4360 4470 3.20 3.30 3 40 15.30 15.40 15.50 15.60 15.70 15.80...... 15.90 16.00 4580 4690 4800 3.50 3 60 64 69 4910 5020 3.70 3.80 3.90 4.00 74 80 86 92 5130 5240 5350 Note— The above table is not applicable for ice or obstructed channel conditions. It is based on 15 discharge measurements made during 1908-1910, and is fairly well defined between gage heights 2.7 feet and 12.6 feet. 118 KaSKASKIA ElVEIf. Monthly Discharge of Silver Creeh near Lebanon, III, for 1908 to 1910. Discharge in Second-feet. Run-otl. Month. Maximum. Minimum. Feet. Second-feet per square mile. Depth in inches. Acciu-acy. 1908 March 21-31 110 1680 5240 814 375 280 14 64 98 10 10 64.0 433 1180 175 76.2 85.1 .191 1.29 3.52 .522 .227 .254 .08 1.44 4.06 .58 .26 .14 B B May C B July B C ' 1909 January 21-31 447 1880 2180 3190 860 1090 3190 122 235 665 2080 860 29 49 29 33 29 20 6 .1 .1 .00 14 0.00 135 616 427 788 196 286 512 7.85 17.8 122 433 155 .403 1.84 1.27 2.35 .585 .854 1.53 .023 .053 .364 1.29 .463 .16 1.92 1.46 2.62 :S 1.76 .03 .06 .42 1.44 .53 c B March B April B Mav B B July B C September C C B December C 1910 3500 1190 3820 770 2980 1240 707 196 438 137 468 210 2.11 .585 . 1.31 .409 1.40 .627 2.43 .61 1.51 .46 1.61 .70 C 64 33 26 2<) IS B March B April B May B B 119 LITTLE WABASH EIYEE. Skillet Fokk River near Wayxe City, III. This station is located at the Southern Eailwav bridge, al)oiit one mile east of Wayne City, 111. It was established Aug. Td, 1908, for the purpose of obtaining data for use in studying problems of drainage and flood control, and also to obtain general statistical and comparative data. Horse creek is tributary on the right bank about four miles above the section. The drainage area above the gaging section is about 481 square miles. The gage datum has remained unchanged since its installation and the records are accurate and reliable. . On :\Iarch 11, 1909, the water reached a height of 22.8 feet on the gage. Little Wabash Eiver. I)i.^rJiarr/c Measurements of Sl'iUet Fori- Fiver near Wayne City, III., for 1908 to 1910. Date. Hydrographer. Width- Feet. Area of section — Sq. ft. Mean velocity —Ft. per sec. Gage height- Feet. Dis- charge — Sec. ft. 1908 July 1909 February March November 1910 March March March March March March R.J. Taylor.... R.J. Taylor Wm. M. O'Neill H. J. Jackson. . . H. J. Jackson. . . H. J. Jackson. . , H. J.Jackson... H. J.Jackson. . . H. J Jackson. . . H. J Jackson. . . 19.5 136 fi48 24 652 - 652 138 113 92 84 36 0.03 (a)2.2 1147 1.04 12.36 5137 1.61 20.75 45 .08 (b)2.54 4975 1.22 (c)20.72 5004 1.29 20.72 1049 0.93 11.90 590 0.73 8.12 287 0.77 5.26 211 0.74 4.55 1189 8264 4 6050 6470 980 432 222 157 (a) Not at regular section, (b) Not at regular section, (c) Drifts around trestle bents reduced flow. 120 Little Wabash River. Daily Gage Height in Feet of Skillet Fork River near Wayne City, III., for 1908 to 1910. 1908. Day. Aug. Sept. 1 Oct. Nov. Dee. 1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0- 1.9 1.9 1.9 1.9 1.8 1.8 1.8 1.8 1.8 1.7 1.7 1.6 1.6 1.6 1.7 1.7 1.6 1.9 1.8 1.8 1.7 1.6 1.6 1.7 1.9 1.7 1.9 ■ 1.8 1.6 1.7 1.8 1.9 1.8 1.8 1.7 1.6 1.7 1.8 1.9 1.8 1.6 1.7 1.9 1.8 1.6 1.5 1.7 1.8 1.6 1.7 1.8 2.0 1.9 1.8 1.6 1.9 1.7 1.8 1.9 2.0 1.8 1.7 1.9 2.0 1.9 1.8 1.7 1.6 1.8 1.9 lis 1.8 1.7 1.9 2.0 1.8 1.6 1.7 2.7 2.5 2.3 2.4 2.2 2.1 2.1 2.2 2.3 2.4 1.9 1.8 1.7 1.9 2.1 1.9 1.8 2.0 1.8 2.1 2.0 2 3 4 5 6 8 9 10 11 12 13 14 15 16 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.0 2.0 2 17 18 19 20 2] 2:0 22 ■ ■■ ^3 2.2 2.0 1.9 2.0 2.0 2.0 24 25 26 27 28 29 30 1.8 31 2.1 121 Little Wabash River. Daily Gage Height in Feet of Skillet Forh Kiver near Wayne City, III., for 190S to 1910. Day. ""■ Feb. Mar. Apr. May. June. .July. Aug. Sept. Oct. Nov. Dec. 1 2.1 2.7 5.0 2.8 3.2 3.4 3.9 8.2 2.0 2.4 2.6 2.0 2 2.1 2.6 4.1 2.6 2.8 3.0 3.8 3.2 2.1 2.3 2.7 2.8 3 2.1 2.8 3.5 2.4 2.7 4.2 3.6 3.1 2.2 2.3 2.7 2.7 4 2.1 2.7 3.2 2.6 2.6 11.2 3.4 3.0 2.1 2.2 2.8 2.7 6 2.2 2.6 3.2 2.8 2.8 14.1 3.0 2.8 2.1 2.2 2.8 2.7 6 2.2 2.7 2.6 2.7 2.6 16.3 2.4 2.6 1.9 2.2 2.7 2.85 7 2.1 3.1 3.1 4.0 2.7 7.5 2.4 2.9 1.9 2.2 2.6 2.9 8 2.0 4 2 3.6 5.6 2.8 4.5 2.4 2.7 2.0 2.1 2.6 2.9 9 2.1 4.2 3.1 7.7 2.9 3.3 3.3 2.5 4.2 2.0 2.6 3.0 10 2.0 4.9 21.1 5.6 3.0 3.2 3.9 2.5 4.9 2.0 2.55 3.1 11 2.1 4.9 21.8 4.8 3.2 3.0 4.2 2.4 3.5 2.0 2.55 3.15 12 2.2 4.6 21.3 4.2 3.6 2.9 9.2 2.3 3.0 1.9 5.65 3.6 13 2.2 4.9 20.6 5.6 4.0 6.8 9.5 2.3. 3.1 1.9 8.15 17.6 14 2.2 8.5 19.6 16.5 4.8 8.5 10.3 2.2 2.8 1.9 8.3 18.8 15 2.3 11.6 12.0 ]9.6 8.6 7.8 13.5 2.1 2.6 2.0 5.8 18.7 16 2.3 17.4 5.6 19.0 8.4 3.6 4.1 2.2 2.5 2.0 5.85 18.0 17 2.0 9.3 4.1 18.2 6.2 5.4 3.7 2.2 2.4 2.0 9.4 13 3 18 2.1 7.5 3.5 12.2 3.5 4.3 3.5 2.2 2.3 2.1 10.9 6.7 19 2.2 7.5 3.1 5.2 3.4 6.8 2.9 2.1 2.3 2.1 Sf.5 5.0 20 2.2 18.4 2.9 12.4 2.8 4.3 3.0 2.1 2.3 4.1 5.4 4.7 21 2.9 17.2 2.6 18.3 2.5 2.6 3.6 2.0 2.4 4.2 3.9 3.55 22 2.8 13.0 2.9 19.0 2.3 2.8 3.1 2.0 2.9 4.7 3.4 3.0 23 2.9 18.2 2.6 19.2 2.0 2.6 2.9 2.1 5.1 3.2 4.85 2.9 24 2.9 20.6 2.5 18.3 2.5 6.4 2.7 2.2 5.7 5.2 10.3 2.8 25 2.8 20.3 2.7 17.4 2.5 4.6 2.6 2.1 3.7 4.7 10.9 2.7 26 2.9 18.0 2.8 11.3 2.5 4.5 2.5 2.2 3.0 3.3 5.8 2.5 27 2.7 13.0 2.7 8.5 11.2 4.4 2.5 2.2 2.8 3.1 4.3 2.55 2S 2.6 7.1 5.2 3.2 14.1 4.6 2.4 2.0 2.7 2.8 3.5 2.5 29 2.9 3.7 2.9 6.6 3.9 2.5 1.9 2 5 2.7 3.1 2.45 30 2.0 3.1 3.3 6.3 4.0 6.5 1.9 2.4 2.6 3.0 2.4 31 2.9 2.8 6.4 7.9 1.9 2.6 2.35 122 Little AV abash Eiver. Daily Gaqc U eight in. Feet of Shillet Fork River near Wayne City, Til, for 1908 to 1910. 1910. 7.. 8.. 9.. 10.. 11.. 12. 13. 14. 15- 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. Day. Feb. Mar. Apr. 1 May. June. 20.6 2.55 5.3 2.6 20.7 2.55 3.6 2.5 20.4 2.7 3.1 2.5 19.9 2.75 4.2 2.45 18.9 2.65 3.5 2.4 14.0 3.0 3.2 2.7 7 6 3.0 2.9 3.2 5.6 2.95 4.9 3.1 4.55 2.9 5.3 2.9 3.95 2.85 4.2 2.8 3 7 2.8 3.7 2.55 3.2 2.75 ■ 3.8 2.55 3 1 2.8 5.6 2.5 3.0 2.8 5.0 2.5 2 95 2.7 4.7 2.5 2.9 2.8 3.2 2.4 2.8 7.15 3.0 2.4 2 75 5.9 2.7 2.4 2 7 5.25 2.05 2.35 2 75 4.25 2.8 2.35 2 7 3.85 2.7 2.3 2 7 3.5 2.65 2.3 2 65 3a 3.1 2.25 2 65 3.5 9.1 2.25 2 65 4.5 8.1 2.25 2 7 4.7 5.5 2.25 2 7 5.8 3.9 2.25 2 65 6.9 3.6 2.2 2 6 6.3 2.95 2.2 2.6 2.55 5.8 2.8 2 7 2.25 123 Little Wabash Eivek. Daily Discharge of SlcUlet Fork River near Wayne City, III., for 190.S to 1010. 1908. Day. Aug. Sept. Oct. Nov. Dec. J 2,0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 1.7 1.7 1.7 1.7 1.4 1.4 1.4 1.4 1.4 1.2 1.2 1.1 1.1 1.1 1.2 1.2 1.1 1.7 1.4 1.4 1.2 1.1 1.1 1.2 1 .7 1.2 1 .7 1.4 1.1 1.2 1.4 1 .7 1.4 1.4 1 2 IJ 1.2 1.4 1.7 1.4 1.1 1.2 1^4 1.1 1.0 1.2 1.4 1.1 1.2 1.4 2.0 1.7 1.4 1.1 1.7 1.2 1.4 1.7 2.0 1.4 1.2 1.7 2.0 1.7 1.4 1.2 1.1 1.4 1.7 1.2 1.4 1.4 1.2 1.7 2.0 1.4 1.1 1.2 19. 10. 5 2 7 3 3 5 4 . . . .. 2 5 5 2 5 6 3.5 7 5 8 7 9 1 7 10 1 4 11 1.2 12 . . 1 7 13 2 5 14 . . 1 7 15 1 4 16 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 2.5 2.5 2.0 2.0 2.0 2.0 17 . 1 4 18 2 5 19 2.0 20 1 7 21 2 22 2 5 23 3 5 24 2.0 25 . . . 1 7 26 2.0 27 2.0 28 2 29 1.4 30 - ... 2 31 2.5 Total 49.5 47.5 40.6 70.6 80 8 124 Little Wabash Eiver. Daily Discharge of Skillet Forlc Eiver near Wayne City, III., for 190S to 1910. 1909. Day. Jan. Feb Mar. Apr. May. June July. Aug. Sept. Oct. Nov. Dec. 1 2.5 19 190 25 55 70 107 499 2.0 7 14 2.0 2 2.5 14 122 14 25 40 100 55 2.5 5 19 25 3 2.5 25 77 7.0 19 130 85 47 3.5 5 19 19 4 2.5 19 55 14 14 992 70 40 2.5 3.5 25 19 5 3.5 14 55 25 25 1850 40 25 2.5 3.5 25 19 6 3.5 32 14 19 14 2860 7 14 1.7 3.5 19 28 _ 2.5 47 47 115 19 420 7 32 1.7 3.5 14 32 8 2.0 130 85 235 25 152 7 19 2.0 2.5 14 32 9 2.1 130 47 442 32 62 62 10 130 2 14 40 10 2.0 182 6960 235 40 55 107 10 182 2 12 47 11 2.5 182 7760 175 55 40 130 77 2 12 ■ 51 12 3.5 160 7180 130 85 32 630 5 40 1.7 238 85 13 3 5 182 6420 235 115 343 678 5 47 1.7 493 3640 14 3.5 535 5400 2960 175 535 814 3.5 25 1.7 511 4620 15 5.0 1080 1180 5400 547 453 1600 2.5 14 2 250 4520 16 5 3500 235 4800 523 85 122 3.5 10 2 254 3930 17 2.0 646 122 4100 283 220 92 3.5 7 2 662 1560 18 2 5 420 1230 77 137 77 3.5 5 2.5 930 333 19 3 5 420 47 205 70 343 32 2.5 • 5 2.5 535 190 20 3 5 4260 32 1280 25 137 40 2.5 5 122 220 167 21 32 3380 14 4180 10 14 85 2.0 7 130 107 81 22 25 1460 32 4800 5.0 25 47 2.0 32 167 70 40 23 32 4100 14 5000 2.0 14 32 2.5 197 ' 55 178 32 24 32 6420 10 4180 10 303 19 3.5 242 205 814 25 25 25 6110 19 3500 10 160 14 2.5 92 167 930 19 26 32 3930 25 1010 10 152 10 3.5 40 62 250 10 27 19 1460 19 535 992 . 145 10 3.5 . 25 37 137 12 28 14 376 205 55 1850 160 2.0 19 25 77 10 29 32 92 32 323 107 10 1.7 10 19 47 8.5 30 14 47 62 293 115 313 1.7 7 14 40 7 31 32 .25 303 464 1.7 14 6 Total. 349.1 39233 36607 45063 6031 10151 5818 816.1 1236.4 1082.6 6930 19609.5 Year period, 172926.7. 125 Little Wabash Eiver. Daily Discharge of Skillet Forh Eiver near Wayne City, III., for 190S to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 5 10 12 85 115 220 250 216 137 40 19 14 250 3250 3710 3080 2550 2700 3860 3640 1430 814 726 220 167 134 175 242 265 220 160 115 107 92 77 152 257 145 77 58 55 55 51 47 51 47 137 167 212 250 265 387 796 1660 1080 814 431 4440 6320 6420 6530 6220 5700 4700 1810 431 235 156 111 92 55 47 40 36 32 25 22 19 22 19 19 16 16 16 19 19 16 14 14 12 12 12 19 22 16 40 40 36 32 28 25 22 25 25 19 25 382 257 208 134 104 77 47 77 152 167 250 354 293 250 212 85 47 130 77 55 32 182 212 130 92 100 235 190 167 55 40 19 2.2 25 19 16 47 614 487 227 107 85 36 25 19 14 2 10 3 10 4 8 5 7 6 19 7 55 8... 47 9 32 10 25 11... 12 12 12 13 10 14 10 15 10 16 7 17 7 18 7 19 6 20 6 21 5 22. 5 23 4.2 24 ■- 4.2 25... . 4.2 26 4.2 27 4.2 28 3.5 29 3.5 30 4.2 31 Total • 28698 18345 32883 3150 3769,2 356.2 126 Little Wabash Eiver. Bating Table for Shlllet Fork Eiver near Wayne City, III., for for 1908 to 1910. height- Feet. Dis- charge- Sec, ft. Differ- ence- Sec, ft. Gage height— Feet. Dis- Differ- charge— ence— Sec. It. Sec. ft. Gage height — Feet. Dis- Differ- charge— ence— Sec. ft. Sec. ft. 1.00 1.10 1.20 1 30... . 1 1 ".1 .1 .2 .3 .3 .5 1.0 1.6 2 3 4 5 6 7 8 7 8 8 7 8 7 8 8 8 7 8 8 7 8 8 S 8 7 8 7 .s s <» y 10 10 10 10 10 10 11 11 11 11 11 7.30 7.40 7.50 7.60 7.70 7.80 7 90 398 409 420 431 442 453 464 11 11 11 11 11 11 11 12 12 12 12 12 12 12 13 14 14 14 16 16 16 16 16 16 16 16 18 18 18 18 18 18 20 20 20 20 20 21 21 22 22 22 24 24 24 '25 25 25 25 25 25 30 30 30 30 30 30 30 35 35 35 35 35 13.60 13.70 13.80 13 90 1665 1700 1735 1770 35 35 35 40 1 40 14 00... . 1810 40 1 60 14 10 1850 40 1 60 14 20... 1890 40 1 70 1.2 1 4 8 00 475 14 30 1930 40 1 80 8 10 487 14 40... . 1970 40 1.90 2 00 1.7 2 8.20 8 30 499 511 14.50 14 60 2010 2050 40 40 2 10-. - . 2 5 8 40 523 14.70 14 80 ... . 2090 21.30 40 2 20 3 5 8.50 8 60 535 ... . 547 45 2 30... . ... . 5 14 90 2176 45 2 40 7 8.70 8.80 8 90 559 572 586 15 00.. . . 2220 45 2 50. . 10 15 10 2265 45 2.60 14 15.20 15 30 2310 2356 45 2 70. - 19 25 9. GO 9.10 9.20 9.30 9.40 9.50 9 60 600 614 630 646 662 678 694 45 2 80 16 40.. . - 2400 50 2 90. . . . - 32 15 60 2450 50 3.00 • 40 15.60 15.70 15.8a 15 90 2500 2550 2600 2650 ,50 3.10 3.20 3 30. 47 5o 62 50 50 50 3 40 70 77 to 9.70 & 80 710 726 16 00 . . 2700 50 3 .50. 16 10 2750 50 3 60 9.90 10 00... 742 760 16 20 2800 55 3 70. 92 100 16 30 2856 ,55 3.80 10 10 778 16.40 2910 55 3 90 107 10 20 796 16. .50 16 60 2965 3020 5.5 4 00 115 10 30 814 55 4 10 122 130 10 40... 832 16.70..- 16 80 . 3075 3130 55 4 20 10 50 850 60 4 30 137 10 60... . 870 16 90 3190 60 4 40 145 1.52 10.70 10 80 890 910 17 00 . 3250 60 4 50 17.10 17.20 17.30 17.40 17.50 17.60 17.70 17.80 17.90 18 GO 3310 3375 3440 3505 3570 3640 3710 3780 3855 3930 65 4 60 1(50 10 90 930 65 4.70 4 80 167 175 11.00 11,10 11.20 11.30 11.40 11. .50 11.60 11.70 11.80 11.90 12 00 950 971 992 1014 1036 1058 1082 1106 1130 1155 1180 65 65 4.90 182 70 5.00 5.10 5.20 O.30 5 40 ito 197 205 212 220 227 235 70 70 75 75 80 O..50 5 60 18.10 18.20 4010 4095 85 85 5 70 242 2.50 257 18 30 4180 8.5 5. .SO 5 90 12 10 12 20 1205 1230 18 40 4265 85 18.50 18.60 18.70 18 80 4350 4435 4525 4615 85 6 00 2^.5 12 30 12 40 12.55 1280 90 6 10 274 2.s;{ 90 6 20 12. .50 12 60 1310 1340 90 6 30 2*« 18.90 4705 95 6 40 .■{().{ 12.70 12 80 13*0 1400 19 00 48(X) 100 6 50 3i:5 19.10 19 20 4900 5000 100 6 60 12 90 1430 100 6 70 333 343 354 365 376 387 13 (X) 1460 19. .30 19 40 5100 5200 100 6 80 13.10 13.20 13 30 13 hO I 13. lO 1490 1.525 1560 1.595 1630 100 6.90 7.00 7.10 7.20 19. .50 19 60 5300 54(K) 100 100 19.70 19 80 55(K) 5600 100 100 127 Bating Table for Skillet Fork River near Wayne City, 111., for for 1908 to iPlO— Concluded. Gage height- Feet. Dis- charge- See, ft. Diflfer- ence— Sec. ft. Gage height- Feet. Dis- charge — Sec. ft. DilTer- ence— Sec. ft. Gage height- Feet. Dis- DifTer- charge— ence— Sec. ft. Sec. ft. 19 90... . . ... 5700 100 100 105 105 105 105 105 105 20.70 20 80 6530 6635 105 105 110 110 110 115 115 21.40 21..=)0 21.60 21.70 21.80 21.90 22 00 7300 115 20 00 5800 7415 115 20 10 5900 6005 20 90 6740 7530 115 20 20 21.00 21.10 21.20 21 30 6850 6960 7070 7185 7645 115 20 30 6110 7760 120 20 40 6215 7880 120 20 50 6320 8000 20 60 - 6425 The above table is not applicable for ice or obstructed channel conditions. It is based on 11 discharge measurements made during 1908,1909 and 1910, and is fairly well defined between gage heights 2.0 feet and 12.0 feet. Little Waeash Eiver. " Monthly Discharge of Skillet Fork River near Wayne City, III, for 1908 to 1910. (Drainage Area 481 Square Miles.) Month. Discharge in Second-feet. Maximum. Minimum. Mean. Run-off. Second-feet per square mile. Depth in inches. Accuracy. 1908 August 16-31.. September... October November . . . December 1909 January February March April May June July August September . . . October November. . . December The year. 1910 January February March April May June 3.5 2.0 1.7 19 7.0 32 6420 7760 5400 1850 2860 1600 499 242 205 930 4620 7760 3860 6320 6530 382 614 55 2.0 1.1 1.0 1.1 1.2 2.0 14 10 2 14 1.7 1.7 1.7 12 2.0 1.7 3.00 1.58 1.31 2.35 2.61 11. 1400 1180 1500 195 338 188 26. 41. 34. 231 633 482 47 655 12 1060 12 105 2.2 122 3.5 11 .0064 .0033 .0027 .0049 .0054 .023 2.91 2.45 3.12 .405 .703 .391 .055 .086 .073 .480 1.32 1.00 1.93 1.36 2.20 .218 .254 .025 .004 .004 .003 .005 .006 .03 3.03 2.82 3.48 .47 .78 .45 .06 .10 .08 .54 1.52 13.36 2.22 1.42 2.54 .24 .29 .03 12S SANGAMON EIVEE. Description. The drainage basin of the Sangamon river lies wholly within the State of Illinois. The river rises in the southwestern part of Ford county, flows southwest to Decatur in Macon county, thence flows west- ward until near Springfleld, thence it flows northwestward to its junc- tion with Salt creek at the northern boundary line of Menard county, thence it flows westward and empties into the Illinois river at the northern boundary of Cass county. Springfield is about twenty miles southwest of the center of the basin, which is roughly a right triangle in shape, with the mouth of the river opposite the vertical ; the drainage basin lies very nearly in the center of the State. The river is about 180 miles in length, not including bends. The total drainage area is 5,410 square miles. The principal tributaries are Salt creek and South fork. The eastern third of the drainage basin is somewhat undulating and elevated, the rest of the basin is a level prairie. The soil is a very fertile rich black loam, especially adapted for raising corn. There are coal mines in the vicinity of Springfield. The bed and banks of the river are soft and insecure. The slope of the river is small, the elevation of its source is about 700 feet above sea level, its mouth is about 430 feet. There are no forested areas in this drainage basin; what little timl)er there is is in small groves or along the river banks. 'J1ie annual rainfall is about 37 inches. The winter conditions are mild; ice forms to some extent and during severe winters attains con- siderable thickness. Storage possibilities have not been investigated, although, as in the Kaskaskia basin, storage is of considerable interest. On account of the low slope, floods, low water and lack of suitable foundations for dams, there are no opj)ortunities for water power. Owing to the levelness and lowness of the drainage area there is very little ground storage in the basin; high water follows every heavy rain, floods occur frequently and are of considerable duration. The banks of the river being low, large areas are flooded and there are numerous swamp areas in this basin. The drainage of these swamps and the opening up of channels so that flood waters may have an opportunity of returning quickly to the main stream makes the study of flood control and drainage of considerable importance. In some places short 129 sections of the main stream are being straightened in an effort to provide a better channel so that floods will quickly drain off the adjacent land. Any improvement of this nature should tonsider tlie stream as a whole and shouid be commenced at the lower end. The foliowing gaging stations are being maintained in this drainage basin : Sano^amon river near Monticello, 1908, 1909, 1910. Sangamon river at Eiverton, 1908, 1909, 1910. Sangamon river near Oalvford, 1909, 1910. . Sangamon river near Chandlerville, 1908. . South forlv near Tavlorville, 1908, 1909, 1910. Salt creels' near Kenney, 1908, 1909, 1910. SaxGAMOX ElVER XEAR MOXTICELLO, IlL. This station is located at the I. C. Eailroad bridge, about one-half mile west of Monticello, 111. It was established Feb. 4, 1908, for the purpose of collecting data to be used in studying drainage, water supply, and flood control problems; and also for obtaining general statistical and comparative data. There are no tributaries of any size near this station; the drainage area above the section is about 550 square miles. The datum of the gage has not been changed ; the records are reliable and accurate. Saxgamox Eiyek. Discharge Measurements of Sangamon River near Monticello, III., for 1908 to 1910. Date. Hydrographer. Width- Feet. Area of section— Sq. ft. Mean velocity — Ft per sec. Gage height- Feet. Dis- charge- Sec, ft. 1908 April 9 May 12 July 2« December IF, 1909 :March 20 March 24 May 20 December 1910 March 11 March 11 May 24 May 27 May 28 R.J. Taylor R.J. Taylor R.J. Taylor R.J. Taylor Wm. M. O'Neill. Wm. M. O'Neill. H. J.Jackson H.J.Jackson M. E. McChristie M. E. McChristie H.J.Jackson H. J. Jackson H. J. Jackson 154 366 101 137 125 138 116 140 140 161 152 144 1111 2863 130 64 417 351 463 181 491 489 1010 773 670 1.27 2M 0.47 0.21 0.67 0.63 0.76 0.44 0.79 0.80 1.19 0.99 0.94 9.25 13.65 2.65 2.05 4.83 4.35 5.13 3.07 5. 38 5.38 8.86 7.46 6.74 61 13 281 222 352 3.89 3.91 1200 767 634 9 S W 130 Saxga:^iox Eiver. Daihj Gage Height in Feet of Sangamon Elver near Monticello, III., for 1908 to 1910. 1908. Day. 1 Jan. 1 Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 9.9 10.0 10.5 10.7 6.6 6.7 6.5 6.3 10.0 9.1 8.5 9.6 7.3 6.8 6.4 6.2 3.1 3.7 3.3 3.2 2.2 2.2 2.2 2.1 2.0 1.9 1.9 1.9 1.9 2.0 2.0 2.0 2.0 2.2 2 1 9 9 9 2.2 3 2.2 4 4.2 2.2 5 6.1 10.7 6.2 11.3 6.0 3.1 2.1 9 1.8 2.0 2.2 6 8.6 10.7 6.2 11.5 5.6 3.0 2.1 8 1.8 2.0 9.0 10.7 6.1 12.5 5.4 3.0 2.1 8 1.8 2.0 2.i 8 8.3 10.8 6.8 13.5 5.1 2.9 2.1 8 1.8 2.0 2.1 9 7.7 10.7 9.1 13.1 5.0 2.9 2.0 8 1.8 2.0 2.1 10 6.9 10.2 9.4 12.8 4.9 2.9 2.0 8 1.8 2.0 2.0 11 6.3 9.6 8.8 11.8 4.7 2.8 2.0 8 1.8 2.0 2.0 12 7.3 9.2 8.2 13.6 4.5 2.8 2.0 s 1.8 2.0 2.0 13 8.6 8.8 7.4 14.6 4.3 2.7 2.1 8 1.8 2.0 14 10.2 8.4 7.2 15.2 4.4 2.9 2.3 8 1.8 2.0 2.0 15 11.2 8.0 6.9 14.0 4.4 3.1 2.2 8 1.8 2.0 2.0 16 11.4 7.4 6.9 12.6 4.2 2.9 2.2 8 1.8 2.0 2.0 17 12.0 7.1 7.0 11.7 4.0 2.8 2.2 8 1.8 2.0 2.0 18 11.3 7.1 7.0 12.0 3.9 2.7 2.1 8 1.8 2.0 2.0 19 10.2 8.0 6.8 11.6 3.8 2.6 2.0 8 1.8 2.0 2.0 20 8.2 8.7 6.7 11.5 3.8 2.6 2.0 8 1.8 2.0 21 8.0 8.9 6.4 11.5 3.7 2.6 2.0 8 1.8 2.0 2.6 22 7.7 8.5 6.0 11.6 3.5 2.6 2.0 8 1.9 2.0 2.0 23 7.9 7.9 6.0 10.8 3.5 2.5 1.9 8 1.9 2.1 2.0 24 7.4 7.3 8.0 10.1 3.4 2.5 1.9 8 1.9 2.1 2.0 2h 8.3 6.9 10.1 9.7 3.3 2.6 1.9 8 1.9 2.1 2.0 26 10.1 6.6 10.5 9.2 3.2 2.6 1.9 8 1.9 2.2 2.0 27 10.6 6.3 11.1 8.7 3.1 2.5 1.9 8 1.9 2.2 28 10.5 6.3 11.0 8.2 3.1 2.5 1.9 9 2.0 2.1 2.6 29 10.6 6.9 10.8 8.1 3.2 2.4 1.9 9 2.0 .. 2.0 30 6.4 6.6 10.7 8.0 7.8 3.2 2.3 2.3 1.9 1.9 9 2.0 2.0 2.3 2 3 31 2 4 131 Saxga:mon RivEii. Daily Gage Height in Feet of Stuigainon River near Monticello, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 2 3 4 5 6 7 2.4 2.3 '2!3" 2.3 2.0 2.0 2.0 2.0 2.1 2.1 2.1 2.1 2.1 "2.\" 2.0 2.0 2.1 2.4 2.5 "2 is" 2.35 2.3 2.3 2.6 2.5 2.5 2.4 2.4 2.4 2.6 2.7 8.6 8.1 7^1 6.7 6.4 4.25 4.15 4.2 4.3 8.4 9.8 9.1 7.6 ■"■6!2"" 9.95 10.9 10.9 10.15 9.2 9.25 8.55 7.6 7.0 6.6 6.05 6.1 7.95 9.15- 9.35 8.95 8.1 7.5 6.9 5.7 5.4 5.2 5.05 4.8 ■"'4"45' 4.9 6.6 8.2 9.0 7.9 ""q\\" 6.55 6.4 6.85 7.4 7.3 ■"s's" 5.35 8.55 8.4 7.15 6.9 7.9 6.3 5.75 5.2 4.9 ""a'a" 5.3 5.3 4.8 4.5 4.4 ""4'8" 4.4 4.1 3.85 3.6 3.5 "'3"55' 3.8 7.8 8.5 8.2 7.2 9.2 14.85 13.15 10.95 9.1 7.8 6.9 " 5.7 5.2 5.0 4.75 4.3 4.15 '"z.h" 3.8 3.7 3.6 3.45 3 35 "'"sii" 3.0 2.95 2.95 2.9 2.8 ""2}>" 2.55 2.5 2.45 2.4 2.4 "2.1" 2.3 2.3 2.25 2.2 2.2 "'2.(i" 2.1 2.1 2.9 3.0 2.45 ""'2!2'" 2 2 2.2 2.1 2.2 2.2 ....... 2.1 2.1 2.1 2.1 2.1 "'2.hK 2.0 2.1 1.95 1.95 1.95 "i'o 2.0 2.4 2.4 2.25 2.2 2.1 2.1 2.0 2.0 2.0 V'2.b" 2.0 2.0 2.0 1.95 1.95 ""2.ii" 2.0 2.0 2.35 3.4 2.35 2.35 2.35 2.3 "2;35" 2.3 2.3 2.3 2.7 2.9 3.25 3.2 3.15 3.1 "•i.b 3 5 8 9 10 11 12 13 14 3.2 3.2 3.8 4.S 4.8 4.6 4.9 '"i'2" 8.5 8.0 7.8 8.0 9.0 ■■■gis" 10.1 10.85 11.1 11.1 10.3 5.8 5.9 6.3 6.5 6.2 5.9 ""5"4"' 5.2 5.0 4.7 4.9 4.9 '"k'.h" 4.5 4.3 4.7 5.0 5.2 ■"4!85' 4.6 4 4 3.5 2.8 2.8 2.8 "sir 4 3" 15 16 17 18 2.1 2.0 "2'3*" 2.15 2.2 2.25 2.3 2.4 2.35 2.3 2.3 2.3 2.25 2.9 4.4 5.0 4.5 4.7 4.25 3.8 3.8 3.95 3.85 3.7 '3!4" 3.3 4.3 4.35 4.4 4 25 19 20 21 22 23 24 25 26 27 28 29 30 31 8.55 8.75 9.8 10.5 10.4 10.0 ""s'.hb 8.0 7.4 7.05 8.7 4.2 3.9 3.7 3.6 3.5 3.4 3.5 3.2 3.25 3.25 3.1 3.1 3 1 Gage heights Jan. 30, Dec. 8-10, 18-31 are to top of ice. 132 San"gamox Eiyer. Daihj Uagc IleigJit in Feet of Sangamon River near Monticello, III., for 1908 to 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 3.1 3.3 3.35 3.35 3.35 3.35 3.35 3.25 5.7 5.4 5.9 6.1 6.2 9.0 8.5 7.4 6.6 6.5 3.35 3.3 6 3 2 3 . 75 4.0 4.2 4.0 3-. 7 3.85 5 6 3 5 2 4 3.35 3.35 3.4 3.3 3.25 3.15 4 9 f) 4 45 5.15 5.0 5.2 4.8 4.6 4.1 6.9 6.7 6.2 5.75 5.4 5.2 4 25 S 4 9 4.3 4.3 4,3 4.4 4.45 4.3 3 6 10 3.1 3.1 3.15 5.6 8.35 8.7 3 8 11 3.1 3.1 3.05 3.0 3.0 3.05 3 65 12 13 3 4 14 4.25 4.3 4.3 3.6 4.3 4.9 4.0 4.0 4.0 3.9 3.8 3.6 3.95 4.8 4.6 4.45 4.3 4.25 4.15 3 3 15 3 2 10 : 3.95 3.8 3.7 3.6 3.65 3.75 3 1 17 . - . . . 9^5 9.7 10.0 10.2 10.2 3 05 18 3.2 3.2 3.15 3.1 3.1 3.1 3 19 20 2 8 21 4.0 3.95 3.85 3.8 3.7 3.7 2.75 22 2 7 23 7.2 8.85 9.45 9.15 7.3 6.8 2.6 24 9.65 8.7 7.7 7.3 7.2 7.25 5.85 5.85 2 6 2.5 ■3.1 3.2 3.25 3.4 3.75 3.7 2 5 26 27 4 28 9.45 3.7 3.6 3.6 6.45 29 5 6 30 6.4 6.7 4 6 31 Gage heights Jan. 1-12 were affected by ice conditions, 133 Saxgamox liivKi; Daily Discharge of Sanijainon River near lOOS to 1010. Monticello, 111., for Day. Jan. Feb. Mar. Apr. May. June July. Aug. Sept. Oct. Nov. Dec 194 524 liOO 1240 1010 846 676 562 756 1100 2120 3240 3480 4250 3360 2120 976 920 846 895 777 1010 2020 2540 2430 2430 1830 1920 2430 2650 2650 2650 2650 2760 2650 2120 1580 1330 1170 1040 920 777 715 715 920 1130 1200 1070 895 756 676 619 562 562 676 581 619 638 600 562 543 543 524 657 1280 1450 1170 976 777 735 676 676 695 695 657 638 581 505 505 920 2020 2430 3120 3000 2760 2650 1920 1280 1070 1580 3360 3600 4970 6560 5920 5440 3990 6720 8320 9280 7360 5120 3860 4250 3730 3600 3600 3730 2760 2020 1660 1330 1130 976 948 920 870 756 657 581 543 505 429 392 338 320 302 268 236 208 222 222 194 170 159 148 148 138 118 118 108 99 90 82 82 90 90 82 138 99 90 82 74 74 66 66 66 58 58 50 66 82 66 58 50 43 43 43 43 37 37 43 43 37 37 31 25 25 Total. 409036 42823 33602 111874 7813 1812 199 226 387 439 Discharge on days when gage height Is missing was obtained by interpolation. 134 SANGA^klOX ElYER. Daily Discharge of Sangamon River near Monticello, III, for 1908 to 1910. Day. Jan. Feb. i Mar. Apr. i 1 May. June. July. Aug. Sept. Oct. Nov. Dec. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 2") 23.!.-.. 24 25 26 27 28 29 30 31 31 25 25 25 2^ 8 6 6 6 6 6 8 8 8 8 10 10 10 11 11 15 31 37 30 23 28 25 25 20 20 15 20 31 31 31 43 50 70 90 148 284 284 252 302 518 735 1070 920 870 920 1240 1490 1740 2020 2820 3120 3120 2220 1660 1100 948 846 715 638 581 624 467 486 562 600 543 486 439 392 356 320 268 302 302 277 252 236 208 268 320 356 325 293 252 222 201 188 194 188 182 208 1040 1740 1280 822 682 543 1880 2880 2880 2070 1330 1200 1080 1150 1740 2430 2320 1920 1520 1120 920 777 705 1130 1360 1220 1080 822 695 619 514 524 907 1300 1420 1220 948 799 676 600 524 448 392 356 329 284 256 229 302 619 976 1240 895 738 581 610 581 666 777 756 612 467 383 1080 1040 725 676 1170 1660 895 562 458 356 302 262 222 374 374 284 236 222 253 284 222 182 154 128 118 120 123 148 870 1070 976 735 1330 8720 6000 2940 1280 870 676 562 448 356 320 276 208 188 168 148 148 138 128 113 104 93 82 ]l 70 66 58 50 43 40 37 34 31 31 31 31 25 25 22 20 20 16 11 15 15 66 74 34 27 20 ' 20 20 15 20 20 18 15 15 15 15 15 15 14 13 11 15 10 10 10 10 11 11 31 31 22 20 18 15 15 15 11 11 11 11 11 11 11 11 10 10 10 11 11 11 13 15 11 18 25 18 20 22 25 31 31 31 28 25 25 25 22 25 28 108 28 28 28 25 26 28 25 25 25 50 66 66 66 222 320 236 268 201 170 138 148 148 164 153 138 123 108 99 94 90 86 82 100 118 118 80 50 40 50 100 138 208 208 215 222 180 150 130 120 100 80 70 60 50 50 40 40 30 30 Total. 522 26099 13884 36320 22873 16691 29563 1251 476 550 3258 3129 Discharges on those days on which there are no gage heights were obtained by interpolation. Dis- charge Jan. 6-18, 29-31, Feb. 1, Dec. 8-12 and 18-31 was estimated from the gage readings, climatologicfiJ and other data. Year period 154616. 135 Sangamon Eiver. Daily Discharge of Sangamon River near Monticello, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. 448 392 486 524 543 445 347 320 356 284 252 182 192 201 208 208 128 208 302 170 170 170 159 148 128 164 638 1480 1240 1070 777 61 i 600 638 676 638 543 458 392 356 320 .284 252 229 208 201 188 179 170 164 154 148 138 138 138 138 128 128 121 104 99 102 104 104 108 99 94 86 84 82 82 78 74 74 78 84 90 90 86 82 82 82 82 82 90 94 108 143 138 140 143 170 194 170 138 160 182 208 208 208 222 229 208 186 164 148 138 128 133 143 439 735 1190 1480 1300 756 657 629 581 638 562 2 . 429 3 356 4 302 5 6 229 7 201 8 170 9 128 10 148 11 133 12 . 120 13 429 1020 1130 988 846 1510 1660 1920 2120 2120 1870 1620 1130 846 756 735 746 476 476 108 14 99 15 90 16 82 17 78 18 74 19 . 66 20 58 21 .... 54 22 50 23 43 24 43 25 37 26 104 27 170 28 590 29 429 30 252 31 ... . . Total (13-31) 22348 9253 11433 2785 12025 5471 Discharge on days when gage height is missing was obtained by interpolation 136 Saxgamox Eiver. Bating Table for Sangamon River near Moniicello, III., for 1908 to 1910. Gage height— Dis- charge- Sec, ft. Gage height- Feet. Dis- charge — See. ft. Gage height — Feet. Dis- charge — Sec. ft. Gage height- Feet. Dis- charge- See, ft. 1.00 1 10 4. so 4.90 5.00 5.10 5.20 5.30 5.40 5.50 5.60 284 .302 320 338 356 374 392 410 429 8.60 8.70 8 80 1100 1134 1168 12.40 12 50 4820 4970 1 20 12.60 12.70 12.80 12.90 13.00 13.10 13.20 13.30 13.40 13. .50 13.60 13.70 13.80 13.90 14.00 14.10 14 20 5120 1.30 1.40 1 50 8.90 9.00 ■9.10 9.20 9. .30 9.40 9.50 9.60 9.70 9.80 9.90 10.00 10.10 10 20 1204 1240 1280 1330 1.390 1450 1510 15S0 1660 1740 1S30 1920 2020 2120 5280 5440 5600 1.60 1.70 1 SO 8 11 5760 5920 6080 1.90 2.00 5.70 5.80 :. 5 90... 448 467 486 6240 6400 2 10 15 6560 2 20 20 6.00 6.10 6.20 6.30 6.40 6.50 6.60 6.70 6.80 6 90. - 505 524 543 .562 581 600 619 638 657 676 6720 2.30 2 40 25 31 6880 7040 2.50 2 60 37 43 7200 7360 2 70 2 80 50 58 66 10.30 10.40 10.50 10.60 10.70 10 80 2220 2320 2430 2540 2650 2760 7520 7680 2 90 14 30 7840 3 (X) 74 14.40 14.50 14.60 14.70 14. SO 14.90 15.00 15.10 15.20 15.30 15.40 15.50 15.60 15.70 15 80 15.90 16.00 8000 3 10 82 90 ....... 99 108 118 128 8160 3 20 7 00 695 8320 3 30 7 10 715 10.90 11.00 11.10 11.20 11. .30 11.40 11. .50 11.60 11.70 11.80 11.90 12.00 12.10 12.20 12 30 28S0 3000 3120 3240 3360 3480 3600 3730 3860 3990 4120 42.50 4390 45.30 4670 8480 3 40 7 20 73.5 8640 3 .50 7 30 756 8800 3 60 7.40 7.50 7.60 7.70 7.80 7.90 8.00 8.10 8 20 777 799 822 846 870 895 920 948 97() 8960 3.70 3. SO 3 90 138 148 159 9120 9280 9440 4 (K) 170 9600 4.10 4 20 182 194 9760 9920 4. .30 4 40 208 222 236 252 268 10080 10240 A.hO 4.60 4.70 8.30 8.40 8. .50 1006 1036 1068 10400 10560 Note —The iihov(> table is not applicable for ice or obstructed channel conditions. It is based on 13 discharge nieasurcnients made during 12 feet on the present gage. The high water of 1875 is said to liave l)een about one-half foot lower than tlie flood of 1883. 138 Sangamon- River. Discharge Measurements of Sangamon River at Riverton, III., for 1908 to 1910. Date. Hydrographer. Width- Feet. Area of section— Sq. ft. Mean velocity —Ft. pe sec. Gage height- Feet. Dis- charge- Sec, ft. 1908 February July 1909 Februarj'' March March May November 1910 March May May May June R.J. Tajdor. R.J. Taylor. R.J, Taylor 18)Wm. M. O'Neill. Wm. M. O'Neill. H.J.Jackson... H.J.Jackson... M. E. McChristie H.J.Jackson H.J.Jackson H.J.Jackson H.J.Jackson 218 151 157 181 175 197 180 179 212 184 222 200 2202 733 856 1360 1167 1758 1211 1191 2100 1320 2350 1790 1.70 0.45 0.46 ].09 0.94 1.39 1.03 1.03 1.58 1.14 1.59 1.41 16.50 8.4 9.37 12.27 11.33 14.56 11.97 11.88 16.47 12.83 17.54 15.02 3755 326 397 1477 1092 2437 1247 1222 3320 1510 3750 2520 Sangamon River. Daily Gage Height in Feet of Sangamon River at Riverton, III., for 1908 to 1910. 1908. Day. Jan. Feb Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 16.5 18.0 19.9 20.0 20.9 20.5 20.0 20.4 20.5 20.5 20.1 20.0 20.fi 21.7 22.1 22.0 21.8 22.1 21.9 21.7 21.5 21.3 21.6 21.5 21.6 22.1 22.3 22.1 21.9 21.7 21.5 21.0 20.7 19.5 17.1 16.5 16.0 15.5 16.1 14.9 14.7 14.4 14.3 14.6 15.0 15.6 1.T.9 16.1 15.9 16.0 16.1 16.0 15.8 15.7 16.0 16.4 16.7 16.9 17.1 17.1 17.0 16.9 16.4 15.9 15 14 14 13 13 13 1 5 9 4 4 13.9 14.9 16.0 18.0 19.7 21 1 20.9 20.7 20.4 19.8 19.4 21.8 23.1 23.8 24.8 26.3 26.4 26.0 25.8 25.4 24.8 24.3 23.3 23.2 23.4 23.5 23.1 22.6 22.1 22.6 22.4 22.2 22.0 21.9 21.4 20.5 19.7 19,0 17.9 16.2 15.1 14.3 13.8 13.5 13.2 12.9 12.5 12.0 11.9 11.7 11.5 11.4 11.0 10.8 10.6 10.4 10.3 10.2 9.9 9.8 9.6 9.5 9.4 9.3 9.2 9.1 9.0 9.0 9.0 9.5 9.4 9.2 9.0 9.0 8.9 9.7 10.6 10.5 10.0 9.5 9.3 9.1 8.9 8.7 8.7 8.6 8.6 8.5 8.5 8.6 8.6 8.5 S.6 8.6 8.5 8.6 8.4 8.3 8.2 8.1 8.0 7.9 7.9 7.8 7.8 7.7 7.7 7.7 7.7 7.7 7.7 7.7 7.7 7.7 7.7 7.7 7.7 7.6 7.6 7.6 7.6 7.5 7.4 7.4 7.3 7.3 7.2 7.2 7.2 7.1 7.4 7.6 7.6 7.5 7.5 7.4 7.3 7.3 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.1 7.1 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.8 6.8 6.8 6.8 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.6 6.6 6.6 6.6 6.6 6.6 6.6 6.6 6.6 6.7 6.8 6.8 6.8 6.8 6.8 6.9 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 139 Sangamon Eivkr. Daily Gage Height in Feet of Sangamon River at Riverion, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 8.2 11.0 16.5 20.0 10.7 10.5 7.8 8.0 8.4 10.9 2 8.4 10.9 16.0 19.0 10.0 10.4 7.8 8.0 8.4 10.6 3 8.6 *"i7!2"" 10.9 15.8 19.0 9.8 10.3 7.8 8.0 8.5 10.55 4 8.6 16.4 10.9 15.6 19.25 9.6 10.2 7.8 8.0 8.6 10.45 6 8.7 15.7 10.9 15.2 18.0 10.1 10.1 7.8 8.0 8.6 10.2 6 8.9 15.0 10.8 15.0 16.9 13.7 9.9 7.8 8.0 8.6 10.2 7 9.0 14.7 10.8 14.8 15.8 • 20.5 9.8 7.8 8.0 8.5 10.15 8 9.4 13.9 10.9 14.9 15.4 19.9 9.8 7.8 8.0 8.6 9.7 9 9.6 12.5 11.4 15.1 15.65 19.9 9.8 7.7 8.0 8.8 9.3 10 9.9 12.4 12.1 16.5 14.95 19.5 9.7 7.7 8.0 8.9 9.6 11 10.4 12.0 12.6 16.4 14.5 19.0 9.5 7.7 8.0 9.0 9.8 12 10.5 11.8 12.9 17.2 14.5 20.5 9.3 7.6 8.0 9.0 10.0 13 10.8 11.5 13.2 18.5 14.7 22.5 9.2 7.6 8.0 9.05 10.3 14 10.9 11.9 13.8 18.4 14.9 23.7 &.9 7.6 8.0 9.05 10.9 15 11.0 12.0 14.0 18.3 13.7 24.3 8.7 7.6 8.0 11.8 16 11.2 12.1 14.4 18.0 13.1 24.0 8.7 7.9 8.0 12.4 17 14.0 12.1 15.9 17.4 12.9 22.0 8.4 8.0 8.0 13.0 18 15.1 11.9 16.9 16.9 12.7 21.0 8.3 8.0 8.0 12.9 19 16.0 11.8 18.4 16.2 12.1 20.5 8.1 8.0 8.4 12.4 20 7^2 17.0 11.6 19.5 15.4 11.8 19.4 8.1 8.2 8.5 "ii'.k" 12.0 21 7.3 18.0 11.6 20.8 14.4 11.6 18.0 8.0 8.2 8.5 11.7 22 7.3 18.6 11.5 21.9 13.4 11.3 17.2 7.9 8.1 8.5 11.7 23 7.3 19.4 11.5 22.6 12.6 11.2 16.5 7.8 8.1 8.4 11.4 24 7.4 19.6 11.4 22.3 11.7 11.0 15.2 7.8 8.1 8.4 11.15 25 7.5 11.3 22.0 13.0 10.7 14.0 .7.7 8.0 8.4 10.9 26 7.5 11.3 21.4 14.05 11.0 13.1 7.7 8.0 8.4 "i2!6" 10.7 27 7.5 11.2 20.5 15.6 11.6 12.7 7.7 8.0 8.4 11.9 10.5 28 7.5 11.25 19.0 16.4 11.8 11.6 7.6 8.0 8.3 11.65 10.4 29 7.6 11.1 18.1 17.5 11.6 11.2 7.6 8.0 8.3 11.4 10.2 30 7.6 11.0 17.5 17.5 11.4 10.8 7.6 8.0 8.3 11.0 10.0 31 7.9 11.0 19.0 10.6 7.6 8.3 10.0 Gage heights Dee. 8-10, Dec. 22-31 were affected by ice conditions. 140 Saxgamon River. Daily Gage Height ifi Feet of Sangamon- Biver at Eiverton, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 . 10.0 10.0 10.1 10.5 10.5 10.25 10.2 10.2 10.3 10.5 13.8 13.3 13.0 12.9 12.85 12.8 12.7 12.6 12.4 12.1 17.4 18.1 18.5 19.0 19.3 19.0 18.1 17.1 16.0 15.1 10.0 9.95 9.0 9.0 10.2 10.4 10.6 10.4 10.2 10.0 10.6 10.45 10.8 14.6 15.15 14.6 13.95 13.9 14.5 14.55 16.55 2 15.1 3 14.2 4 13.5 5 12.9 (j 12.7 12.5 S 12.1 9 11.7 10 12.0 11 10.4 10.1 10.8 14.5 12.0 11.8 11.7 11.2 14.2 13.6 13.0 12.6 9.9 9.8 9.7 9.6 14.5 16.75 18.0 17.8 13.1 12 11.6 13 11.0 14 10.65 15 15.9 11.1 12.2 9.6 17.0 10.5 16 16.2 11.2 12.0 9.5 16. 6 10.4 17 16.0 10.7 11.8 10.05 15.6 10.3 18 18.4 9.8 11.5 10.4 14.8 10.0 19 20.2 10.2 11.4 11.0 13.6 9.8 20 21.05 10.7 11.2 11.05 12.9 9.7 21 21.2 10.8 11.1 10.7 12.6 10.1 22 21.0 10.5 11.0 10.45 13.2 9.6 23 21.0 10.. 55 10.9 10.2 14.25 9.3 24 20.7 10.3 10.8 10.0 17.8 9.2 2.5 20.3 10.1 10.7 9.9' 19.5 9.1 2f) 19.8 10.4 10.5 9.9 20.05 9.1 27 - 19.1 13.2 10.4 10.05 20.2 10.2 28 18.5 15.9 10.3 10.4 19.9 14.8 29 17.0 10.3 10.5 19.6 14.7 30 15 6 10 3 10 65 19 2 13 4 31 14.5 10.1 18.1 Gage heights Jan. 1, 2 and 3 were affected by ice conditions. 141 Sanga:mox Kiver. Daily Discharge of Saiigamon River at Biverton, III., (or Jiins to I'JJU. 1908. Day. Jan. Fob Mar. Apr. May Juno, j July. I Aug. Sept. Oct Noy. Dec. 1 2 3 4 5 6 7 0 22 90 8940 120 u.m 23.00 9060 Note— The above table is not applicable for ice or ob.slniclod channel conditions. It is based on 12 discharge measurements made during 1P08, 1909 and 1910. Above gage height 22.4 feet the rating curve i.s a tangent, the difference being 120 per tenth. 145 Sangamox River. Monthly Discharge of Sangamon River ab Biverion, 111., for 1908 to 1910. (Drainage Area 2560 Square Miles.) Discharge in Second-feet. Month, Maximum. Minimum. Mean. Run-ofT. Second-feet per .square mile. Depth, in inches. Accuracy. 1908 February 1.3-29.. March April May June July August September October November December 1909 January February March April May June July August September October November December The year.. 1910 January February March April May June 8010 8230 6920 13100 3320 792 190 148 92 101 101 179 8580 5040 5830 10600 760 214 254 7020 3140 5260 938 6020 3520 3490 2260 1830 4.310 344 202 101 83 67 60 101 101 214 920 856 1170 824 486 148 148 190 240 101 &34 634 344 744 366 6260 5360 3530 8810 1080 350 147 107 76 1 72.6 101 114 2140 1690 3460 3200 2340 4160 355 178 211 723 783 1610 3090 1250 2110 641 3160 1240 2.45 2.10 1.38 3.44 .422 .137 .057 .012 •.030 .028 .039 .045 .837 .661 1.35 1.25 .915 1.63 .139 .070 .083 .283 .306 .630 1.21 .489 .825 .2ol 1.24 .485 1..55 2.42 1.54 3.97 .47 .16 .07 .05 .03 .03 .05 .05 .87 .76 1.51 1.44 1.02 1.88 .16 .08 .10 .32 .35 8.54 1.40 .51 .95 . .28 1.43 .54 Saxgamox Eiver xear Oakford, III. This station is located at the highway bridge about three miles north- east of Oakford, 111., and about two and one-half miles np-stream from the C, P. & St. L. Eailroad bridge. It was established Oct. 26, 1909, for the purpose of obtaining data for use in studying problems of drainage and flood control, and to obtain general statistical and com- parative data. Crane creek is tributary on the right bank about one and one-fourth- miles below, and Salt creek is tributary on the right bank about six and one-fourth miles above the section. The total drainage area above the gaging station is about 5,000 square miles. This station is on the improved portion of the river, the new channel being straight for about five miles above and one and one-half miles below the gaging section. This artificial channel was constructed TO —10 s w 14G feet wide at the top and is now about 140 feet wide, so that material changes are liable to occur in the gaging section, tending to cause a variation in the relation of discharge to gage height. The C, P. & St. L. Bailroad bridge, two and one-half miles below the section, is a wooden trestle with numerous piles in the stream bed which have a decided tendency to obstruct the flow at high water, as the trestle is at an angle to the current. Drift and ice lodge at this trestle and affect the gage heights. The datum of the gage has remained unchanged since its installation. Because of the inaccessibility of the gage it has not been possible to obtain daily readings, but the records obtained are accurate and reliable. The floods of February and March, 1907, and May, 1908, reached a height of about 21 feet on the present gage datum. Sangamon Eiver. Discharge Measurements of Sangamon River near Oakford, III., for 1909 and 1910. Date. Hydrographer. Width- Feet. Area of section— Sq. ft. Mean Gage \'eioeity height- -Ft. per Feet. sec. Dis- charge- Sec, ft. 1909 October 26 November 27 1910 March MHTCh May May June June H.J.Jackson. . . H.J.Jackson. . . M. E. McChristie H. J.Jackson. . . H.J.Jackson. . . H.J.Jackson. . . H. J.Jackson. . . H. J.Jackson 223 255 255 241 277 261 324 2S0 591 1478 i3a3 913 1800 1310 2760 1910 1.38 3.10 1.97 6.82 1.73 6.03 1.65 4.71 2.32 8.26 2.09 6.50 2.58 11.30 2.25 8.57 817 2916 2256 1512 4180 2740 7130 4310 iir SANGAMOisr River. Dailtj Gage Height in Feet of Sangamon River near Oakford, III., for 1909 and 1910. 1909. Day. Oct. Nov. Dec. 1 2.6 2.6 2.6 5 7 2 5 45 3 5 3 4 2.6 2.55 6 4 9 7 8 4 6 9 4 25 10 2.65 4 05 11 12 2.9 4.85 13 4 7 14 15 6.15 6.5 . -- 16 6 17 18 ... 8.4 6 4 19 20 9.1 8 4 21 22 8.4 7.9 8 23 24 7 6 25 26 3.1 3.1 2.95 2.85 2.7 7.2 6.8 27. ... 28 6 6 29 6.3 5.9 30 5 75 31 5 7 Gage heights Dec. 20, 22, 24, 28 and 30 are to top of ice. 148 • . • Sangamox Eiver. Daily Gage 11 eight in Feet of Sangamon Eiver near Oakford, III., for 1909 and 1910. 1910. Day. Jan. Feb. Mar. Apr. May. Juno. J 5.7 9.15 10.4 10.5 10.45 10.5 10.6 4.3 4.25 4.2 4.2 4.3 4.45 4 9 5.0 4.95 4.8 6.0 6.65 7.3 7.1 7.0 6.9 7.05 7.3 7.66 8.5 9.3 9.36 9.2 8.76 8.5 7.65 6.95 6.5 6.3 6.6 7.65 9.5 10.4 10.8 11.0 11.2 11.5 11.9 11 25 2 10 3 5.7 5.6 5.5 8.25 8.76 8 4. . 7.95 7 4 6 . . . 6 9 5.35 5.3 7.25 6 6 10 7 4 7 6 3 10.05 9.3 4.6 4.35 4.2 4.1 4.0 4.0 3.95 4.0 4.2 4.46 4.7 4.8 4.9 4.75 4.55 4. .4 4.35 4.35 4.35 4.86 5.05 4.95 6 10 6.95 6 11 5.3 6 5 12 6.5 6 46 1.3 6.4 7.3 6 6 14 5.7 5 15 1.5 9.4 4 86 16 5.85 4 6 17 10.9 11.7 12.6. 13.0 6.05 4 5 18 5.0 4.5 4 3 19 5.7 4 1 20 4 21 5.3 5.4 3 85 22 14.35 3 95 23 4.8 4.7 4.75 4 24 5.2 5.0 4.9 3.85 2.5 4 26 14.2 13.8 4 05 27 .... : 4 8 28 7.75 4.7 4.6 4.55 4.4 7.0 29 13.0 7 .30 7 31 - ... 10.0 Gage heights Jan. 1-16 were affected by ice conditions. 149 Sangamox Kiver. Dally Discharge of Sangamon River near Oaltford, III., for 1909 and 1910. 1909. Day. Oct. Nov. Dec. 1 070 670 670 670 670 658 664 670 676 682 716 750 1580 2000 2430 2700 3460 4220 4540 4860 4540 4220 3780 3590 3410 3220 2920 2850 2540 2250 2110 2 1940 3 1850 4 .. 1770 1690 6 1610 1520 s 1440 9 1260 10 1170 11 . 1280 12 1390 13 . 1500 1750 15 2000 16 2320 17 2470 18 2620 2500 20 2400 2300 22 2200 23 2100 24 2000 25 . . . 1900 26 810 810 765 735 695 1800 27 1650 28 1500 29 1400 30 . . . 1300 31 1200 To^al 3815 67276 55940 Discharge on those days when gage height is missing was obtained by interpolation. Discharge Dec. 19-31 was estimated from gage heights, climatological and other data. 150 Saxgamox River. Daily Discharge of Sangamon River near Oahford, III, for 190V and 1910. 1910. Day. Jan. Feb. Mar Apr. May. June. 1 4910 4500 4080 3950 3820 3540 3260 3180 3110 3030 2860 2700 2400 2110 2160 2220 1940 1670 1390 1620 1850 1700 1560 1500 1530 2240 2950 3660 6200 6300 6250 6300 6410 6450 6480 6520 5830 5060 4470 3890 3300 3060 2810 2580 2360 2240 2110 2010 1910 1870 1830 1790 1670 1610 1560 1500 1440 1420 1340 1290 1260 1240 1240 1290 1360 1610 1500 1390 1320 1240 1200 1150 1150 1130 1150 1240 1360 1500 1560 1610 1530 1420 1340 1320 1320 1320 1580 1700 1640 1670 1640 1560 1670 2810 3300 3150 3070 3000 3110 3300 3580 4310 5060 5110 4960 4540 4310 3580 3030 2700 2540 2770 35S0 5260 6200 6630 6S50 7070 7400 7880 7120 2 5780 4540 4 3860 3380 (3 . . 3000 2770 8 2540 9 2320 10 2320 11 2700 12 2660 13 2040 14 1760 15 1580 15 1440 17 6740 7640 8720 9210 10100 11000 11000 10900 10800 10800 10200 9700 9210 7500 5780 1390 18 1290 19 1200 20 1150 21 1080 22 1130 23 1150 1080 2t 1150 1170 27 1560 28 3070 29 3070 'in 3070 Total 139300 75440 10S570 40960 125640 72370 Discharge on those days on which there are no gage heights was obtained by interpolation. 151 Sangamon Kiver. Eating Table for Sangamon River near Oahford, III., for 1909 and 1910. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 2 00 530 550 570 5 30 1850 8.60 8.70 8.80 ■- 8.90 9 00 4400 4490 4580 4670 4760 11.90 12.00 12 10 7880 2.10 2 20 5.40 5.50 5.60 5.70 5.80 5.90 6.00 6.10 6.20 6.30 6 40.- - - 1910 1970 2040 2110 2180 2250 2320 2.395 2470 2545 2620 8000 8120 2.30 2 40 595 620 645 . . . 670 12,20 12.30 12.40 12.50 12.60 12.70 12.80 12 90 8240 8360 2.50 2 60 9.10 9.20 9.30 9.40 9. .50 9.60 9.70 9.80 9.90 10.00 10.10 10.20 10.30 10.40 10.50 10.60 10.70 10.80 10 90 4860 4960 5060 5160 5260 .5360 5465 5570 5675 5780 5885 5990 6095 6200 6305 6410 6520 66.30 6740 8480 8600 2.70 2.80 695 720 8720 8840 2 90 750 8960 3 00 780 9085 3 10 810 840 875 13.00 13.10 13.20 13.30 13.40 13.50 13.60 13.70 13.80 13.90 14.00 14.10 14 20- 9210 3.20 3 30 6. .50 6.60 6.70 6.80 6.90 7.00 7.10 7.20 7 30 2695 2770 2845 2920 2995 3070 3145 3220 3300 9335 9460 3.40 3. .50 3.eo 3.70 3.80 3.90 4 00 910 945 985 1025 1065 1105 1150 1195 1240 1290 1340 1390 1445 1500 1555 1610 1670 1730 1790 9590 9720 98.50 9980 10110 10240 10370 4.10 4.20 4 30 7.40 7.50 7.60 7.70 7.80 7 90 3380 3460 3540 3620 3700 .3780 10500 106.30 10760 4.40 4.50 4 60 11.00 11.10 11.20 11.30 11.40 11.50 11.60 11.70 11.80 6850 6960 7070 7180 7290 7400 7.520 7640 7760 14.30 14.40 14 50--. - 10890 11020 111.50 4.70 4.80 4 90 8.00 8.10 8.20 8.30 8.40 8.50 ..-■ 3860 39.50 4040 41.30 4220 4310 14.60 14.70 14 80 11280 11410 11540 5.00 5 10 5.20 14.90 15.00 11670 11800 Note— The above table is not applicable for ice or obstructed channel conditions. It is based on 8 discharge measurements made during 1909 and 1910. 152 Saxgamox Eiver. Monthly Discharge of Sangamon River near Oahford, III., for 1909 and 1910. (Drainage area 5,C00 square miles. "i Discharge in Second-feet. Run-oir. Month. Maximum. Minimum. Mean. Second-feet per square mile. Depth in inches. Accuracy. 1999 October 26-30 810 4860 695 658 763 2240 1800 9287 2690 3500 1370 4050 2410 .153 .448 .360 1.86 .538 .700 .274 .810 .482 .03 .50 .42 1.04 .56 .81 .31 .93 .54 B November B c 1910 11000 4910 6520 1700 7880 7120 5780 1390 1340 1130 1560 1080 C February B March B April A May A June A Salt Creek xeak Kexxey, III. This station is located at the highway bridge, about three miles west of Kenney, 111., a short distance below the Yandalia Kailroad bridge. It was established Feb. 14, 1908, in order to collect data to be used in the study of drainage and flood control problems, and to obtain data for general statistical aud comparative ])urposes. Ten Mile creek is tributary on the right bank about four miles above the gaging station. Salt creek is a tributary of the Sangamon river. The drainage area above the section is about 459 square miles. The datum of the gage has not been changed ; the records are reliable and accurate. The high water of 1882 is said to have been about one or one and ouo-half feet higher than that of tlie spring of 1908, or to have reached a hciglit of about sixteen feet 'on tlie present gage. 153 Saxgamox Eivek. Discharge Measuremenis of Salt Creek near Kenney, III., for was to 1010. Date. Hydrographer. 1908 May s ■July 28 t- 1909 Feb. 6 March 19 May 19 November 24 1910 Mar. 9 May 25 Mav 25 Width- Feet R.J. Tavlor R.J. Taylor R.J. Tavlor Wm. M. 'O'Neill. H. J. Jackson H. J. Jackson M. E. McChristie H.J. Jackson . . . H. J. Jack?on 157 107 102 109 110 111 111 112 112 Area of section— Sq. ft. 1276 178 119 258 254 265 300 344 349 Mean velocity —Ft. per sec. 2.54 0.36 0.23 0.78 0.85 0.89 1.18 1.27 1.30 Cage height— teet. Di.s- charge- Sec. ft. 10.5 2.1 1.91 2.89 2.92 3.17 3.43 3.96 3.94 3239 04 27 201 215 236 355 438 454 Saxgamox River. Daily Gage Height m Feet of Salt Creek near Kenney, III., for 1908 to 1910. 1908. Day. Jan • Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. 1 Nov. Dec. 1 5.9 6.6 7.0 7.0 7.1 7.7 7.8 7.1 6.6 6.0 5.0 5.2 4.9 4.7 3.4 3.6 3.3 3.2 3.4 3.3 3.7 4.2 4.6 4.8 4.7 4.4 4.0 3.9 5.6 5.2 4.8 8.0 9.0 10.7 10.1 10.7 11.6 10.5 9.8 13.0 15.0 12.0 4.6 4.2 4.0 4.0 3.8 3.9 3.7 3.6 3.3 3.2 3.2 3.0 2.9 2.9 2.8 2.8 2.6 2.4 2.3 2.4 2.4 2.3 2.2 2.1 2.1 2.1 2.0 2.0 1.9 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.5 1.6 1.6 1.7 1.6 1.5 1.5 1.5 1.6 1.6 1.6 1.5 1.6 1.5 1.5 1.5 1.5 1.5 1.5 1.9 1.9 1.8 1.8 1.8 1.8 1.8 l.S 1.7 1.8 1.9 1.7 1.9 1.7 1.9 2 8 8 9 9 9 9 8 8 9 9 9 1.8 3 1.8 4 1.8 5 1.8 () 1.8 1.8 8 1.8 9 1.8 10 1.8 11 1.7 12 1.7 13 1.7 14 8.0 1.7 15 9 1 4 6 4.9 12.7 3.0 2.1 9 1.5 1.5 1.7 16 10.1 4.0 5.2 10.0 2.9 3.2 8 1.4 1.6 l.S 1.7 17 9.1 3.9 4.9 8.7 2.8 2.6 9 1.4 1.7 1 .8 l.t 18 6.1 3.8 4.9 8.0 2.8 2.5 8 1.3 1.5 1.7 1.8 19 4 2 4.2 4.6 8.6 2.9 2.2 8 1.4 1.8 1 .8 1.. 20 3.6 4.6 4.2 8.9 2.9 2.1 9 1.4 1.9 1.9 21 4.0 4.4 4.0 8.0 2.8 2.1 8 1.4 1.9 1 .8 l.< 22 4 6 4.0 3.7 8.1 2.8 2.0 'i 1.4 1.9 1 .8 1 .' 23 4.8 4.0 3.2 7.1 2.8 3.4 '< 1.4 1.8 l.S 1.7 24 5.4 3.9 5.8 6.6 2.7 2.2 V 1.4 1.9 l.S 1.6 25 7.4 3.8 7.0 5.9 2.6 2.0 .6 1.4 l.S l.S 1./ 26 8.0 3.8 7.6 5.9 2.5 2.0 6 1.5 l.S 1.8 27 8 3 3.4 7.6 5.6 2.4 3.8 6 1.7 IS 1 .8 1 s 28 7.7 3.6 7.5 5.1 2.3 3.0 6 1.6 1.8 l.S 1.7 29 6.8 3.5 6.8 5.5 2.7 2.2 .V 1.5 1.8 1.8 1 .9 30 3.3 3.3 6.0 5.3 4.9 2.8 2.0 19 .6 .6 1.5 l.S 1.9 1.8 2. i 31 2.1 15J: Saxgamox IhvEii. Daily Gage H eight in Feet of Salt Creeh near Kenney, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May June. July. Aug. Sept. Oct. Nov. Dec. 1 1.9 2.1 4.8 2.5 6.0 3.1 2.2 2.0 1.45 1.45 1.5 2.4 2 1.8 2.1 4.6 2.5 5.25 2.9 2.1 1.95 1.4 1.3 1.9 2.4 3 1.8 2.1 4.2 2.5 4.7 2.9 2.05 1.9 1.7 1.35 1.85 2.3 4 1.8 2.1 4.0 2.45 4.2 2.85. 1.95 1.85 1.65 1.35 1.75 2.3 5 1.8 2.0 3.8 2.4 3.9 2.8 2.5 1.85 1.5 1.4 1.75 2.3 6 1.7 2.0 3.7 2.45 3.75 3.1 2.8 1.8 1.45 1.35 1.75 2.25 7 1.7 2.1 3.5 3.1 3.5 2.9 5.75 1.75 1.5 1.35 1.75 2.3 8 1.7 2.2 3.4 3.55 3.3 2.7 6.25 1.7 1.45 1.3 1.65 1.95 9 1.7 3.0 3.? 3.3 3.9 3.8 6.0 1.7 1.4 1.3 1.4 2.1 10 1.6 3.7 3.9 3.0 4.6 4.9 5.2 1.65 1.4 1.4 1.75 2.15 11 1.6 3.2 3.9 2.8 4.7 5.0 4.3 1.6 1.4 1.3 1.65 2.15 12 1.6 3.0 3.7 2.75 4.35 4.15 6.6 1.6 1.3 1.35 2.8 2.2 13 1.7 2.7 3.6 5.1 4.0 4.3 7.25 1.5 1.3 1.3 3.0 2.5 14 1.7 4.0 3.5 5.75 3.8 5.45 5.3 1.55 1.5 1.45 2.6 2.8 15 1.7 5.5 3.3 5.15 3.65 5.4 4.8 1.55 1.3 1.4 2.35 3.1 16 1.7 4.1 3.2 4.55 3.45 3.9 4.2 1.5 1.35 1.5 4.4 3.35 17 1.7 4.9 3.1 4.15 • 3.25 3.75 3.75 1.5 1.4 1.3 4.85 3.4 18 1.7 4.7 2.9 3.9 3.05 3.3 3.45 1.5 1.3 1.5 4.4 3.45 19 1.7 5.0 2.9 4.9 2.9 3.05 3.2 1.5 1.3 1.6 3.8 2.85 20 1.7 5.6 2.85 5.2 2.85 2.85 3.0 1.5 1.3 1.5 3.3 2.65 21 1.7 5.7 2.8 6.25 2.75 2.7 2.8 1.4 1.3 1.7 3.15 2.55 22 2.0 6.1 2.65 7.4 2.7 2.6 2.7 1.4 1.7 1.6 3.05 2.6 23 2.1 7.5 2.6 7.7 2.6 2.65 2.6 1.4 2.5 2.4 3.15 2.5 24 2.1 8.4 2.65 5.85 2.55 2.55 2.45 1.35 2.05 1.9 3.2 2.45 25 1.8 7.4 2.85 5.4 2.55 2.7 2.3 1.4 1.8 1.75 3.0 2.4 26 1.7 6.4 2.95 4.85 4.0 3.75 2.3 3.85 1.6 1.75 2.9 2.4 27 1.8 5.5 2.95 4.65 4.35 2.75 2.3 2.1 1.5 1.7 2.7 2.35 28 1.8 5.2 2.85 4.3 4.05 2.7 2.3 1.8 1.5 1.6 2.6 2.35 29 2.0 2.8 4.05 3.7 2.4 2.2 1.6 1.5 1.55 2.5 2.4 30 2.1 2.65 5.55 3.4 2.3 2.15 1.55 1.45 1.5 2.45 2.4 31 2.1 2.55 3.2 2.1 1.45 1.55 2.4 Gage heights Jan. 6-18, Dec. 7-31 affected by ice conditions. Gage heights Dec. 12-31 are to top of ice. 155 Sangamon Eiver. Daily Gage Height in Feet of Salt Creek near 1908 to 1910. Kenney, III., for 1910. Day. Jan. Feb. Mar. Apr. May. June. 2.35 2.35 2.5 2.5 2.45 2.4 2.3 2.25 2.25 2.2 2.2 2.3 3.7 5.6 5.8 5.55 5.2 7.6 7.65 8.1 8.85 8.8 8.05 6.9 6.1 5.4 5.15 4.35 4.1 3.85 3.65 3.0 3.5 3.6 3.6 3.5 3.3 3.25 3.2 3.1 2.85 2.7 2.95 2.4 2.7 2.8 2.6 2.4 2.4 2.6 2.45 2.5 2.5 2.7 2.65 2.2 2.3 5.7 6.1 5.5 4.4 3.7 3.7 3.8 3.9 3.95 3.65 3.45 3.2 3.15 3.0 2.95 2.85 2.7' 2.85 2.6 2.55 2.5 2.45 2.45 2.4 2.35 2.35 2.25 2.25 2.3 2.3 2.25 2.2 2.15 2.15 2.1 2.15 2.15 2.45 2.35 2.25 2.15 2.15 2.1 2.05 2.05 2.05 2.0 2.05 2.05 2.25 2.25 2.2 2.2 2.2 2.15 2.15 2.15 2.15 2.2 2.55 2.7 2.55 2.45 2.. 35 2.35 2.9 2.75 2.6 2.45 2.45 2.65 2.7 2.75 2.8 2.95 2.85 2.7 2.55 2.45 2.45 2.4 2.3 2.35 2.35 2.3 3.75 3.95 3.75 3.65 3.15 2.8 3.0 3.0 3.0 2.75 2 2.5 •J 2.4 4 2.35 2.3 A 2.2 2.2 2.1 Q . 2.05 If) 2.0 2.0 10 1.9 19 1.85 1.8 IE 1.8 1A 1.75 1.75 IC 1.7 1.7 1.65 01 1.6 1.6 1.6 94 1.55 1.5 1.5 07 2.05 OQ 30!! 1.7 31 ! Gage heights Jan. 1-31, Feb. 17-2S; affected by ice conditions, dischirFes were not estimated. 156 Saxgamox River. Daily Discharge of Salt Creek near Kenney, III., for 1908 to 1910. 1908. Day. Jan. Feb. Mar. Apr. May. June. 1 July. 1 Aug. Sept. Oct. Xov. Dec. 1 1070 1330 1490 1490 1530 1810 1850 1.530 1330 1100 770 834 738 676 645 465 436 407 524 645 584 465 465 436 407 407 301 352 326 277 277 301 352 277 253 301 277 379 524 645 707 676 584 465 436 738 834 738 738 645 524 465 379 253 1030 1490 1760 1760 1710 1410 1100 966 834 707 1950 2430 3350 3020 3350 3870 3240 2S50 4680 5840 4100 4510 2960 2290 1950 2240 2380 1950 2000 1490 1330 1070 1070 966 802 933 867 738 645 524 465 465 407 436 379 352 277 253 252 208 187 187 208 187 167 167 187 187 167 167 167 148 129 112 96 81 148 167 167 167 129 96 81 96 96 81 67 54 54 54 43 43 54 253 129 112 67 54 54 43 301 67 43 43 407 208 67 43 33 33 25 25 33 33 33 33 25 25 33 33 33 43 43 33 25 33 25 25 33 25 18 18 18 14 14 14 14 18 14 14 14 14 14 14 14 14 14 14 14 10 14 14 18 14 10 7 5 I 7 7 7 7 7 10 ■ 18 14 10 10 10 10 10 14 11 14 10 14 10 10 10 10 10 10 10 14 IS 10 25 33 33 33 25 33 25 25 25 25 25 25 33 33 33 25 25 25 25 25 25 18 i 18 33 18 18 25 25 18 25 33 25 25 25 25 25 25 25 25 25 25 33 2 25 3 25 4 25 5 25 6 25 25 8 25 9 25 10 25 11 18 12 18 13 18 14 15 16 17 IS 19 20 21 22 23 24 25 26 27 28 29 30 1950 24S0 3020 2480 1140 524 352 465 645 707 900 1670 1P.50 2090 1810 1410 18 18 18 18 25 18 18 18 18 18 14 18 18 25 18 •33 81 31 54 Total 23593 24967 21751 70733 7523 3206 805 336 573 755 760 157 Saxgamox River. Daily Discharge of Salt Creel' near Kenuey, III, for lOOS to WW. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 25 54 70? 112 1100 230 67 43 s s 10 96 2 25 54 645 112 850 187 54 38 7 5 33 96 3 25 54 524 112 676 187 48 33 18 6 29 81 4 25 54 465 104 524 177 38 29 16 6 22 81 5 25 43 407 96 436 167 112 29 10 7 22 81 6 15 43 379 104 393 230 167 25 8 6 22 74 15 54 326 230 326 187 1020 22 10 6 22 81 g 10 67 301 339 277 148 1190 18 8 5 16 38 9 10 208 379 277 436 407 1100 18 7 5 7 54 10 5 379 436 208 646 738 834 16 7 7 22 60 11 5 253 436 167 676 770 554 14 7 5 16 60 12 5 208 379 157 569 509 1330 14 5 6 167 50 13 g 148 352 802 465 554 1600 10 5 5 208 70 14 8 465 326 1020 407 916 867 12 10 8 129 100 15 10 933 277 818 366 900 707 12 5 7 88 180 16 10 494 253 630 314 436 524 10 6 10 584 250 17 10 738 230 509 265 393 393 10 7 5 722 270 18 10 676 187 436 219 277 314 10 5 10 584 200 19 18 770 187 738 187 219 253 10 5 14 407 60 20 18 966 177 834 177 177 208 10 5 10 277 50 21 18 999 167 1190 158 148 167 7 5 18 242 40 22 43 1140 . 138 1670 148 129 148 7 18 14 219 30 23 54 1710 129 1810 129 138 129 7 112 96 242 35 24 54 2140 138 1050 120 120 104 6 48 33 252 20 25 25 1670 177 900 120 148 81 7 25 22 208 20 26 18 1250 198 722 465 393 81 422 14 22 187 15 27 25 933 198 660 569 158 81 54 10 18 148 15 28 25 834 177 554 480 148 81 25 10 14 129 15 29 43 167 480 379 96 67 14 10 12 112 10 30 54 138 950 301 81 60 12 8 10 104 10 31 54 120 253 54 8 12 8 Total 695 17337 9120 17791 12430 9368 12433 952 419 412 5231 2250 Year period, 88438; discharge Jan. 6-18, Dec. 7-31 was estimated from the gage readings, climatological and other data. 158 Sangamon Eiver. Daily Discharge of Salt Creek near Kenney, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. 1 1 1 208 326 352 352 326 277 265 253 230 177 148 198 96 148 167 933 ! RO 88 88 187 158 129 104 104 138 148 158 167 198 177 148 120 104 104 96 81 88 88 81 393 450 393 366 242 167 208 208 208 158 2 584 379 379 407 436 450 366 314 253 242 208 198 177 148 177 129 120 112 104 104 96 88 88 74 74 81 81 74 67 60 54 60 60 104 88 74 60 60 54 48 48 48 43 48 48 74 74 67 67 67 60 60 60 60 67 • 120 148 120 104 112 3 96 4 88 81 6 67 7 67 8 54 9 48 10 43 11 43 12 33 13 29 14 25 15 25 16 22 17 22 IS 18 19 18 20 16 21 14 22 14 23 14 24 12 25 10 26 10 27 48 28 29 29 22 30 18 31 Total 3523 7003 2105 5389 1256 159 Sangamon River. lialing Table for Salt Creeh near Kenney, III., for 1908 to 1910. Gage Dis- Gage Dis- Gage Dis- Gage Dis- height- charge- height- charge — height- rharge— height- charge- Feet. Sec, ft. Feet. Sec. ft. Feet. Sec. ft. Feet. Sec, ft. 1.00 3.70 379 6.40 1248 9.00 2430 1.10 3.80 407 6.50 1286 9.10 2480 1 20 3.90 436 6.60 1326 9.20 2530 •1 30 5 4 00 465 6.70 6.80 1366 1406 9.30 9.40 2582 1.40 7 4.10 494 2634 1.50 10 4.20 524 6.90 1448 9.50 2686 1.60 14 4.30 554 7.00 1490 9.60 2740 1.70 18 4.40 584 7.10 1534 9.70 2794 1.80 25 4.50 614 7.20 1578 9.80 2848 1 90 33 4.60 645 7.30 1622 9.90 2904 2.00 43 4.70 676 7.40 1668 10.00 2960 2 10 54 4 80 707 7 50 1714 10.10 3016 2 20 67 4 90 ... - 738 7 60 1760 10 20 3072 2.30 81 5.00 770 7.70 1806 10.30 3128 2 40 96 5.10 802 7.80 •.. 1854 10.40 3184 2 50 112 5 20 834 7 90 1902 10 50 3240 2 60 129 5 30 867 8 00 1950 10 60 3296 2.70 148 5.40 900 8.10 1998 10.70 3352 2.80 167 5.50 933 8.20 2046 10.80 3408 2.90 187 5.60 966 8.30 2094 10.90 3464 3.00 208 5.70 999 8.40 2142 11.00 3520 3.10 230 5.80 1032 8.50 2190 11.10 3578 3.20 253 5.90 1066 8.60 2238 12.00...... 4100 3.30 277 . 6.00 1100 8.70 2286 13.00 4680 3.40 301 6.10 1136 8.80 2334 14.00 5260 3.50 326 6.20 1172 8.90 2382 15.00 5840 3 60 352 6 30 1910 Note— The above table is not applicable for ice or obstructed channel conditions. It is based on 9 discharge measurements made during 1908-1910, and is fairly well defined between gage heights 1.9 feet and 10.5 feet. Abovegage height 11.0 feet the rating curve is a tangent, the difference being 58 per tenth. 160 Saxgamox Eiver. Mouildij Discharge of Salt Creek near Kenney, III., for 1908 to 1910. (Drainage Area 459 Square Miles.) Discharge in Second-feet. Month. Maximum. Minimum. I Mean. Run-oflf. Second-feet per square mile. Depth in inches. Accuracj'. 1908 February 14-29. March April May June July August September October November December 1909 January February March April May June July August September October November December The year.. ]910 February 1-1.5. March April May June 3020 1850 1760 5840 645 407 43 18 33 33 81 54 2140 707 1810 1100 916 1600 422 112 96 722 3.i)2 933 148 4.50 1.58 352 277 253 707 81 33 14 5 10 18 14 43 120 96 120 81 38 1470 805 725 2280 251 103 26 11.2 18.5 25.2 24.5 22.4 619 294 593 401 312 401 30.7 14.0 13.3 174 72.6 246 235 226 70.2 174 41.9 3.20 1.75 1.58 4.97 .547 .224 .057 .024 .040 .055 .053 .049 1.35 .641 1.29 .874 .680 .874 .067 .031 .029 .379 .1.58 .535 .512 .492 .153 .379 .091 1.91 2.02 1.76 5.73 .61 .26 .07 .03 .05 .06 .06 1.41 .74 1.44 1.01 .76 1.01 .08 .03 .03 .42 .18 7.17 .29 .57 .17 .44 .10 161 SouTJt Fork of Sangamon Kiveii near Taylorville, 111. This station is located at the Wabash Kailroad bridge, about three and one-half miles southwest of Taylorville, 111., and about one-fourth mile up-stream from the highway bridge across the South fork known as the ''Half Acre Bridge." It was established Feb. 11, 1908, for the purpose of obtaining data for use in studying drainage, flood control, and water supply problems, and also to obtain general statistical and comparative data. Bear creek, a small tributary, enters the stream on the left bank a few miles below the station. The drainage area above the gaging station is about 427 square miles. In August, 1909, a drainage ditch was dug along the river in this vicinit}', straightening the course of the stream, but coinciding with the original channel at the gaging station. The cross-section of the stream at the gaging station was not altered, but the relation between gage height and discharge was materially changed, due to the change in slope. The gage heights to Aug. 10, 1909, inclusive, refer to the section before the change. The gage heights from Aug. 11 to Sept. 1, 1909, inclusive, are of no value, because the stream was dammed up for purpose of construction during that period. On Sept. 2, 1909, the datum of the gage was lowered two feet, and the gage heights from that date on refer to the new conditions. In all comparisons between the data for the original and the new conditions it should be noted that the gage datum has been changed. The records are accurate and reliable. Sangamon Eiver. Discharge Measurements of South Fork of Sangamon River near Taylor- ville. III, for 1908 to 1910. Date. Hydrographer. 1908 March June 1909 February March March May November 1910 March March March May May May May May May R.J. Taylor R.J. Taylor R.J. Tavlor Wm. M. O'Neill. Wm. M. O'Neill. H. J.Jackson. . . H. J.Jackson.. . M. E. McChristie M. E. McChristie M. E. McChristie H.J.Jackson. .. H.J.Jackson. .. H.J. Jackson. . . H.J.Jackson. . . H. J. Jackson... H. J. Jackspn... 122 484 0.33 85 345 0.25 3.3 100 422 0.34 4.10 119 429 0.34 4.09 92 390 0.31 3.60 122 462 0.46 4.57 59 237 0.40 3.98 66 275 0.56 4.91 66 278 0.57 4.88 64 248 0.54 4.66 271 1050 0.88 9.48 273 1240 0.98 9.97 128 491 0.69 7.28 86 351 0.75 6.02 76 320 0.63 5.62 274 1260 1.00 10.14 159 143 144 121 214 95 154 159 133 923 1220 339 262 202 1260 11 s w 162 Sangamon Eiver. Daily Gage Height in Feet of Soidli Fork of Sangamon Eiver near Taylorville, III., for 1908 to 1910. 1908 Day. Jan. I Feb. Mar. Apr. ' 7.0 1 6.9 7.6 6.7 8.2 7.2 8.2 7.4 7.8 7.0 7.9 6.7 8.0 6.8 8.1 7.0 8.5 7.0 8.0 7.5 7.8 7.4 7.8 7.1 7.4 6.6 6.9 6.2 6.4 5.8 6.0 5.5 5.8 5.1 5.4 4.9 5.0 4.8 5.3 4.8 5.1 4.6 4.9 4.3 4.7 4.1 4.6 6.9 4.5 7.7 4.6 8.0 4.1 8.3 4.2 8.2 4.6 8.0 4.6 7.6 4.5 May. July. Aug. Sept. Oct. Nov, Dec. 7.0 6.2 5.8 6.4 7.0 9.3 8.9 8.6 8.2 7^3 6.9 6.7 6.7 7.6 9.9 10.3 9.5 8.6 7.0 6.3 6.6 6.9 11.2 12.8 12.4 12.3 12.1 10.0 9.0 9.3 9.1 8.6 8.6 8.7 8.7 8.7 8.8 8.8 8.8 8.8 8.9 8.9 8.1 6.8 5.8 4.8 4.8 4.7 4.6 4.4 4.0 3.7 3.3 3.2 3.3 3 4 3.4 3.3 3.2 2.8 3.3 2.9 2 7 2.7 2.5 2.4 2.5 2.3 2.2 2.0 1.9 1.8 1.8 1.6 1.9 1.4 1.3 1.1 1.1 1.0 0.9 0.9 0.8 0.9 0.9 0.8 0.8 0.9 0.9 0,9 0.9 0.9 0.9 O.S 0.8 0.8 0.8 0.7 0.7 0.6 0.6 0.6 0.5 0.5 0.5 0.4 2.4 1.6 1.3 1.1 0.9 0.7 0.7 0.6 0.7 0.6 0.6 0.6 0.6 0.6 0.5 5 5 5 5 5 5 0.5 0.4 0.4 0.4 0.5 0.6 0.6 0.6 0.7 0.7 0.6 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.6 0.6 0.7 0.7 0.8 0.9 0.9 0.8 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.9 1.1 1.2 1.3 1.1 1.1 0.9 0.9 1.4 1.2 1.2 1.2 1.3 l]l 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.9 0.9 0.9 1.0 1.0 1.0 1.0 0.9 0.9 0.9 0.9 0.9 0.9 0.8 0.8 1.4 1.4 1.3 Note— Chain stolen from July 1 to 28, inclusive. 163 SANGA^ilOX ElVER. Doily Gage Height in Feet of South Fork of Sangamon River near TaylorviUe, III, for 1908 to 1910'. 1909. Day. Jan. i Feb. Mar. Apr. I May. June. July. Aue;. Sept. Oct. Nov. Dec. 1.3 1.3 1.3 1.3 1.3 1,3 1.3 1.1 1.0 0.9 0.8 0.8 0.7 0.7 0.7 0.8 0.8 0.9 0.9 1.0 1.4 2.05 3.0 3.4 3.5 3.2 1.6 1.9 2.0 2.1 1.9 1.5 1.7 1.9 2.3 2.5 3.4 4.1 4.2 4.5 4.2 3.9 3.7 3.4 5.4 6.2 6.4 5.8 6.3 6.5 7.0 7.95 8.4 8.6 8.5 8.0 6.5 5.9 5.6 5.0 4.9 4.7 4.4 4.1 4.2 4.6 4.9 5.6 5.2 4.8 4.5 4.1 3.95 3.85 3.75 3.65 3.55 3.55 3.7 3.65 3.6 3.55 3.75 3.55 3.4 3.35 3.3 3.25 3.15 3.3 3.2 3.05 3.25 4.8 5.65 5.55 4.85 4.75 8.6 8.55 8.55 8.0 7.15 6.95 6.75 8.25 9.4 10.0 9.55 8.25 7.7 6.65 6.25 5.9 5.25 4.45 4.9 4.75 4.5 4.15 4.0 3.85 4.7 7.2 7.85 8.7 8.25 7.7 6.9 6.2 5.1 4.6 4 3 3 3.75 3 .55 3.4 3.4 5.1 5.9 6.9 7.25 7.1 6.45 6.5 .15 .85 6.45 6.6 6.6 6.6 6.4 6.1 5.85 5.55 4.85 5.2 5.75 5.6 5.65 5.15 4.6 4.25 4.15 3.9 3.55 3.4 3.0 3.2 2.9 2.15 2.45 2.8 3.2 4.75 6.0 6.55 6.15 5.0 3.9 2.7 6.5 8.2 9.1 10.1 9.9 9.3 9.3 9.2 9.05 8.8 8.45 8.15 6^05 5.5 4.5 4.35 4.0 3.85 3.7 3.65 3.6 3.55 3.5 3.45 3.4 3.35 3.0 2.8 2.7 2.55 2.5 2.4 2.3 2.0 2.0 1.9 1.65 1.65 1.65 1.7 1.6 1.8 1.75 1.7 1.7 1.65 1.65 1.65 1.65 2.0 1.8 1.75 1.7 1.7 1.65 1.65 1.65 2.5 2.65 2.1 1.75 1.75 1.7 1 .7 1 .65 1.65 1.65 1.6 1.6 1.6 1.6 1.6 1.6 1.55 1.55 1.55 1.6 1,55 1.5 3.65 3.2 3.1 5.05 4.2 4.0 3.95 3.65 3.15 3.0 2.85 2.4 2.4 2.35 2.2 2.3 2.2 2.2 2.8 3.3 3.95 3.7 3.45 3.35 4.5 6.2 6.3 6.5 7.35 7.2 6.85 6.0_ 5.45 5.4 5.15 4.85 4.5 4.3 4.2 4.1 3.95 3.9 3.75 3.6 3 . 55 3.45 3.65 3.6 3.6 3.6 3.55 3.5 3.5 3.95 4.65 6.75 7.2 6.75 6.15 5.75 5.3 5.15 4.95 4.85 4.o5 4.45 4.3 4.0 3.95 3.95 3.95 3.95 3.95 Gage heights were affected by ice conditions from Jan. 3 to Feb. 13, and from Dec. 8 to 31. Dec. 17 to 31 are to top of ice. Gage heights 164 Saxgamox Eiyer. Daily Gage Height in Feet of SoutJi Fork of Sangamon River near Taylorville, III., for 1908 to 1910. 1910. Day. Jan. Feb. Mar. Apr. May. June. \ 4.25 4.55 4.75 4.85 4.95 5.4 5.9 6.0 6.2 6.35 6.85 7.05 8.0 8.8 9.7 10.0 10.1 10.45 10.7 11.0 10.85 10.25 9.35 8.65 7.3 6.75 6.35 6.0 5.45 5.05 4.95 4.5 4.55 4.95 5.4 5.5 5.4 5.2 4.95 4.7 4.45 4.2 3.85 3.8 3.75 3.65 3.55 3.7 3.7 3.9 3.95 4.2 4.25 3.9 3.8 3.85 4.2 8.9 10.0 10.95 10.7 10.25 9.95 9.6 9.15 9.0 8.1 7.75 7.1 6.8 6.05 5.5 5.1 4.95 4.8 4.75 4.7 4.55 4.6 4.7 4.65 4.5 4.45 4.3 4.2 4.05 4.0 3.9 3.9 3.85 3.8 3.65 3.4 3.2 3.9 3.65 3.3 3.1 3.05 3.15 3.3 3.35 3.9 4.0 4.1 4.85 5.95 6.75 7.05 6.6 5.9 4.95 3.9 3.65 ■3.5 3.15 3.0 3.4 3.5 3.2 3.05 4.7 7.85 8.7 8.8 8.15 7.95 8.0 8.4 8.25 9.15 9.6 10.2 9.95 9.05 8.45 7.4 6.75 5.85 5.4 6.85 8.4 10.25 9.9 11.0 10.85 10.3 9.45 8.65 SO 7.6 7.05 9 5.9 3 5.7 5.85 5 6.0 6 5.65 5.2 4.8 9 4.9 10 4.45 11 4.0 12 3.95 13 3.8 14 3.9 15 3.8 16 3.7 17 3.7 IS 3.2 19 3.2 20 3.2 21 3.1 22 3.1 23 3.1 24 3.05 2") 3.1 26 3.2 27 3.5 28 3.45 29 3.15 30 3.0 31 Gage reader made no notes with reference to ice conditions during January and February. 165 Sangamox Eiver. DaMy Discharge of South Fork of Sangamon River near Taylorville, III., for 1908 to 1910. Dav. Jan. Feb. Mar. Apr. May. June. July. I Aug. Sept. Oct. I Nov. I III! Dec. Total 800 524 424 586 800 1730 1560 1420 1270 1070 914 762 690 690 1030 1980 2160 1810 1430 800 1030 1270 1270 1110 1150 1190 1230 1390 1190 1110 1110 952 762 586 470 424 341 269 322 286 253 223 209 196 196 150 160 209 209 196 20263 762 690 876 952 800 690 726 800 800 990 952 838 654 524 424 361 286 253 238 238 209 171 150 762 1070 1190 1310 1270 1190 1030 800 554 654 762 2560 3300 3110 3060 2970 2020 1600 1730 1640 1430 1440 1460 1470 1480 1500 1510 1520 1530 1550 1560 1230 1070 762 726 690 464 238 21206 4&390 238 223 209 183 150 118 86 2350 562 8 6 7 6 6 5 6 o 6 5 6 5 6 5 6 5 6 5 6 5 6 5 5 5 o 5 5 5 o o 5 5 o 5 5 5 o 6 5 6 5 6 6 6 6 6 6 7 6 7 6 6 6 6 6 6 6 171 170 202 12 12 10 239 July 1 to 28 estimate equivalent to 19 sec. ft. per day. 1()6 Sx^-^-TtAmox Eiver. Daily Discharge of South Fork of Sangamon River near Taylorville, 111., for 1908 to 1910. 1909. Day. Jan. Feb. ' Mar. Apr. i 1 May. June. July. Aug. Sept. Oct. Nov. Dec. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 10 10 10 10 8 8 8 6 5 5 4 4 4 4 4 5 5 7 7 12 26 66 93 100 79 16 22 24 20 15 10 15 22 33 41 93 150 160 196 160 132 116 93 341 524 586 424 554 620 SOO 1170 13.50 1130 14.30 1430 1390 1190 990 620 447 381 269 253 223 183 150 160 209 253 381 304 238 196 I.dO 136 128 120 112 104 104 116 112 108 104 120 104 93 90 86 82 76 86 79 69 82 238 392 371 246 230 654 762 1430 1410 1410 1190 857 781 708 1290 1770 2020 1830 1290 1070 672 539 447 313 190 253 230 196 155 140 128 223 876 1130 1470 1290 1070 762 524 286 209 155 132 128 120 104 93 93 286 447 762 895 a38 603 620 603 654 654 654 586 496 436 371 246 304 413 381 392 295 209 166 155 132 104 93 66 79 60 28 39 55 79 2,30 470 637 510 269 132 50 620 1270 1640 2060 1980 1730 1730 1680 1620 lo20 1370 1250 1070 483 361 196 177 140 128 116 112 108 104 100 96 93 89 66 55 50 43 41 37 33 24 24 22 8 8 8 8 9 7 11 10 9 9 8 8 •8 8 15 11 10 9 9 8 8 8 30 36 18 10 10 9 9 8 7 6 6 6 7 6 5 8 12 20 30 40 80 58 54 165 109 97 94 80 56 50 44 27 27 26 21 24 21 21 42 62 94 82 68 64 127 265 276 299 430 403 348 245 197 193 173 150 127 115 109 103 94 92 81 77 74 69 79 77 77 70 60 50 60 94 136 333 403 333 240 200 170 150 130 110 90 SO 75 70 70 65 65 60 60 Total. 604 15450 59.50 22394 14408 9087 22804 815 327 1118 4298 3711 Aug. 11-31 estimated equivalent to 20 sec. ft. per day. Year period, 1009()6; discharge January 5-17, Jan. .30- Feb. 2, Aug. ll-!^opt. 1, Oct. l.")-19, Doc. S-11, and Dec. 17-31 was estimated from the daily gage heights when available and from climatological and other data. 167 SA-N-GA]\roN- River. Daily Discharge of South Fork of Sangamon Bivcr near Taylorville, 111. for 1908 to 1910. 1910. Day. i Jan. 1 Feb. Mar. Apr. May. [ .Tuno. 1 112 130 144 150 158 193 236 245 265 282 348 378 570 793 1090 1200 1240 1370 1470 1600 1540 1300 968 750 421 333 282 245 197 165 158 127 130 158 193 201 193 177 158 140 124 109 90 87 84 80 74 82 82 92 94 109 112 92 87 90 109 824 1200 1580 1470 1300 1180 1050 903 855 596 512 386 340 260 201 169 158 147 144 140 130 133 140 136 127 124 115 109 100 97 92 92 90 87 80 67 58 92 SO 62 54 52 56 62 64 92 97 103 150 240 333 378 312 236 158 92 80 72 56 50 67 72 58 52 140 534 764 793 ()09 558 570 678 6;?6 903 1050 1280 1180 871 692 439 333 232 193 378 2 236 3 218 4 232 5 245 6 214 7 177 8 147 9 154 10 124 11 97 12. 94 13 87 14 92 is::::::::::::::::::::.:.:-:::::-:...:.: 87 16 82 17 82 18 58 19 58 20 RR 21 348 I ^^ 22 23 678 1300 1160 1600 1540 1310 1000 750 570 479 64 54 24 25 52 54 26 27 28 72 28 70 29 56 30 50 31 Total 18333 5098 12866 3460 23242 3494 Open water rating was used for these months; discharge may be too large. 1G8 Saxgamox River. Bating Table for South Forh of Sangamon River near Taylorville, III. for 1908 and 1909. Gage height- Feet. Dis- charge — Sec. ft. Gage Dis- height — charge — Feet. Sec. ft. Gage Dis- height— charge- Feet. Sec. ft. Gage Dis- height— charge- Feet. See. ft. 00. 3 30 Js6 6 60 654 9.90 10.00 10.10 in 90 1978 .10 20- 5 5 6 3.40 3 50 93 100 e.To 6 80 690 726 2020 2065 30 3 60 . . 108 6 90 762 .. 2110 .40 .50 60 3.70 3.80 3 90 116 124 132 7.00 7.10 7.20 7.30 7.40 7.50 7.60 7.70 7.80 7.90 8 00 800 10.30 838 1 10.40 876 I 10.50 914 ! 10.60 952 10.70 990 1 10.80 1030 1 1'^ ^(^ 2155 2200 2245 70 6 6 4 00. . . . 140 .. 2290 .80 .90 1 00 4.10 4.20 4 30 150 160 171 2335 2380 2425 1 10 8 9 10 12 14 16 4.40 4 50 183 196 1070 1110 11 00 . 2470 1.20 11 10 . ... 2515 1.30 1.40 4.60 4.70 4.80 4.90 5.00 5.10 5.20 5.30 5.40 5.50 5 60 209 223 238 253 269 286 304 322 241 361 381 1150 1190 11.20 11.30....... 11.40 11.50 11 60 2560 .... 2605 1.50 1 60 8 10 8 20 1230 1270 2650 2695 1 70 18 20 22 8 30. 1310 2740 1.80 8 40 ... . 1350 11.70 11.80 11.90 12.00 12.10 12.20 12.30 12.40 12.50 12.60 12.70 12.80 12.90 13 00 .. 2785 1 90 8 50 1390 2830 2.00 24 8.60 8.70 8.80 8 90 1432 1474 1516 1558" . . 2875 2 10. . . . 27 2920 2.20 30 .. 2967 2 30 33 3014 2.40 37 5.70 5.80 5.90 6.00 6.10 6.20 6.30 6.40 6 50 402 424 447 470 496 524 554 586 fi9n 9.00 9.10 9.20 9.30 9.40 9.50 9.eo 9.70 9 80 1600 ...... 1W2 1684 1726 1768 1810 1852 1894 1936 . 3061 2 50. . 41 3108 2.60 45 . 3155 2.70 2.80 50 55 3202 . 3249 2 90. .. 60 3296 3 00- 66 • 3343 13.10 3 20 72 79 3390 Note.— The above table is not applicable for ice or obstructed channel conditions. It is based on six discharge measurements made during 1908 and 1909 and the discharge curve from Sept. 2, 1909, to June 30,»1910. Below one foot the table is approximate. 169 Sangamon Eiver. Baiing Table for South Fork of Sangamon River near TaylorviUc, III. for 1909 and 1910. height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- See, ft. Gage height- Feet. Dis- charge- Sec, ft. Gage height- Feet. Dis- charge- Sec, ft. 1 00 ..'..'...'. 9 10 3 80 87 6 60 312 9.40 9.50 9.60 9.70 9.80 9.90 10.00 10.10 10.20 10.30 10.40 10.50 10.60 10.70 10.80 10.90 11.00 11.10 11.20 11.30 11.40 11.50 11.60 11.70 11.80 11.90 12.00 985 1 10 3 90 92 6.70 6.80 6.90 7.00 7.10 7.20 7.30 7.40 7.50 7.60 7.70 7.80 7.90 8 00 . .. 326 340 355 370 386 403 421 439 459 479 501 523 546 570 1019 1 20 4 00 97 1054 1 30 4 10 103 1089 1 40 4 20 . . 109 1126 1 50- 4 30 115 1163 1 60 4 40 121 1200 1 70 4 50. . . . .. . 127 .... 1238 1 80 4 60 133 1276 1.90 2 00 . 13 15 4.70 4 80 140 147 1314 1354 2 10 18 21 4 90 154 1394 2 20 5.00 5 10. 161 169 1434 2 30 24 1474 2 40 27 5 20 177 1516 2 50. ... . . 30 5 30 185 8.10 8 20 596 622 1558 2 60 34 5 40 193 1600 2.70 2 80 38 42 5.50 5 60 ........ 201 209 S.30 8 40 650 678 1642 1684 2 90 46 5.70 5 80. . . . 218 227 8 50 706 1726 3 00. . . . . 50 8 60 735 . . . 1768 3.10 3 20 - 54 58 5.90 6.00 6.10 6.20 6.30 6.40 6 50 236 245 255 265 276 287 9Qq 8.70 8 80 764 . 793 1810 1852 3.30 3 40 62 67 8.90 9.00 9.10 9 20 824 855 887 919 1894 1936 3 50. . . .... 72 1978 3 60 2()9() 3 70 S2 9.30 951 Note.— The above table is not applicable for ice or obstructed channel conditions. It is based on 10 •discharge measurements made during 1909-1910. 170 Sangamox River. MontliUj Discharge of South Fork of Sangamon Rive?' near Taylorville, III, for 1908 to 1910. (Drainage area 427 square miles.) Discharge in Second-feet. Run-off. Month. Maximum. Minimum. Mean. Second-feet per square mile. Depth i inches. Accuracy. 1908 2160 1390 1310 3300 238 424 150 150 238 16 8 5 5 5 6 6 1140 654 707 1500 78.3 18.1 7.7 5.7 5.5 6.7 7.7 19.5* 552 192 746 465 303 736 26.3 10.9 36.1 143 120 279 591 182 415 750 116 2.67 1.53 1.66 3.51 .183 .042 .018 .013 .013 .016 .018 .046 1.29 .450 1.75 1.09 .710 1.72 .062 .026 .085 .335 .281 .654 1.38 .426 .972 1.76 .272 1.89 1.76 1.85 4.05 .20 .05 .02 .01 .01 .02 .02 .05 1.34 .52 1.95 1.26 .79 1.98 .07 .03 .10 .37 .32 8.78 1.59 .44 1.12 2.03 .30 B March .. .. B \pril B Mav C June B July D Auffust 37 8 7 12 12 100 1430 620 2020 1470 654 2060 C C October C C December C 1909 C Fphriinrv B March 86 69 93 28 50 A B Mav B June A July B D 36 165 430 7 5 21 C C B T)or>omhor D 1910 January 1600 1200 1580 1600 378 112 74 90 52 50 C February - - A March " A May A .Tune . . B 171 CAHOKIA CKEEK. Description. The drainage area of Cahokia creek lies in the southwestern part of the State of Illinois. The creek rises in the southern part of, and about on line between Montgomery and Macoupin counties, flows in a south- westerly direction diagonally across the southeast corner of Macoupin county and the northwest portion of Madison county, past Edwardsville, through East St. Louis, 111., and empties into the Mississippi river. The creek is very crooked and its length is approximately fifty-five miles. The total drainage area is 375 square miles. Its principal tributary is Indian creek, which enters from the right bank about three-fourths of a mile north of the Wabash Eailroad bridge near Poag, 111. The drainage basin is long and narrow, being about forty-five miles in length ; the average width is about eight miles; and maximum width is about twelve miles. The ground is low, level, or undulating, with a cliain of bluffs crossing the drainage area just north of Poag. 111. The sources of the creek are about 680 feet, and the mouth about 385 feet above sea level. There are no forested areas in this drainage basin. The mean annual rainfall is about forty inches. In general, the winter conditions are mild. The opportunities for storage and water power development have not been investigated, but are undoubtedly not worthy of consideration. Flood control, especially in its relation to the proposed flood protection works of the East Side Levee and Sanitary District of East St. Louis, 111., is the most important problem under consideration at present in connection with this drainage basin. One gagins: station has been maintained in this drainage basin : Cahokia creek near Poag, 111., 1909, 1910. CAiroKiA Creek near Poag, III. This station is located at the Wabash Railroad bridge, about three- fourths of a mile northeast of the Wabash Railroad station at Poag, 111. It was established Dec. 13, 1909, to obtain data for use in studying drainage and flood control problems. The data collected will bo used by the East Side Levee and Sanitary District of East St. Louis, TIL, in its study of flood control and preveuiion at that place. 172 Indian creek is tributary from the right bank about three-fourths of a mile above the section. The total drainage area above the gaging station is 259 square miles, as determined by the East Side Levee and Sanitary District. The datum of the gage has remained unchanged since its installation ; the records are accurate and reliable. The data at present are insufficient for a determination of the dailv flow. Caiiokia Creek. Discharge Mcasuremenis of Cdiolia Creel- near Poag, III. Date. Hj'drographer. Area of Mean Gage Width- section- velocity height- Feet. Sq. ft. —Ft. per sec. Feet. Dis- charge- Sec, ft. 1910 March March April May May H. J. Jackson. H. J. Jackson. H.J. Jackson. W. H. Morgan W. H. Morgan 48 108 0.47 3.43 47 101 0.46 3.33 47 96 0.46 3.10 (a) 89 716 1.54 12.45 (b)115 847 1.56 13.53 50 46 44 HOG 1320 (a) and (b) East Side Levee and Sanitary District. 173 Cahokia Creek. Daily Gage Height m Feet of Cahokia Creek near Poag, III., for 1909 and 1910. 1909. Day. Dec. J ! 2 . 3 4 . . 5 6 7 .j S 9 . 11 ... . 13 12 14. 11 8 5 16 7 17 6 2 IS .... 5 19 3 6 20 3 21 2 8 22 2 3 23 2 1 2 25 . . . 1 9 26 1 ^ 27 1 9 28 1 8 29 1 8 30 1 7 31 2 Gage heights Dec. 18-31 were affected by ice conditions. 1T4 Cahokia Creek. Daily Gage Height in Feet of Cahokia Creek near Poag, III., for 1909 and 1910. 1910. Day. Jan. Feb Mar. Apr. May. June. 1 2 3 4 .") 6 S 9 10 11 12 13 14 15 Ifi 17 18 19 20 21 22 23 24 25 26 27 2S 29 30 31 2.3 2.3 4.0 5.0 4.2 3.8 3.3 3.1 3.0 2.8 2.6 2.4 2.3 2.2 5.0 4.0 3.5 3.4 3.3 3.2 3.0 2.9 2.8 2.7 2.6 4.0 11.8 12.9 16.6 14.5 12.3 9.0 6.6 5.0 4.3 4.2 3.9 3.6 3.4 3.2 3.1 .0 3.0 2.9 2.9 2.8 2.8 2.7 3.4 3.3 3.3 3.3 3.2 3.2 3.2 3.1 3.1 3.1 3.0 2.9 2.8 3.1 3.2 11. 1 6.6 5.5- 4.5 4,1 3.9 3.7 3.5 3.4 3.5 ■ 4.5 4.1 3.7 3.4 3.3 8.8 12.8 10.3 6.1 5.0 6.5 7.7 6.1 5.0 7.9 8.5 7.1 5.6 4.2 4.0 4.0 4.2 3.8 3 4.2 3.5 3.4 12.1 13.2 9.5 5.6 4.0 6.7 5.0 4.4 4.0 3.6 4.1 5.4 6.3 4.2 3,7 3.4 3.2 3.0 2.8 2.6 2.4 3.5 3.0 4.0 4.2 3.2 2.8 LITTLE WABASH EIVEE. E'ESCRIPTIOX. The drainage basin of the Little Wabash river lies in the southeastern part of the State of Illinois. The river rises in the southwestern corner of Coles county, flows slightly southeastward and empties into the Wabash river, about fifteen miles above its mouth, at the boundary line between White and Gallatin counties. The Skillet fork is the only tributary of any size, joining it not far from its mouth. The Little Wabash is about 150 miles in length. The total drainage area is 3,200 square miles. The basin is shaped something like a parallelogram with the long sides north and south. The country is level or undulating. The soil is a rich black loam in the northern part; in the southern part it gradually changes into a yellow clay or '^mulatto soil." The elevation of the sources of the river is about 720 feet; at" its mouth it is about 340 feet above sea level. There are no forested areas in this basin. The annual rainfall is about forty-two inches. The winter conditions are mild ; ice does not form very thick, snowfall is light and does not last long. Storage possibilities have not been investigated, although the growing demand for water and for flood control makes storage a subject of con- siderable importance. There are no opportunities for water power development anywhere in this basin. Drainage and flood control are subjects of considerable interest along this river. The LTnited States Department of Agriculture is making a study of conditions with a view of developing a plan for reclaiming and protecting areas that are overflowed during floods. Portions of the river have already been mapped for use in this study. The following gaging stations are being maintained in this basin : Little Wabash river near Clay City, 1908, 1909, 1910. Little Wabash river near Golden Gate, 1908, 1909, 1910. Little Wabash at Canni, 1908, 1909, 1910. Skillet fork near Wayne City, 1908, 1909, 1910. Skillet fork near Mill Shoals, 1908, 1909, 1910. 176 Little Wabash Kiver xear Clay City, III. This station is located at the B. & 0. S. W. Eailroad bridge, about two miles east of Clay City, 111. It was established Oct. 3, 1908, for the purpose of obtaining data for use in studying problems of drainage and flood control. Big Muddy creek is tributary from the left bank about five miles below the section. The total drainage area above the gaging station is about 808 square miles. This station is at the toe of a horseshoe bend in the river and thsf ground inside the bend along the railroad track is low. During high water the Little Wabash river overflows into Little Muddy creek, a brancli of Big Muddy creek, and in extreme high water also overflows into Big Muddy creek, forming at such times a sheet of water about four miles in wddth along the railroad embankment. The discharge of the Little Wabash at the gaging station during extreme high water can not be determined on account of the above conditions, for the flow which passes the gaging station includes some of the flood waters of Big Muddy creek. The datum of the gage has remained unchanged since its installation, and the records are reliable and accurate. Springs feed the river near the gaging station and the river has not been known to go dry at this point. The flood of Feb. 8, 1909, reached a height of 23.7 feet on the gage. This station is maintained principally to determine the height of high water and the duration of floods. On account of insufficient data and poor condititDns at the section, the daily discharge could not be determined. Little Wabash Rivek. Discharge Measurements of Little Wahasli River near Clay City, III., for 1908 to 1910. Dale. Hydros^apher. Width- Feet. Area of section— Sq. ft. Mean velocity -Ft. per sec. Gage height- Feet. Dis- charge- Sec, ft. Mav 7 n. J. Jackson 59 50 1703 fi4 64 26fi 182 6967 .-^42 .341 0.59 0.10 1.40 0.93 0.88 7.62 6.10 *1S.73 8.92 8.89 157 Novomher 6 H J.. Jackson 18 1910 March 4 9756 March 11 H. J. Jackson 317 March 11 302 inchides flow of IJttle Muddy and Big Muddy Creeks. 177 Little Wabash Kiver. Daihj Gage Height in Feet of Little Wabash lliver near Clay City, III. for 1908 to 1910. 1908. Day. Oct. Nov. Dec. 5.9 5.9 5.9 o.y 5.9 5.9 5.9 5.9 5.9 5.9 5.9 5.9 5.9 5.8 6.3 5.8 6.3 5.8 7.8 5.S 7.3 5.x 7.3 5.8 *6.8 5.8 6.3 5.8 6.3 5.8 6.1 5.8 6.1 5.8 6.1 5.8 6.1 5.8 *6.0 5.8 6.0 5.8 6.0 5.8 6.0 5.8 6.0 5.8 6.0 5.8 6.0 5.8 6.0 5.8 6.0 5.8 5.9 5.8 5.9 5.8 5.9 6.0 5.9 (5 5.9 6.0 5.9 6.0 5.9 *6.2 5.9 6.'^ 5.9 5.9 * Interpolated. —12 S W 178 Little Wabash Eiver. Daily Gage Height in Feet of Little Wabash River near Clay City, 111., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 5.9 11.9 11.2 7.7 9.5 8.6 8.7 6.0 6.0 6.2 7.1 2 5.9 9.5 10.9 7 7 *8.9 10.2 7.9 6.0 6.0 6.2 7.0 3 5.9 8.0 8.8 7^6 8.3 9.2 7.3 ""k'X 6.0 *6.0 6.1 6.9 4 5.9 7.0 8.2 *7.6 8.1 9.2 *7.1 7.3 6.0 6.0 6.1 6.8 5 5.9 7.0 8.2 7.5 7.8 12.5 *6.8 7.0 *6.0 6.0 6.1 6.7 € 5.9 6.9 7.9 7.2 7.7 *11.6 6.6 6.8 6.0 6.0 6.0 6.65 7 5.9 21.3 *7.9 8.3 7.6 10.6 10.2 6.6 6.0 5.9 6.25 6.95 8 5.9 23.7 7.9 12.7 7.4 9.4 14.7 *6.4 6.0 5.9 6.7 7.1 9 5.9 22.9 18.3 17.4 *8.2 8.6 16.8 6.3 6.0 5.9 6.6 7.1 10 *5.9 9.2 18.7 18.0 9.1 8.5 17.2 6.3 *5.8 6.3 7.1 11 5.9 9.2 18.8 *18.0 15.4 8.3 *17.6 6.3 5.8 6.2 7.4 12 6.0 11.3 18.8 17.9 15.1 10.9 18.0 6.3 5.8 6.8 12.4 13 6.0 8.6 18.6 .12.5 11.9 *10.8 17.8 6.3 5.8 7.5 17.05 14 6.0 *10.8 *17.2 18.1 10.0 10.6 17.6 6.3 ""h'A 5.8 7.4 18.1 15 6.0 13.0 15.9 18.6 12.6 12.6 17.8 *6.2 6.2 5.8 7.3 18.15 16 6.0 16.7 11.5 18.9 *11.3 10.8 18.1 6.2 6.0 5.8 7.4 18.4 17 *6.0 17.0 9.1 18.6 10.0 8.4 18.1 6.2 6.0 *6.1 9.4 17.8 18 6.0 17.0 8 9 *16.1 8.9 8.5 *18.0 6.2 6.0 6.4 10.7 13.4 19 6.0 13.7 8.1 13.6 8.3 9.5 18.0 6.2 *6.0 6.6 10.5 11.0 20 6.0 16.4 8.1 13.8 8.0 *8.4 17.8 6.2 6.0 *8.0 9.05 9.8 21 6.0 *17.2 *8.0 14.5 7.6 7.4 15.0 6.2 6.0 9.3 9.0 8.4 22 6.0 18.0 7.9 16.3 7.3 7.4 10.3 *6.2 6.2 8.6 7.7 8.4 23 6.0 18.5 7.6 17.3 *7.2 7.5 8.3 6.2 7.6 7.6 10.7 7.9 24 *6.7 18.5 7.6 17.4 7.1 7.5 7.8 6.2 9.1 *7.6 14.0 7.4 25 7.4 18.4 7.6 *15.4 7.0 7.8 *7.6 6.0 8.2 7.7 15 7.4 26 7.4 18.2 8.9 13.3 7.0 9.5 7.4 6.0 *7.6 7.8 11.9 7.25 27 7.4 18.2 9.2 9.9 7.6 *9.8 7.2 6.0 7.0 7.7 9.6 7.1 28 7.0 *]8.0 *8.8 8.9 12.3 10.1 7.1 6.0 6.8 7.0 8.1 7.1 29 6.9 8.3 10.1 10.8 9.3 7 1 *6.0 6.2 6.8 7.6 7.0 30 6.9 7.9 12.0 *10.1 8.3 7;i 6.0 6.1 6.4 7.25 6.9 31 *9.4 7.8 *9.4 6.0 *6.3 6 9 ♦Interpolated. Gage height.s Dec. 22-31 to top of ice. 179 Little Wabasie Eiver. Daily Gage Ileiglit in Feet of Little Wahash River near Clay City, III., for 190S to 1910. 1910. Dav. Jan. Feb. Mar. Apr. May. June. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 6.9 8.4 18.75 6.7 7.9 7.0 8.9 19.5 6.7 7.4 7.1 8.9 19.0 6.7 7.1 7.1 9.45 18.7 6.7 7.1 8.4 11.2 18.5 6.9 10.55 8.9 10.2 18.3 7.0 10.8 9.3 9.0 17.0 7.0 9.0 9.3 8.4 13.35 7.0 9.4 9.3 7.85 11.3 7.0 11.6 7.9 7.4 9.3 7.0 12.5 7.3 7.55 8.95 6.8 11.5 7.3 7.45 8.5 6.6 9.7 10.05 7.3 8.3 6.55 13.5 15.9 7.3 8.0 6.55 15.4 18.0 7.9 7.9 6.55 12.5 18.2 9.4 7.7 7.0 9.7 18.2 9.4 / .0 8.6 8.6 17.9 9.4 7.4 9.6 8.15 17.55 9.2 7.3 9.9 7.9 17.8 9.2 7.2 9.3 7.8 18.0 . 9.2 7.1 8.4 7.6 17.45 10.2 7.1 8.0 7.6 14.0 12.7 7.1 ( ./ 7.5 10.4 13.3 7.3 7.4 12.3 9.5 12.5 7.3 7.3 16.1 9.0 10.2 7.3 7.4 17.1 8.9 14.45 7.0 / . ( 17.3 9.5 18.8 6.8 8.6 14.1 9.95 9.0 8.9 6.8 6.7 6.7 9.0 8.2 13.4 8.9 9.5 10.4 8.7 8.0 10.2 10.1 8.4 7.9 7.4 7.3 7.3 7.2 7.0 6.8 6.7 6.6 6.5 6.4 6.4 6.4 6.35 6.3 6.6 6.6 12.0 9.0 Gage heights May 15 and June 25 were obtained by interpolation. Little Wabash Eiver near Golden" Gate, III. This station is located at the Southern Eailroad bridge, about one mile west of Golden Gate, 111. It was established Aug. 17, 1908, for the purpose of collecting data for use in drainage and flood control investigations. Elm creek is tributary from the right bank about one mile above the station. The total drainage area above the gaging section is about 1,780 square miles. The datum of the gage has not been changed since its installation, and the records are accurate and reliable. The stream does not go dry at this point. This station is affected by backwater from the Wabash river. Therefore, the relationship between gage heights and discharge is variable and hence daily discharges could not be determined from the data at present available. ISO Little Wabash Eiver. Discharge Measurements of Little Wabash River near Golden Gate, III., for 1908 to 1910. Date. Hydrographer. Width- Feet. Area of section— Sq. ft. Mean velocity —Ft. per sec. Gage height- Feet. Dis- charge- Sec, ft. July 17 May 9 1909 March 10 May 4 May 5 November 11 1910 March 2 March 7 March 9 March 12 March 14 March 15 March 16 March 17 R.J. Taylor Hidinger & Baxter, U. S. Dept. of Agriculture Wm. M. O'Neill H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson (0 1438 1220 88 85 1228 1252 1239 1215 207 155 124 93 301 17200 9748 578 550 311 9415 13079 11889 7647 2362 1758 1067 630 0.06 2.09 0.99 0.61 0.56 0.19 0.97 0.73 0.71 0,55 0.88 0.66 0.70 0.65 2.6 28.5 23.50 6.00 5.60 2.80 23.59 25.42 24.56 22.23 18.65 15.50 10.25 6.48 *35900 9654 351 306 60 9150 9520 8395 4241 2085 1161 747 410 * Free flow, no backwater. This measurement was taken after the heavy rain storm of May 3-8, 1908. 181 Little Wabash IIiver. Daihi Gage II eight in Feet of JAttJe Wahasli llivev for 190S to 1910. near Golden Gate, III. 190S. Day. Aug. Sept. Oct. Nov. Dec. 1 2.0 2.0 1.9 1.9 1.8 1.9 1.9 1.9 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.7 1.8 1.8 1.7 1.7 1.7 1.7 1.7 1.7 1.8 l.S 2.0 2.0 1.9 2.0 . 2.0 1.9 1.9 1.9 2.0 2.0 2.0 2.0 2.0 2.5 2.1 2.1 2.1 2.0 2.1 2.0 2.0 2.0 2.2 2.1 2.0 1.9 1.9 1.9 1.8 1.8 1.8 1.8 1.9 1.9 1.9 1.8 1.9 1.9 1.9 1.9 2.0 2.0 2.0 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.1 2.1 2.1 2.1 2.3 2.2 2.2 2.2 2.5 2.6 2.7 2.7 2.7 2.6 2 . . 2 6 3 2 6 4 2 5 5 .3 5 6 3.5 3 4 8 3 1 9 . ... 2 7 10 2 5 11 2.5 12 2 4 13 2 3 14 . . . ... 2 2 15 2 2 16 2.1 17 1,9 2.0 2.0 2.1 2.2 2.2 2.0 2.1 2.1 2.0 2.2 2.2 2.0 2.0 2.0 2 1 18 2 1 19 . . . 2 1 20 2 21 2.0 22 1 9 23 1 9 24 1 9 25 26 1 7 27 1 6 28 29 J - 30 1 8 31 1 8 183 Little Wabash Eiver. Daily Gage Height In Feet of Little Wahash River for 1908 to 1910. near Golden Gate, III., 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 1.9 2.8 22.8 4.8 11.0 _ _ 4.1 2.5 2.6 3 3 4.7 2 1.8 2.7 22.4- 4.5 9.1 5^3 7 7 4.0 2.6 2 4 3.0 4*3 3 1.9 3.3 21.8 3.8 8.0 5.1 6:9 4.9 2.4 2 3 2 6 4^0 4 1.8 4.4 21.0 4.3 7.5 6.9 5.5 5.8 2.3 2 1 2.5 3 8 5 1.7 4.8 19.2 4.1 6.1 10.9 4.5 4.9 2.3 2 3 2.4 40 6 1.7 4.0 16.1 4.1 5.7 14.4 4.0 4.7 2.3 2 2 2 7 4^1 7 \l 3.9 16.1 5.8 5.2 14.9 3.5 3.8 2.2 2.2 2 4 4^2 8 1.6 4.1 17.7 4.2 5.1 15.5 *5.4 3.4 2.2 2.2 2.3 3 7 9 1.6 5.9 22.-8 5.8 5.7 14.5 7.3 3.2 2.3 2 1 2.4 4^0 10 1.6 8.9 22.6 11.1 5.8 11.5 9.9 3.7 3.5 2 2 2 4 4^2 11 1.6 7.5 24.8 12.1 5.2 9.7 12.7 2.9 4.3 2.2 2.7 4^3 12 1.6 7.6 25.8 13.8 8.0 6.6 13.8 2.8 6 2 2 1 3 4 6^4 13 1.6 7.7 25.2 15.4 8.7 7.8 14.2 3.0 5.9 2 1 3!7 13.6 14 1.6 10.6 25.1 16.6 8.9 11.0 15.3 3.3 4 9 2 3 8 16.3 15 1.6 15.5 24.8 17.6 9.0 9.9 15.5 3.0 4.6 2 1 6 1 17.3 16 1.6 16.0 24.5 18.1 8.4 9.1 17.4 2.9 3.6 1.9 6.1 18!4 17 1.6 17.0 24.0 18.1 9.0 9.0 18.2 3.0 3.0 2.2 19^1 18 1.6 16.1 23.5 17.8 7.2 8.0 18.3 2.9 2.7 2.5 9^0 19^1 19 1.6 16.1 22.8 18.2 7.3 6.4 18.3 2.7 2.6 2.7 10 19^0 20 1.7 18.0 21.6 20.6 7.2 5.9 18.2 2.6 2.5 2 9 9!8 19^0 21 1.7 18.7 19.5 22.1 7.1 5.8 17.6 2.5 2.4 3 6 7 5 18.8 22 1.9 18.8 17.3 22.4 6.9 6.1 17.1 2.4 2.6 3 7 6^7 17^9 23 2.1 19.1 13.3 22.2 4.9 5.1 16.9 2.5 3.1 5 6 6 14.3 24 2.0 20.9 9.5 21.8 4.1 6.9 16.7 2.4 3.1 5 7 82 8^5 25 2.3 22.0 5.8 21.8 4.0 9.1 15.7 2.3 3.0 6.1 12 7.5 26 2.8 22.5 5.3 21.8 4.2 10.1 10.5 2.3 4.9 5.3 13.2 5.4 27 2.7 23.5 5.2 19.0 4.9 9.1 10.4 2.4 4 6 4 7 12.8 5^4 4.6 28 3.2 22.8 6.6 18.0 6.7 8.8 10.6 2.3 3.6 4^6 11 1 29 3.9 • 7.0 17.3 8.3 8.2 4.7 3.3 3.5 4.5 8^0 4 1 30 3.6 6.6 9.3 9.9 8.5 4.7 2.4 3.1 4.0 6.7 4 31 3.0 5.5 ' • ' 4.4 2.5 3.6 1 3.9 * Interpolated. Gage heiglits Dec. 8-n were afTected by ice condition.s 183 Little Wabash Eiver. Daily Gage Ilciglit in Feet of Little Wabash River near Golden Gate, III. .for 1908 to 1910. 1910. Daj'. Jan. Feb. Mar. Apr. 1 May. i June. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 3.7 •7.7 22.2 3.3 6.5 4.7 6.9 23.3 3.0 6.0 5.1 6.2 24.3 3.3 6.5 5.2 5.9 25.4 3.2 5.3 5.3 7.2 25.8 3.1 4.7 6.2 9.5 25.8 3.0 4.3 8.0 9.0 25.5 3.4 7.3 7.4 25.1 3.5 8.1 7.3 6.9 24.7 3.8 6.7 7.0 6.0 24.3 3.8 5.6 6.6 5.4 23.6 3.4 / .0 5.0 5.2 22.7 3.8 8.9 8.0 4.3 21.3 5.7 / .0 14.8 4.5 19.7 5.0 7.0 16.5 4.5 16.7- 4.6 11.2 17.2 4.5 12.4 5.4 11.5 17.6 4.4 7.6 7.4 9.9 18.0 5.5 4.9 9.7 7.5 18.5 5.9 4.6 12.0 7.4 19.6 7.1 4.4 11.5 6.5 .20.3 7.5 4.1 9.9 5.1 20.3 9.4 4.1 8.1 4.5 20.5 12.9 4.1 6.5 4.6 20.3 14.6 4.0 6.0 7.9 19.7 15.4 3.9 5.5 9.9 18.8 15.8 3.8 5.6 12.1 16.5 17.9 3.9 6.0 12.6 12.5 20.1 3.8 6.5 13.0 9 8 3 6 6 7 13 9 3 5 7 11 5 8.9 3.4 9.0 7.0 6.1 6.2 5.1 4.4 4.2 4.3 6.5 6.6 5.5 4.6 4.1 4.1 4.7 4.3 3.9 3.5 3.3 3.1 3.0 3.0 5.9 5.4 4.9 4.2 3.5 3.0 3.5 4.4 5.4 Gage heights Jan. 1-12 were affected by ice conditions. Little Wabash Eiver at Carmi, III. This station is located at the highway bridge in the northeastern part of Carmi, 111., about one-fourth mile below the Big Four and L. & N. Eailroad bridge. It was established Oct. 9, 1908, to obtain data for use in studying drainage, flood control and levee construction. Skillet Fork river is tributary on the right bank about four and one- half miles above the station. The drainage area above the gaging section is about 3,090 square miles. The relation between discharge and gage height at this station is affected by backwater from the Wabash and Ohio rivers, especially during extreme floods. The datum of the gage has remained unchanged since its installation. The records are accurate and reliable, but are affected by backwater, as stated above. The following high water marks liave been preserved at this station : 1875, gage height 33.5 feet; about 1895, gage height 34 feet; 1897, gage 184 height 34.0 feet; and 1898, gage height 36 feet; all based on present gage datum. These high water records are accurate and authentic. There is some possibility that the dates may be slightly in error. On account of l)ackwater conditions at this station the daily discharge cannot be determined with the data at present available. Little Wabash Eiver. Discharge Measiiremcnfs of Little Wahash River at Carmi, III., for 1908 to 1910. Date. Hydrographer. Width- Feet. Area cf section — Sq. ft. Mean velocit V —Ft. per sec. Gage height- Feet. Dis- charge- Sec, ft. 1909 ]Mav 1 May 2 November 12 1910 June 10|r. F. Bailev I H. J.Jackson. H.J.Jackson. H.J.Jackson. 222 2887 2.13 13.30 187 1Q82 1.98 7.61 125 115 0.57 1.88 156 324 2.33 3.54 4S76 2139 6.) Little Wabash i^iVEK. Daily Gage Height in Feet of Little WahasJi Eirer at Carmi, III. for 1908 to 1910. 1908. Day. Oct. Nov. Dec. 1 1 .7 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1 .7 1 .7 1.7 1 .7 1 .7 1^7 1.7 i;7 2.0 2.0 2.1 2.1 2.1 2.1 2.0 2 2 . 2 3 1 9 4 1 9 1 9 fi 1 9 2 S 2 2 9 2.2 10 . 2 2 11 2.1 12 1.7 1.7 1.7 1.7 l.S 1.8 1.8 1.8 1.8 2.1 1.9 1.8 1.8 1> 1.7 1.7 1.7 1.7 1.7 2 13 2 14 2 15 1.9 16 1 9 17 1 .9 18 1 9 19 1.9 20 1 9 21 1 9 22 1.9 23 . 1 9 24 1.9 2.-, 1 9 26 1.8 27 . 1 8 28 1.8 29 1 8 30 1.9 31 1 9 185 Little Wabash Eiver. Daily Gage Height in Feet of Little Wabash Biver at Carmi, III., for 1908 to 1910. 1909. Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 1.8 2.3 23.3 3.2 12.7 4.8 4.6 2.4 1.8 2.2 2.3 3.4 2 1.8 2.3 23.65 2.9 7.75 3.8 4.1 2.6 1.8 2.1 2.2 2.85 3 1.9 2.2 23.65 2.7 5.4 3.2 3.7 3.5 1.8 2.0 2.1 2.6 4 1.9 2.5 23.45 2.6 4.75 5.8 3.5 3.7 1.8 2.0 2.0 2.45 5 2.3 3.1 22.9 2.5 4.6 6.8 3.0 3.7 1.8 1.9 2.0 2.4 6 2.6 3.0 21.7 2.4 4.7 9.0 2.6 3.3 1.8 1.9 1.9 2.. 35 7 2.4 2.7 19.45 3.0 5.2 10.8 2.5 2.6 1.8 1.8 1.9 2.35 8 2.2 2.7 17.75 4.0 5.8 11.7 2.7 2.4 1.8 1.8 1.9 2.3 9 2.0 2.9 22.35 3.9 6.5 11.7 2.5 2.2 1.8 1.8 1.9 2.25 10 2.0 3.3 23.0 4.0 6.9 10.6 3.3 2.1 2.2 1.8 1.9 2.3 11 2.2 4.5 22.8 5.8 7.1 7.9 6.1 2.1 2.4 1.7 1.8 2.8 12 2.3 4.9 23.85 6.9 6.9 5.2 7.9 2.0 2.4 1.7 1.8 4.5 13 2.1 5.Z 25.55 9.4 6.8 7.1 16.0 2.0 3.0 1.7 2.0 6.3 14 1.9 8.15 26.9 12.9 7.5 9.1 15.7 1.9 3.3 1.7 2.2 10.05 15 1.9 12.4 27.75 13.7 7.5 9.3 14.0 1.9 3.0 1.7 2.3 12.1 16 1.9 13.45 28.1 14.5 6.5 9.1 19.9 1.9 2.6 1.7 3.0 13.05 17 1.9 13.7 28.05 15.2 5.3 8.3 18.6 1.9 2.4 1.7 4.15 13.9 18 1.9 14.2 27.6 15.75 5.5 7.1 16.4 1.9 2.2 1.7 4.7 14.35 19 1.9 16.45 27.0 16.25 5.1 5.3 14.1 1.9 2.1 1.8 5.3 14.75 20 1.8 17.65 26.1 19.4 4.2 3.8 12.7 1.9 2.0 1.9 6.5 14.75 21 1.9 17.2 24.9 20.85 3.4 3.4 11. S 1.9 1.9 2.0 6.5 13.9 22 1.9 16.85 23.15 21.4 3.0 3.4 11.0 1.8 2.1 2.0 5.4 13.25 23 1.9 20.8 20.5 21.5 2.7 3.4 10.5 1.8 2.0 2.4 4.3 12.5 24 2.0 22.3 15.95 21.6 2.5 3.3 10.2 1.8 2.0 2.7 3.65 10.0 25 2.0 21.95 9.8 21.55 2.6 4.7 9.8 1.8 2.1 3.0 5.2 6 26 2.3 21.8 5.0 21.3 2.6 6.8 8.8 1.8 2.4 3.0 7.3 3.8 27 2.4 22.15 3.55 20.5 5.5 6.3 6.0 1.8 2.7 3.0 8.4 3.15 28 2.4 22.7 3.2 19.2 5.2 5.5 3.6 1.8 2.7 2.9 7.95 2.95 29 2.5 3.45 16.9 5.0 5.0 2.9 1.8 2.5 2.7 6.55 3.15 30 2.5 3.7 17.05 6.3 4.7 2.6 1.8 2.3 2.6 4.7 3.15 31 2.4 3.4 6.0 2.4 1.8 2.4 3.0 Gage heights Jan. 1-13 and Dec. 8-31 were affected by ice conditions. 186 Little Wabash Eiver. Daily Gage Height in Feet of Little ^Ya'basl^ River at Carmi, III for 1908 to 1910. 1910. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27-. 28.. 29-. 30.. 31.. Day. Jan. Feb. Mar. 2.3 2.4 2.5 2.7 3.5 4.7 4.9 5.0 5.45 5.1 4.55 3.5 6.3 11.15 12.45 13.0 13.7 15.6 15.4 16.75 17.3 17.9 18.35 18.5 18.35 17.65 16.8 15.7 14.15 13.25 12.5 11.4 9.4 6.7 4.1 3.5 4.25 5.5 5.5 4.9 4.1 3.35 3.1 2.8 2.75 2.7 2.7 2.8 2.8 2.7 3.3 3.95 5.3 8.05 9.35 11.1 12.4 16.65 19.4 19.9 20.3 21.35 22.9 24.2 25.5 26.4 26.95 27.15 27.05 26.7 26.1 25.2 24.0 22.15 19.0 13.8 8.0 3.9 2.9 2.75 2.6 2.55 2.5 2.45 2.45 2.4 2.35 2.35 2.3 2.3 Apr. May. 2.25 2.25 2.25 2.25 2.2 2.2 2.15 2.15 2.2 2.3 2.35 2.55 2.7 3.0 3.3 3.45 4.65 5.35 6.95 7.8 7.55 6.3 5.0 3.95 3.65 3.55 4.3 4.8 4.85 4.75 4.65 4.55 5.25 4.55 3.6 3.1 3.05 4.3 4.75 4.0 3.7 5.05 5.55 5.05 5.65 6.35 6.55 5.55 4.3 4.0 3.45 3.05 3.25 4.25 5.1 6.5 7.45 7.75 7.65 7.3 6.4 June. 4.5 3.2.5 3.2 3.1 3.05 2.6 2.5 2.4 3.25 3.5 3.25 2.8 2.6 2.45 2.55 2.5 2.4 2.25 2.2 2.1 2.1 2.1 2.65 3.25 2.95 2.55 2.4 2.35 2.3 2.3 Skillet Fork River Js-ear Mill Shoals, III. This station is located at the B. & 0. Eailroad bridge, about one mile south of Mill Shoals, 111. It was established Oct. 9, 1908, for the purpose of obtaining data for use in studying drainage and flood control ])roblenis. Grifhn creek is tributar}- on the left bank about one and one-half miles above the station, and Haw creek is tributary on the right bank about five miles above the station. The drainage area above the ^aoinff .section IS about 912 square miles. ^ o & Tlic datum of the gage has remained unchanged since its installation, and the records are accurate and reliable. This station is affected by backwater caused by floods on the Wabash river. Sufficient data are not available at present to enable* the daily discliarge to be determined. 187 .Little Wabash River. Discharge Mcasuremenis of Skillet Fork River near Mill Slioals, III, for 1908 to 1910. Date. Hj'^drographer. Width- Feet. Area of section— 8q. ft. Mean velocity —Ft. per sec. Cage height- Feet . Dis- charge — Sec. ft. 1909 May November 1910 March March March March March March March March March March March H.J.Jackson H. J. Jackson H.J. Jackson H. J. Jackson H.J.Jackson H.J.Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson H. J. Jackson 61 19S 38 31 791 3396 1060 5856 1067 7009 1063 6632 1058 5505 1031 4124 141 1451 124 1109 91 660 70 325 ■ 59 150 l.OS 0.35 1.01 0.93 0.81 0.65 0.61 0.56 0.99 0.84 0.79 0.66 0.77 5.22 2.26 19.65 22.12 23.11 22.82 21.80 20.45 18.03 15.46 11.43 7.50 4.70 214 11 3445 5460 5644 4334 3380 2283 1443 935 519 216 117 Little WxVBAsii Eiver. Daily Gage Height in Feet of Skillet Fork River near Mill Shoals, III., for 1908 to 1910. 1908. Day. Oct. Nov. Dec. 1 .. 1 .5 1 .5 1 .5 1.5 1 .5 1.5 1 .5 1.5 1 .5 1.5 1 .5 1 .5 1 .5 1 .5 1.5 1 <\ 1 6 2 16 3 1 6 4 1 6 5 1 6 6 1 6 7 1 6 8 1 6 9 1 6 10 .* 1 6 11 1 6 12 1.5 1.5 1.5 1.5 1 5 1 6 13 1 6 14 , 1 6 15 1 6 16 1 6 17 15 iK 1 6 18 . 1.5 1 .5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5. 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.9 1.6 1.6 1.6 1.6 1 6 19 1 6 20 1 6 21 1 6 22 1 6 23 1 6 24 1 6 25 1 6 26 1 6 27 1.6 28 1 6 29 1 6 30 1 6 31 1 6 188 Little Wabash Eiver. Daily Gage Height in Feet of Sl'illet Fork River near Mill Shoals, III. for 190S to 1910. Day. Jan. Feb. Mar. Apr. Mav. June. .July. Aug. Sept . Oct. Nov. Dec. 1 1.6 3.0 21.0 4.5 11.4 5.7 4.1 5.6 1.4 2.4 2.6 3.4 2 *1.6 3.0 20.1 3.7 8.8 4.5 3.7 6.4 1.4 2.2 2.6 3.3 3 *1.6 3.2 18.0 3.5 5.2 5.6 3.5 8.9 1.4 2.2 2.4 3.2 4 1.6 3.4 14.5 3.4 4.9 9.3 3.0 8.5 1.4 2.0 2.3 3.2 1.6 3.4 13.0 3.3 4.4 13.8 2.5 7.3 1.4 2.0 2.2 3 1 6 *1.6 4.0 12.5 4.8 4.1 14.6 2.5 3.5 1.4 2.0 2 2 2.9 7 1.6 4.3 10.5 8.4 3.9 14.5 2.5 3.4 1.4 2.0 2.2 2.7 8 *1.6 4.5. 11.0 8.3 3.9 13.1 2.3 3.2 1.4 2.0 2.2 2.6 9 1.6 4.5 18.5 8.2 4.0 8.9 2.3 3.0 1.4 1.5 2.2 2.7 10 *1.6 4.9 19.8 8.4 5.6 6.8 3.8 2.8 1.7 1.5 2.2 3.5 11 1.6 5.4 23.3 6.4 6.6 4.7 5.3 2.7 1.9 1.5 2.2 3.9 12 1.6 5.8 24.1 5.5 6.2 4.2 8.1 2.5 4.7 1.8 2.2 6.3 13 1.6 6.5 24.2 7.2 5.4 6.9 13.1 2.4 4.0 1.6 2.2 12.3 14 1.6 11.4 24.4 15.5 5.3 10.9 14.7 2.1 3.7 1.6 2.2 15.0 15 1.6 15.5 24.1 16.8 5.7 13.85 14.3 2.0 3.4 1.5 4.6 15.5 16 1.6 15.9 23.6 17.9 6.5 12.2 15.0 2.0 2.8 1.5 6.6 15.9 17 1.6 16.4 23.0 18.3 7.0 8.8 11.0 1.8 2.6 1.5 6.8 16.3 18 1.6 16.9 22.6 17.8 6.0 5.9 6.3 1 7 2.4 1.6 7.6 16.4 19 1.6 17.8 21.8 17.6 5.1 4.8 5.4 1^6 2.3 2.0 9.5 15.1 20 1.6 17.5 21.0 18.3 4.6 4.6 5.3 1.6 2.2 2.0 8.5 9.3 21 1.6 17.8 19.4 18.8 3.8 4.5 5.0 1.6 2.2 2.5 7.3 8.0 22 1.6 18 18.0 19.5 3.3 3.8 4.5 1.6 2.2 3.5 5.0 6.3 23 1.6 19.0 17.3 19.9 3.0 4.5 3.8 1.6 2.9 4.0 5.0 5.2 24 1.6 20.4 15.1 20.1 2.7 5.5 3.6 1 .5 4.9 4.0 6.1 5.0 25 1.9 20.9 13.2 20.2 2.7 6.6 3.4 1.5 4.3 5.0 9.5 4.5 26 3.5 21.0 8.9 20.0 3.0 6.9 3.0 4.1 5.2 8.9 3.5 27 3.5 21.2 5.4 19.3 6.4 6.7 2.5 3.6 4.2 7.8 3.4 28 3.5 21.4 5.9 17.8 9.9 5.7 2.4 3.1 3.9 6.3 3.2 29 3.5 5.9 14.8 12.4 5.5 2.2 2.8 3.5 5.2 *3.1 30 3.3 4.9 12.4 10.9 5.0 2.1 2.5 3.0 4.0 *3.0 3. 3.0 4.5 8.9 2.5 2.8 *3.0 *Gase heiehts Jan. 2, 3, 6, 8 and 10 were obtained by interpolation. ♦Cage heights Dec. 29, 30 and .11 were read to top of ice. 189 Little Wabash Eiver. Daily Gage Height in Feet of Skillet Fork River near Mill Shoals, III. for 1908 to 1910. Day. Jan. Feb. Mar. Apr. Mav. June. 1 2 3 4 6 7 8 9 10 11 12 13 14 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30- 31. 3.1 3.3 3.4 3.4 4.1 5.0 6.5 7.0 6.9 6.8 5.0 4.2 11.4 13,5 14.9 15.4 16.3 16.5 16.9 17.3 17.3 16.9 15.7 15.3 11.3 8.6 7.7 7.0 6.8 6.6 6.2 19. S 21.2 22.3 22.9 23.3 23.4 22.9 22.7 22.2 21.6 21.0 20.4 19.6 17.5 14.8 10.7- 6.0 4.3 3.8 3.8 3.4 3.4 3.3 3.2 3.2 3.2 3.2 3.1 2.9 2.8 2.8 2.S 2.7 2.7 2 6 2.5 2.6 2.6 2.8 3.5 3.4 3.3 3.3 3.7 4.05 4.4 4.7 8.4 9.5 9.0 8.3 7.0 6.5 6.3 6.0 5.9 5.65 6.9 7.8 7.6 7.0 6.2 5.4 5.0 4.5 4.4 4.4 4.4 4.3 4.2 4.4 4.6 5.5 6.0 6.4 6.0 5.3 4.5 4.2 3.9 3.6 3.4 3.2 7.2 8.1 9.3 9.3 7.1 5.0 4.5 4.0 3.5 3.1 2.9 2.6 2.5 2.5 2.4 2.2 3.1 3.5 3.7 3.6 3.0 2.9 2.6 2.4 2.3 2.3 2.2 2.0 1.9 1.8 1.7 1.7 1.6 1.6 1.6 1.6 1.5 1.6 1.6 Gage heights Jan. 1-12 were affected by ice conditions. Appendix. 193 CLIMATOLOGICAL DATA. Sectiox 64 — Precipitation in Northern Illinois. Aledo, Mercer County^ III. — Elevation, 738 Feet. Year. Jan. Feb. Mar. Apr. May. ! June. 1 i 1 i 1 July. 1 Aug. Sept. Oct. Nov. Dec. Annual. 1900 0.35 0.91 1.96 0.66 1.75 1.29 1.67 0.54 0.72 1.22 1901 1.44 0.58 0.73 1.84 0.58 2.57 4.10 0.47 1.54 i.8S 0.82 1.53 0.37 1.52 2.28 0.26 2.58 1.40 2.72 2.57 1.86 2.78 2.06 2.42 2.87 1.85 2.39 1.28 3.39 3.60 1.95 3.72 2.40 2.27 2.20 2.60 1.93 5.36 6.26 3.33 3.24 4.37 5.13 6.88 4.56 2.28 7.81 3.84 2.03 4.52 4.91 2.66 4.93 3.81 2.16 8.79 1.89 4.49 2.46 1.18 6.74 3.98 3.96 0.44 6.89 6.53 7.58 2.14 3.20 5.60 5.73 3.51 2.36 5.11 6.35 3.62 1.70 5.63 2.02 1.92 3.59 0.87 3.51 5.09 0.62 2.33 1.57 0.62 1.40 2.00 1.06 2.10 0.98 0.15 2.05 3.12 1.40 2.63 1.69 48.89 39.32 30.51 27.61 35.32 34.21 35.29 32.27 1902 1903 1904 1905 1906 1907 1908 Means Year. Section 64 — Precipitation in Northern Illinois. Antioch, Lake County, III. — Elevation, 861 Feet. Jan. Feb, Mar. Apr, May. | June. I July. Aug. | Sept I I Oct. Nov. ! Dec. Annual. 1901. 1902- 1903. 1904. 1905. 1906. 1907. 1908. 0.45 0.35 0.55 1.00 3.20 3.80 2.56 Means 1.70 1.40 0.60 1.10 2.05 2.40 0.30 2.20 1.44 1.95 2.60 5.20 2.65 0.60 1.65 3.35 2.57 1.30 2.55 2.20 1.95 0.95 4.85 7.45 3.65 1.90 4.45 2.10 5.29 6.26 2.30 4.30 I 6.90 2.90 1.39 2.95 2.95 4.80 3.60 3.50 2.85 6.25 6.60 4.41 5.80 1.65 2.02 4.29 4.23 1.31 0.55 7.95 2.20 5.20 5.33 3.96 1.57 3.51 1.97 7.35 6.35 4.55 2.80 5.87 5.43 1.00 4.42 0.61 3.67 0.80 1.20 2.25 1.05 1.15 1.53 0.66 1.80 0.70 0.75 1.70 3.30 1.87 2.70 1.68 0.90 0.70 1.10 1.30 1.55 1.15 2.10 1.00 1.22 38.77 36.15 26.75 32.75 33.22 33.52 32.40 18 S W 194 Section 64 — Precipitatiox in Northern Illinois. Ashton, Lee County, III. — Elevation, Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 1895. 1896. 1897. 1898. 1899. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. 0.57 4.15 2.69 0.48 1.34 0.91 0.73 0.94 2.18 0.50 2.40 4.13 0.35 Means 1.64 1.62 1,51 2.14 1.66 2.47 1.16 1.36 1.32 2.09 2.34 2.72 0.61 3.35 1.87 0.65 1.33 4.21 4.78 2.21 2.42 3.12 1.76 3.14 4.03 3.46 3.32 2.12 3.43 0.42 3.71 3.19 2.48 1.21 1.45 0.46 1.61 4.62 3.10 3.95 1.81 1 95 2.32 2.30 3.15 5.74 1.58 3.45 6.04 5.80 2.68 6.72 2.91 2.92 5.39 6.59 5.10 8.35 4.74 3.72 3.55 3.07 3.00 1.18 1.43 2.02 10.41 l!32 2.73 7.45 4.90 2.55 3.50 3.74 4.71 0.99 1.60 2.98 4.60 4.14 7.26 6.29 4.35 2.02 2.38 6.98 3.72 3.98 3.56 2.04 0.46 8.61 1.29 9.34 0.44 2.51 4.95 4.51 4.25 2.82 5.31 3.37 3.82 1.22 6.49 1.03 3.61 1.51 3.. 51 2.13 4.09 6.98 3.98 0.70 4.72 0.78 3.13 0.77 0.87 0.32 2.85 1.99 2.80 0.73 4.18 3.40 0.93 2.52 2.28 2.33 2.32 2.21 1.97 0.63 2.00 1.33 2.38 0.62 0.02 1.69 2.79 2.99 0.37 1.30 1.17 1.94 0.40 0.99 1.69 1.80 2.71 1.17 2.00 1.01 1.90 2.05 1.72 0.63 1.47 33.32 24.01 38.35 23.12 37.56 20.11 44.60 38.66 32.14 30.72 41.28 31.81 32.93 195 Section 64 — Precipitation in Northern Ilunois. Aurora, Kane Couniy, III. — Elevation, 687 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 1857 4.40 3.91 .53 2.57 3.64 3.08 1.00 2.41 0.76 2.95 1858 2.19 1.82 1.34 1.22 1.62 2.40 2.38 6.00 0.66 5.19 2.90 2.28 6.83 2.69 4.57 O.07 2.88 3.13 6.69 2.02 6.10 3.84 2.52 1.67 5.01 3.06 3.01 47 50 1859 30 47 I860 1861 1.05 * * * * * * * * * * * 0.57 0.94 2.17 2.55 * 0.60 3.08 1.29 « 1865 1866 1.97 2.45 0.90 0.77 3.30 1.05 2.01 1.49 6.86 0.95 2.39 4.91 1.67 5.24 2.55 2.32 3.41 3.00 3.21 2.98 2.28 6.02 2.79 4.50 4.80 2.64 5.47 2.60 1.21 2.07 30 24 1867 31 26 1868 . 1869 3.63 1.37 2.21 0.70 1870 5.48 2.45 1.80 0.65 0.57 * 1.92 3.04 2.76 1.50 * 1.58 2.33 1.35 4.48 1.63 4.75 5.50 1.75 3.31 1.97 3.63 0.73 6.20 i" 0.76 3.22 3.24 1.39 1.57 2.42 4.04 5.60 4.. 33 1.89 3.82 1.90 0.66 2.36 2.70 7.07 1.17 6.92 0.85 4.25 2.23 1.99 2.34 7.29 7.45 5.05 2.36 8.31 6.08 0.95 3.56 4.63 3.41 0.90 2.. 50 * 2.40 2.14 7.15 3.21 6.34 4.61 3.74 1.80 3.54 3.10 1.11 4.63 0.68 1.28 3.20 1.68 1.11 0.22 0.21 4.66 2.13 2.83 1.27 2.02 2.69 1.53 2.32 2.2.T 1.43 0.67 2.67 1.61 2.58 1.18 1.30 * 4.17 1.03 4.97 2.10 5.55 1.90 2.04 1.26 2.21 3.27 2.87 1.79 4.21 1.63 2.99 1.93 5.41 3.83 3.89 2.60 1.05 3.23 1.21 2.93 0.54 0.06 2.21 2.64 1.62 2.02 2.42 34 36 1871 1872 0.35 5,34 * 1873. . 3.93 * 3.23 * 2.20 * 5.43 * 0.38 5.63 3.19 t3.89 4.44 6.38 2.59 0.36 2.34 3.20 5.08 0.78 2.35 4.48 1.19 0.62 3.83 5.60 4.45 1.07 4.82 3.55 4.79 7.43 6.59 3.81 2.72 2.12 5.51 4.50 3.63 3.61 * 1.56 7.46 0.73 4.70 0.95 2.48 7.72 2.97 3.79 5.66 *1.21 2.38 5.01 2.74 0.32 1.79 4.80 2.43 2.23 4.22 1.84 3.28 1.06 2.32 5.39 5.62 4.00 3.80 6.72 5.35 3.46 * * 1.70 0.76 3.27 2.47 2.61 4.59 3.05 1.18 4.25 2.61 2.53 0.78 1.66 2.26 2.60 0.96 5.89 0.16 1.32 1.66 1.61 0.41 1.40 1.71 1.74 1.69 1.35 2.48 1.07 0.97 1.97 * 1879 1880 4.08 1.17 1.14 2.63 1.24 2.31 3.63 4.36 1.40 2.06 3.24 2.35 1.53 1.36 2.96 1.53 0.91 6.02 4.26 0.65 1.68 1.39 0.47 0.83 2.12 0.93 3.10 3.69 0.81 2.24 3.55 8.06 2.95 7.27 3.74 2.09 1.76 5.86 1.56 1.32 1.18 2.28 1.18 2.25 1.95 0.50 1.91 1.73 3.21 1.75 3.72 1.73 2.05 1.94 1.47 1.33 2.52 0.26 3.86 2.30 2.25 3.88 2.83 0.61 2.30 0.38 3.00 1.06 3.19 1.47 2.64 2.57 2.28 2.69 3.17 1.14 1.75 3.58 5.09 2.92 2.23 4.11 3.14 3.94 5.02 2.33 2.12 3.17 3.58 2.75 4.36 1.68 5.98 3.75 2.66 3.31 4.24 0.82 2.08 2.63 2.17 3.94 3.59 4.65 2.49 1.48 3.75 3.04 1.30 0.49 0.78 0.39 2.16 4.23 4.21 3.85 1.57 2.00 3.10 2.82 6.10 2.61 5.04 7.23 2.26 3.16 5.39 3.02 5.16 3.82 4.25 2.14 8.29 2.10 2.76 3.34 6.12 1.06 4.43 7.34 4.17 0.71 6.18 3.11 2.51 5.94 3.10 4.90 7.19 4.11 3.91 5.80 t7.33 3.56 2.18 5.07 1.27 0.58 0.98 4.38 6.97 3.24 12.83 3.05 1.87 1.66 2.06 5.25 5.39 1.59 2.94 1.81 13.19 4.09 1.96 6.16 1.67 3.70 1.43 3.80 44 49 1881 45 75 1882 43 03 1883 46 51 1884 36 76 1885 39 50 1886 32 46 1887 36 16 1888 34 10 1889 32 30 1890 32 61 1891 31 09 1892 44 45 1893 29 10 1894 29 25 1895 31 86 1896 35 66 1897 33 63 1898 42 14 1899 1900 28.32 30 81 1901 22 21 1902 50 8'^ 1903 1904 41.54 35.05 1905 35 50 1906 1907 35.68 40 15 1908 Means 34.43 35.63 t Interpolated from surrounding stations. 196 Section 64 — Precipitation in Northern Illinois. Cambridge, Henry County, III. — Elevation, 82 Ji- Feet. Year. 1 Jan. 1 Feb. Mar. Apr. May. June. July. Aug. Sept. 1 Get. ! Nov. i Dec. Annual. 1 1873 0.70 1.50 1.00 3.70 4.70 3.50 4.00 3.10 3.90 5.00 1.65 1.80 2.80 3.70 3.90 4.20 1.90 3.10 2.50 3.50 4.00 0.60 1.90 4.40 3.20 5.10 2.10 7.00 0.50 1.80 3.20 4.20 3.01 7.20 3.10 3.70 *6.00 7.81 1.95 2.60 7.60 3.50 3.50 2.80 4.60 *1.50 1.50 2.60 3. 30 1.15 1.50 3.00 5.90 3.20 6.20 0.10 1.40 7.00 5.30 4.60 1.60 1.50 1.80 4.70 5.60 0.80 1.20 2.10 1.30 7.00 3.10 1.80 0.80 7.90 0.80 2.60 0.60 3.00 3.50 0.90 2.60 1.50 0.50 5.00 0.10 2.60 1.00 2.60 3.30 2.20 0.50 1.30 1874 4.70 1.20 3.60 2.20 0.30 1.00 3.30 3.00 1.50 1.00 5.00 2.30 "2m 2.00 0.80 5.00 2.40 29 60 1875 34 45 1876 1877 35.61 1878 35 70 1879 30.90 18S0 38 50 1881 39.60 1882 1883 1884 1885 i.26 2.36 2.97 1.20 0.70 1.24 2.15 0.84 3.17 1886 2.81 2.71 0.95 * 1.56 0.92 4.90 3.34 0.29 1.65 1.37 0.62 0.96 2.08 0.95 3.11 3.69 0.70 2.05 1.98 4.77 3.17 0.70 2.17 0.86 3.98 1.80 9.54 1.39 0.40 1.95 0^83 5.74 2.99 2.95 22 83 1887 1888 . . . 30.25 * * 0.30 1.10 1.52 1.77 1.63 3.04 1.90 1.36 1.85 1.00 2.40 2.13 0.60 3.11 2.12 * 1.60 1.24 4.03 6.15 2.81 3.40 3.11 2.90 2.34 3.65 1.60 3.65 2.15 2.55 2.93 * 1.23 4.55 3.70 2.89 2.21 1.74 1.37 2.48 4.97 1.84 3.83 2.07 2.04 * 2.42 4.33 1.48 9.30 6.15 4.41 2.06 4.38 7.03 3.40 3.35 2.16 4.15 * 1.40 2.89 1.44 9.88 2.86 0.93 2.61 7.89 2.85 1.58 5.21 6.69 2.. 55 7.40 6.20 2.41 1.17 2.91 2.70 3.90 11 .55 2.95 10.39 2.11 1.87 6.47 4.34 3.93 * 2.78 3.54 1.16 6.57 1.78 8.19 1.38 4.64 3.96 5.60 4.03 1.91 6.60 3.69 3.. 57 * 2.99 5.45 2.27 2.72 2.22 3.24 2.17 5.99 6.27 5.83 1.87 4.26 4.05 1.13 3.46 0.75 1.46 0.33 4.06 3.89 2.72 0.88 4.19 2.32 0.27 1.98 1.47 0.58 1.12 2.25 2.74 1.21 1.89 1.91 1,22 2.16 1.60 2.11 1.09 0.21 2.27 3.53 1.23 3.29 1.75 * 3.65 0.63 1.61 0.60 2.44 0.06 1.16 2.05 1.36 2.14 1.25 1.88 0.80 0.61 1.73 * 1895 28.81 1896 33.62 1S97 26.74 1898 - .. 50.36 1899 30.41 1900 34.23 1901 23.41 1902 50.16 1903 37.95 1904 37.99 1905 30.85 1906 33.73 1907 34.91 1908 Means 2.68 3.72 3.74 33.93 * Estimated. All values prior to 1895 are for Geneseo, 10 miles distant, 197 Section 64: — Precipitatiox ix Xortiierx Illixois. Chicago, Cook County, III. — Elevation, S24 Feet. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 1 1.45 2.66 3.70 3.90 5.56 2.52 2.01 0.74 1.88 3.62 3.44 0.84 3.79 3.03 3.24 3.46 3.09 2.59 6.43 0.65 1.06 0.22 0.47 0.89 6.22 7.20 1.44 4.04 1.58 3.53 2.43 1.61 4.44 1.51 2.15 2.67 2.08 3.25 0.58 3.15 3.76 2. 55 2.83 0.63 1.99 1.43 2.32 3.64 5.17 7.18 3.29 4.39 4.32 0.75 2 62 3.90 4.04 2.07 1.85 5.96 3.11 3.66 3.74 1.20 3 25 0.48 0.06 5.37 2.42 1.81 6.04 2.98 3.06 2.02 6.51 6.08 2.75 2.12 4.39 5.57 5.22 3.02 6.09 3.66 1.99 5.17 0.83 2.58 1.47 2.37 1.93 3.89 3.18 5.58 0.45 1.18 2.72 4.93 2.47 2.91 2.25 5.20 4.97 3.50 3.07 4.47 2.25 3.19 0.87 1.11 5.9S 2.99 1.81 1.85 5.93 4.31 0.54 4.34 6.89 5.97 2.67 2.24 3.43 6.72 5.52 5.71 3.43 4.96 0.91 3.40 1.48 1.99 4.74 0.42 3.72 7.32 5.61 5.53 1.21 1.36 7.36 5.26 1..59 3.27 5.16 3.05 1.53 2.11 3.71 2.50 2.29 3.59 1,80 4.21 2.01 0.57 4.00 3.17 5.20 2.44 11.28 2.97 3.87 2.33 3.35 1.51 1.79 1.29 1.00 0.94 1.53 3.38 6.93 1.42 1.66 1.76 5.10 0.89 0.46 1.38 1.63 1.05 3.35 4.03 2.03 2.41 3.67 1.51 2.99 2.13 6.22 1.66 3.93 2.10 0,98 2 95 2.89 1.94 1.31 1.43 2.35 5.38 2.93 9.56 0.39 2,75 1.82 3.49 1.90 2.42 2.10 3.23 5.13 3.25 2.57 2.58 1,39 4.20 1..59 1.25 1.95 2.13 3.14 2.09 2.42 2.47 4.52 0,32 0.36 3.83 1 32 1.57 2.21 2.17 6.77 10.58 2.23 1.85 1,34 1.54 2.68 1.63 2.44 1.69 4.16 4.93 3.59 3.08 0.18 1.98 1.75 2 45 2.14 2.13 2.66 2.65 3.35 1.96 0.60 0.60 8.28 0.84 1.18 1.66 1.60 1.32 0.86 1.99 1.79 2.42 6.49 0.89 0.51 5.60 6.76 3.48 1.26 2.79 4.16 2.82 3.61 3.52 6.70 1.36 2.16 0.16 2.22 3.56 2.23 0.84 3.60 1.47 1.70 0.84 0.18 3.06 1.62 2.59 4.60 0.76 2.23 5.30 1.94 3.03 3.16 3.26 2,25 111 1.60 2.11 0.14 4.35 2.71 6.66 0.91 2.39 2.09 1.14 1.81 3.52 1.58 1.02 3.59 2.06 4.64 4.24 1.56 1,35 3,30 0.58 2.05 3.38 0.33 2.18 2.42 4.25 2,00 2.92 1,29 0.85 1.70 1.53 4.16 2.26 5.08 6.45 5.78 1.44 4.83 1,45 2.03 1.90 3.03 1.67 3.77 0.93 1.62 4.78 3.49 4.00 1.09 0.34 2.28 1.71 4.57 3.01 1.54 0.55 2.76 4.00 2,65 1.58 0.31 1.21 1.95 2.43 3.03 5.14 3.27 5.02 4.46 4.18 1.82 2.05 0.68 2.37 1.61 1.86 2.09 1.87 4.84 1.43 5.54 2.05 3.08 2.46 1.00 2.94 2.37 3.50 3.64 3.15 4.22 4.49 0.93 1.92 2.73 3.72 3.48 2.81 6.74 1.48 1.45 6.35 2.09 0.81 2.67 1.18 2.30 2.59 2.72 3.63 3,52 3.62 3.02 3.06 2.43 2.52 2,05 Annual. 1871. 1872. 1873. 1874. 1875. 1876. 1877. 1878. 1879. 1880. 1881. 1882. 1883. 1884. 1885. 1886. 1887. 1888. 1889. 1890. 1891. 1892. 1893. 1894. 1895. 1896. 1897. 1898. 1899. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. 4.13 0.68 2.56 3.47 0.96 3.22 1.91 1.31 0.54 3.53 0.87 1.55 1.74 1.39 3.18 3.56 3.13 1.56 1.64 , 2.98 I 1.99 1.99 2.08 1.55 2.15 1.12 4.53 3.54 0.58 1.21 1.15 0.66 1.09 2.25 1.33 1.67 4.21 2.05 Means . 35.61 29.07 36.41 28.63 38.06 36.48 41.01 41.95 30.71 37.32 44.18 41.34 45.86 34.61 44.37 26.77 29.13 30.86 34.95 32.69 26.54 36.56 27.47 27.46 32.38 33.14 25.85 33.77 26.49 28.65 24.52 37.57 28.09 26.14 35.36 30.87 35.10 34.83 33.54 198 Section 64 — Precipitation in Northern Illinois. Da'Venport, Scott County, Iowa — Elevation, 606 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. I Aug. Sept Oct. Nov, Dee. Annual. 1871. 1872. 1873. 1874. 1875. 1876. 1877. 1878. 1879. 1880. 1881. 1882. 1883. 1884. 1885. 1887. 1888. 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908.... Means . 0.13 3. 56 4,34 0,38 3,47 1.41 0.36 0.79 3.13 1.34 0.90 1.16 0.75 2.10 2.22 1.43 1.54 0,95 2.49 2.38 1.60 1.14 1.33 1.27 0.89 3.58 3.68 0.31 1.27 1.10 0.60 0.79 2.20 0.63 2.14 3.55 0.69 1.66 0.10 0.77 0.74 1.09 3.63 0.07 1.09 1.09 1.72 4.14 0.62 4.42 0.98 1.20 1.52 4.87 1.17 1.44 1.10 0.89 1.38 1.69 1.48 0.38 1.45 1.57 1.86 1.91 2.45 1.59 0.96 1.67 0.72 1.99 2.21 0.22 2.37 1.58 1.82 1.43 1.34 0.88 4.35 3.91 2.21 1.80 2.68 3,33 2.90 0.73 3.27 0.17 3.08 0.77 2.70 1.74 2.34 1.68 3.06 2.25 1.88 1.57 0.84 2.82 4.85 1.94 2.92 2.57 1.76 2.06 2.70 2.21 2.20 1.79 2.24 2.24 5.06 3.96 2.64 2.30 5.39 3.28 2.89 1.54 4.50 1.11 3.15 3.33 0.77 2.47 1.84 1.17 1.57 3.89 0.86 3.30 5.41 4.50 1.37 0.32 3.41 3.69 3.01 2.94 2.10 0.88 1.40 3.42 2.05 3.45 1.92 1.90 2.22 4.46 6.37 3.45 2.01 6.70 2.82 5.14 5.83 5.09 1.34 5.49 5.46 3.79 1.94 3.73 1.76 9.23 6.34 4.33 2.74 8.84 2.67 1.93 2.28 4.03 1.91 6.73 7.35 4.68 1.37 4.57 5.52 2.64 3.12 2.60 4.33 5.13 3.68 3.78 2.16 5.37 4.91 4.25 5.80 4.36 4.57 7.21 7.94 8.43 4.38 3.07 2.08 0.49 1.66 3.86 5.59 4.51 3.56 10.79 3.82 2.16 1.22 2.28 1.37 3.53 4.02 1.01 3.02 7.55 2.28 1.44 7.68 2.69 2.07 4.57 2.30 3.80 2.37 3.10 9.36 4.82 3.42 2.19 5.87 4.31 0.91 4.41 3.66 4.51 1.66 0.43 3.09 7.31 8.25 0.85 3.29 4.16 1.75 0.44 5.16 5.68 3.21 1.85 2.84 3.49 1.48 6.38 4.47 3.34 0.99 2.26 7.13 3.30 4.85 8.91 0.51 3,68 1.73 4.27 3.21 5.07 4.33 5.90 0.83 2.29 1.02 3.84 12.68 2.67 3.23 2.79 1.11 1.66 5.54 1.53 1.12 2.02 4.79 3.12 0.68 4.96 4.47 4.90 0.46 7.25 4.68 3.60 1.93 3.50 6.48 6.23 0.30 5.30 1.00 7.86 4.05 5.50 1.45 1.82 1.43 4.87 5.59 1.39 0.73 4.79 4.19 2.43 5.45 1.38 3.27 2.34 1 .50 2.09 3,36 3,02 4,30 3.98 1.52 3.14 0.82 3.66 2.29 3.20 7.09 3.98 3.48 2.47 3.55 1.12 3.19 0.61 1.48 1.30 1.63 1.54 4.88 4.21 0,92 0.94 6.85 5.13 7.17 2.71 3.47 3.41 2.81 1.26 3.63 1.37 0.55 0,80 1.02 0.81 1.67 0.35 3.38 1.46 2.00 0.45 2.81 2.27 1.15 2.73 1.67 0.70 0.87 3.33 1.86 0.63 2.47 0.57 2.54 2.53 0.90 4.70 1.23 2.19 1.49 3.58 1.49 1.20 0.74 1.13 3.54 2.17 1.37 3.56 2.01 2.56 1.26 2.60 0.68 1.68 1.37 0.90 1.48 0.79 1.95 0.70 0.18 2.01 2.66 1.08 2.46 1.61 0.61 3.84 0.50 3.08 0.36 2.32 0.97 1.02 1.15 1.71 1.78 0.99 3.68 1.95 0.53 3.26 2.59 1.60 0.62 1.64 2.73 1.67 0.61 2.54 0.65 1.53 0.59 2.68 0.21 1.33 1.88 0.78 2.21 1.32 1.61 0.49 0.40 4.26 4.03 3.63 3.73 3.15 2.29 1.83 1.55 36.44 28.08 36.79 31.99 46.82 35.10 31.21 33.89 42.73 37.28 36.60 34.59 38.11 34.35 23.15 31.23 40.49 37.61 26.10 31.45 44.15 27.33 18.52 27.14 28.68 23.91 38.95 31.64 30.17 17.33 40.31 35.73 26.21 31.54 27.93 33.29 31.60 32.63 190 Section 64 — Precipitatiox in Northern Illinois. Dixon, Leo County, III. — Elevation, 725 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov Dec. Annual. J1886 tl887 tl888 * 1892!!!!!!!! 1893 1894 1895 1896 1897 1898 1899 1900 1901 ....... . 1902 1903 1904 1905 1906 1907 1908 Means 4.29 4.21 2.55 2.22 2.07 2.15 1.22 0.65 3.00 3.27 0.30 2.06 1.09 0.43 2.76 2.23 0.32 2.07 3.43 0.72 2.05 2.79 4.89 1.40 1.69 1.94 1.97 0.43 0.74 1.25 2.26 1.25 1.86 0.54 1.05 0.90 0.79 1.24 2.46 0.22 2.82 1.62 3.68 1.66 1.89 2.24 2.83 3.12 0.83 0.81 4.25 4.74 1.67 2.86 2.98 1.81 3.07 3.07 3.35 2.70 2.08 3.38 2.65 3.60 1.10 1.77 * 3.27 4.02 2.04 1.17 3.62 3.43 3.29 1.56 1.32 0.34 1.69 4.20 2.29 3.66 2.70 2.11 3.29 2.52 6.32 2.51 7.08 * 8.93 2.99 4 28 4.46 5.87 0.96 4.00 6.76 5.25 2.28 8.00 4.35 3.26 6.15 7.24 4.89 5.16 5.04 '2!63' 0.32 2.35 1.33 3.92 2.94 3.62 "3!76' 1.41 1.46 1.32 9.02 40.53 7.61 4.42 1.91 1.62 3.18 5.27 2.49 1.91 1.32 2.48 9.75 1.46 2.27 3.35 6.33 3.19 2.24 3.49 3. 84 3.74 0.15 4.59 4.81 1.97 1.55 2.82 4.36 8.98 8.47 4.91 7.58 1.97 5.12 8.76 4.18 4.24 1.94 0.39 to. 92 2.83 3.75 0.56 6.39 1.83 6.18 0.53 2.62 5.64 3.45 4.15 2.09 5.33 5.68 3.13 2.56 3.22 3.20 1.81 4.66 2.00 3.01 1.48 4.39 2.36 4.63 6.13 5.46 1.23 4.70 4.95 .0.84 3.33 1.07 1.05 0.99 0.82 0.89 0.48 2.56 3.48 3.41 0.90 3.90 3.21 0.86 3.15 1.84 1.71 0.90 1.94 * 1.67 2.13 1.42 2.50 1.70 1.90 1.19 0.56 2.10 1.00 2.37 0.73 0.03 1.83 2.19 1.23 2.45 1.57 * 2.52 1.69 0.63 2.00 0.44 1.17 0.78 1.81 0.34 1.13 2.13 1.16 2.17 1.12 1.52 0.59 0.84 1.70 * 39.56 30.49 22.68 24.28 31,12 26.24 35.53 25.43 35.45 24.61 46.85 38.52 33.46 31.62 40.96 38.49 32.50 33.28 t Estimated. t Values prior to 1892 from Prairieville, 7 miles distant. 200 Section 64 — Precipitatiox in Xortherx Illinois. Dubuque, Dubuque Comity, Iowa — Elevation, 639 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept Oct. Nov. Dec. Annual. 1873. 1874. 1875. 1876. 1877. 1878. 1879. 1880. 1881- 1882. 1883. 1884. 1885. 1886. 1887. 1890. 1891. 1892. 1893. 1894. 1895. 1896. 1897. 1900... 1901... 1902... 1903.:. 1904... 1906... 1906... 1907... 1908... Means . 2.45 1.00 3.20 0.96 0.49 0.44 1.95 1.87 0.84 1.59 0.99 1.80 3.17 3.33 1.20 1.56 2.31 1.27 2.34 1.60 1.11 1.44 0.75 2.55 2.19 0.51 1.15 1.07 0.74 0.17 0.51 0.95 2.72 1.72 0.70 1.50 0.49 2.12 1.53 0.26 1.93 1.00 1.01 3.75 0.59 2.60 2.19 0.72 1.36 3.56 1.31 1.34 1.26 0.98 1.02 1.30 1.22 0.66 1.93 1.43 2.01 0.67 2.13 1.07 1.43 1.19 0.73 1.58 0.93 0.52 1.87 1.42 1.28 1.45 4.00 4.53 2.44 1.20 2.55 3.78 1.49 0.32 3.85 0.41 4.32 1.80 3.44 0.30 1.68 2.69 1.91 2.52 3.06 0.99 0.76 2.97 2.78 1.52 1.84 2.88 1.76 1.84 2.86 2.27 2.36 0.99 1.72 2.19 1.54 2.71 3.63 3.74 4.34 2.02 3.51 1.30 4.47 .12 .37 .58 3.56 2.94 1.63 4.37 4.32 2.27 0.49 7.80 3.39 4.06 4.24 2.39 1.01 1.11 3.29 2.05 3.07 1.16 2.48 2.50 2.8.5 1.08 3.62 5.96 3.84 4.61 2.94 3.72 2.20 4.16 7.13 4.88 2.62 4.17 2.53 5.84 4.00 5.36 2.54 9.18 3.06 1.75 2.63 7.63 2.09 4.47 5.75 4.75 3.10 8.67 4.25 3.86 4.06 3.59 2.66 5.82 3.29 4.75 7.88 6.75 4.35 4.99 6.02 7.56 6.29 5.34 4.89 6.16 0.71 1.32 5.28 3.87 9.59 2.34 14.16 5.49 2.25 1.05 3.11 2.36 4.36 4.08 2.04 1.23 6.97 2.16 0.74 4.33 3.36 4.08 2.21 1.27 3.24 5.74 8.15 2.90 6.71 6.78 3.55 10.53 1.48 7.90 5.30 6.35 0.89 2.44 3.59 4.22 1.21 4.59 6.08 3.57 0.02 3.00 7.72 4.34 2.83 4.12 8.00 2.31 6.80 7.10 1.86 1.51 1.57 5.15 2.06 5.88 2.13 1.07 5.92 3.96 1.72 2.43 7.15 2.46 2.29 2.70 4.25 8.02 0.67 4:40 1.73 0.26 6.00 3.31 2.51 0.68 1.32 1.75 2.05 1.51 4.37 1.95 3.35 0.25 1.57 5.27 2.68 3.07 4.44 5.85 2.92 1.53 7.68 7.10 5.90 0.67 6.94 2.98 6.84 10.26 2.60 2.09 4.07 4.58 3.10 7.62 2.01 1.54 3.72 0.68 3.79 3.31 2.96 2.06 5.67 3.19 3.07 0.99 3.34 3.72 3.93 3.20 2.21 1.26 1.78 6.01 1.14 4.24 4.44 4.27 3.10 3.71 2.07 2.18 2.71 1.10 5.35 2.85 0.93 0.66 6.70 5.29 4.44 4.16 2.32 4.08 2.22 1.62 0.66 6.43 2.20 0.44 1.66 1.51 0.80 2.56 1.02 3.86 1.63 2.38 1.64 2.26 1.72 3.18 3.88 1.70 0.77 1.20 2,50 0.77 4.79 0.48 2.49 3.31 0.80 5.41 2.11 3.19 1.55 1.65 1.43 0.64 1.89 0.74 2.75 1.67 1.86 3.24 1.89 2.03 1.53 2.12 1.60 1.23 1.15 0.97 1.64 0.67 0.86 0.75 0.08 2.64 2.96 1.29 1.34 1.82 2 07 0.65 30.80 2.71 35.46 0.52 50.28 2.70 38.97 1.12 38.30 1.28 32.40 1.25 40.32 1.65 55.15 1.79 32.84 1.88 39.57 4.08 42.86 3.14 40.45 1.03 27.51 3.07 34.40 1.96 33.31 1.38 24.25 0.82 43.16 2,08 27.55 2.08 48.77 1 .33 30.77 0.35 19.36 2.75 19.74 0.71 42 29 2.08 28.16 0.33 35.48 1.85 28.28 0.42 33.43 1.44 20.39 2.24 38.34 0.8.> 31.79 2.37 23.03 1.17 29.78 2.04 28.60 0.67 32.19 0.63 24.11 1.62 33.66 201 Section 64 — Precipitatiox in Northern Illinois. Galva, llenrij Comity, ill. — Elevation, 8Ji2 Feci. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 1864 2.31 7.50 8.25 0.82 2.61 1.94 2.25 2.00 0.87 0.20 0.35 2.37 0.19 0.35 1.99 3.20 2 93 1865 3.00 3.06 0.75 3.99 1.17 2.95 1.05 1.75 0.83 2.86 2.31 1.93 1.95 5.73 1.64 4.44 2.06 2.27 3.15 2.07 2.56 1.63 6.41 7.04 5.80 2.87 2.69 1.62 2.10 12.43 0.38 4.31 4.56 1.77 1.25 3.73 0.66 5.25 3.62 2.82 3.38 7.01 3.15 0.40 3.22 1.25 1.35 38 03 1866 . . - - 34 42 1867 24 27 1868 34 83 1869 1870 1871 1872 3.13 3.12 1.42 6.66 4.26 3.36 2.16 3.49 2.31 3.94 3.94 4.19 * 1.08 0.99 5.58 9.45 3.60 0.96 2.82 3.69 4.59 10.54 5.77 8.83 2.16 2.10 5.23 2.68 3.77 5.60 1.15 2.53 0.70 0.58 1.89 6.34 3.17 2.52 0.62 6.56 6.03 2.18 3.96 2.16 5.10 1.05 1.02 2.06 1.74 4.16 0.92 0.70 1.76 1.40 1.24 1.15 1.08 1.93 63 2.20 1873 2.15 2.60 0.14 1.69 0.25 1.16 0.46 2.14 0.43 1.71 1.08 3.56 2.18 2.40 1.31 3.18 3.41 2.93 0.51 * 2.88 2.53 0.35 0.79 4.64 5.43 2.70 2.95 2.70 4.17 2.72 3.66 2.34 2.24 1.27 4.65 2.57 5.53 4.02 2.62 2.62 3.15 4.87 2.16 3.54 1.53 2.93 4.14 * 5.73 1.71 1.03 4.24 2.61 2.77 1.44 1.35 0.95 2.07 4.07 2.60 4.78 1.92 3.16 3.50 2.97 5.11 2.18 4.22 5.26 2.71 4.43 0.87 5.23 1.84 4.96 4.31 * 2.45 2.18 2.53 5.25 1.06 8.74 6.07 4.28 1.51 5.01 5.42 3.05 3.96 2.33 2.83 9.32 4.08 1.60 3.40 4.72 4.67 8.87 3.18 3.66 3.26 8.36 6.23 3.54 * 1.37 4.14 1.57 3.10 0.92 9.86 2.57 0.51 3.70 8.96 3.64 2.49 5.16 3.49 2.44 3.84 3.98 1874 0.64 1.96 0.58 2.56 2.20 1.11 1.24 1.63 1.71 26 95 1875 26 o9 1876 2.05 I 1.91 4 93 I 3 20 34 44 1877 1878 0.24 0.81 3.28 0.92 1.51 1.87 * 0.95 1.64 1.33 1.17 4.91 3.38 0.24 1.71 1.13 0.44 0.74 2.18 0.67 3.01 3.24 1.83 1.80 1.30 0.75 2.30 3.89 1.06 2.75 * 1.65 0.88 0.19 0.80 1.23 1.43 1.39 2.49 1.77 1.29 1.95 0.89 1.64 2.19 0.20 3.01 1.56 3.20 2.54 1.73 5.93 3.19 0.60 2.81 1.83 2.77 1.56 31 67 1879 24 74 1880 32 16 1881 39 00 1882 37 50 1883 * 0.69 1.78 2.74 3.69 1.01 7.13 2.40 8.21 1.38 3.78 4.91 5.97 2.58 2.50 6.41 3.91 3.52 . * 3.57 5.17 5.17 6.68 2.46 3.84 2.46 4.65 2.84 6.04 5.30 5.49 1.47 4.02 2.69 1.57 3.50 * 0.46 1.16 0.87 1.30 0.23 2.73 4.34 2.61 1.17 3 28 1.88 0.24 2.85 0.69 0.65 1.42 1.88 * 2.25 1.62 2.18 1.42 2.00 2.19 1.23 1.63 1.08 1.82 1.08 0.23 1.87 2.09 1.43 3.64 1.73 * 1.54 0.62 4.20 0.30 1.08 0.61 1.71 0.16 1.09 1.64 0.92 1.96 1.56 1.78 1.11 0.48 1.47 * 1893 24 62 1894 24 42 1895 27.74 1896 38 19 1897 25 75 1898 49 07 1899 29 37 1900 34 24 1901 23 91 1902 49 04 1903 38 40 1904 37 59 1905 1906 31.04 28 36 1907 30 66 1908 39 85 Means 32.83 Values 1864 to 1883, inclusive, for Elmira, 12 miles distant. 202 Section 64 — Precipitation in Northeex Illinois. Henry, Marshall County, III. — Elevation, 500 Feet. Year. Jan. Feb. Mar. Apr. May. June. •luly. Aug. Sept. Oct. Nov. Dee. Annual. 1S71 ... . 2.59 2.49 0.40 0.80 1..58 1.90 2.60 'iiso" 3.20 0.55 0.90 1.20 1.35 2.90 2.60 2.30 1.60 4.10 4.50 2.50 2.30 4.00 3.70 5.40 1.80 3.50 4.50 3.20 3.70 3.40 2.40 6.10 4.70 5.30 0.90 3.30 3.50 5.60 5.90 3.10 1.80 3.30 2.20 1.50 8.30 6.10 3.10 1.10 3.70 6.30 2.00 1.40 2.10 1.20 1.00 5.60 0.50 5.30 2.50 3.20 5.10 2.50 0.90 0.90 2.20 1.50 1.80 1.90 1.90 1.20 6.10 2.90 2.90 1.20 1.40 3.20 0.67 3.60 4.00 0.40 1.90 0.70 4.65 0.50 2.70 0.76 2.90 1.80 29 38 1872 1873 - . 2.52 3.40 0.40 3.40 0.60 0.50 0.60 * 2.24 1.07 1.65 2.05 2.36 1.20 1.70 28 67 1874 26 88 1875 . . 33 92 1876 37 26 1877 1878 31 90 1879 * 4.55 1.57 0.85 2.03 1.3.b 0.60 0.90 * 0.72 2.54 1.60 2.55 3.13 2.63 * 0.73 0.93 2.60 3.39 3.50 3.33 5.10 * 1.52 6.87 4.12 4.54 2.68 12.57 1.60 3.20 1.53 7.06 0.95 6.41 5.64 4.76 2.20 4.14 3.8.', 3.85 3.60 2.53 3.65 8.90 4.19 * 1.70 2.29 5.72 3.98 6.79 10.01 2.95 4.91 1.39 2.81 7.35 3.61 3.00 2.62 2.83 11.21 2.67 3.22 5.46 3.31 3.79 4.60 4 28 * 1.30 2.14 -4.97 0.66 1.99 4.22 1.26 0.25 9.66 9.65 2.92 1.10 4.57 2.76 3.40 11.01 3.28 5.73 2.61 2.57 5.43 2.82 3,72 * 4.80 1.25 0.75 1.45 4.45 0.32 0.38 1.82 2.42 2.13 0.71 7.10 1.63 6.79 1.90 5.44 5.50 4.51 4.20 3.91 4.58 0.94 3.01 * 2.70 1.21 3.83 3.07 0.98 1.25 1.91 7.06 1.46 6.95 0.95 6.91 3.12 3.64 2.56 6.10 6.68 3.66 1.86 5.03 4.51 0.80 3.24 * 2.96 2.71 2.02 5.57 1.43 0.70 0.95 1.29 1.24 0.08 0.18 3.11 3.45 3.94 0.83 1.60 1.35 0.31 2.91 1.92 .0.80 0.77 1.99 * 1.48 3.10 1.86 1.45 4.66 2.65 3.53 2.22 1.45 0.20 2.28 2.30 * 1887 28 23 1888 27 90 1889 31 42 1890 30 94 1891 35.60 1892 41 78 1893 1894 2.75 4.33 2.46 1.97 2.25 1.50 3.38 1.69 T 2.21 2.56 1.92 1.87 2.35 i.ii 5.16 0.12 1.03 1.32 2.48 0.14 1.76 1.88 1.86 1.71 1.63 2.17 1.23 0.81 1.80 189.5 1.00 0.92 5.47 4.00 0.33 1.82 1.45 0.46 1.20 2.84 1.09 2.23 6.85 1.12 1.94 0.20 0.97 1.65 *2.10 1.94 3.67 1.23 1.60 2.. 59 1.43 1.76 1.70 0.16 2.51 1.68 0.86 0.93 3.79 *6.15 2.26 3.15 3.97 a. 60 3.84 4.28 2.64 2.31 3.20 3.00 2.58 1.56 4.45 2.36 3.68 1.06 1.68 0.96 2.63 5.22 3.51 3.87 1.65 2.79 4.64 3.03 30 79 1896 38 81 1897 1898 31.69 47 95 1899 31.45 1900 37 12 1901 24.59 1902 63 05 1903 39.73 1904 35 05 1905 33 74 1906 31 89 1907 37.91 1908 32 78 Means . 33.81 Values from 1871 to 1893 inclusive, for Hennepin, 10 miles distant. Values from May 1894 to January 1898, inclusive, for Clear Creek less than 17 miles distant' * Estimated. 203 Section 64 — Precipitation in Xortiiern Illinois. Joliet, Will County, III. — Elevation, 5Jfl Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 1887 0.97 8.50 2.07 1.70 * 2.47 0.70 * 2.72 6.00 * 2.96 0.90 2.95 3.30 * 1.85 3.17 1888 0.90 * 1.00 * 2.35 * 2.10 * * 1.87 1.68 2.90 2.96 4.42 2.61 1.15 3,10 1.63 2.99 0.86 0.10 2.66 2.63 1.86 2.77 2.24 * 1,57 1.00 6.62 0.36 1.68 2.15 1.70 0.53 2.36 1.68 2.18 1.63 1.46 3.13 3.07 1.30 2.09 * 1893 1894 . -. - 1.16 1.82 1.14 6.67 4.05 0.82 1.58 1.88 0.55 1.05 2.42 1.18 2.23 5 70 0.77 2.12 1.31 0.67 2.07 1.84 2.28 1.68 4.29 1.62 1.43 2.92 1.75 1.43 2.30 0.32 2.66 1.85 2.87 1.04 1.15 3.80 6.12 2.23 2.24 3.62 5.51 2.22 4.97 2.29 1.61 3.00 4.33 3.08 2.23 1.92 2.82 2.87 1.42 0.35 0.79 0.56 2.36 3.62 3.81 4.13 1.67 2.28 3.32 2.27 .... 3.69 1.95 5.28 1.25 3.82 4.69 4.27 0.81 7.48 2.49 3.19 5.42 2.00 3.32 6.95 3.89 2.84 1.26 3.89 5 19 7.89 2.17 1.80 3.14 12.86 1.68 0.94 5.10 1.85 1.70 1.30 3.38 0.46 4.32 4.97 1.59 1.59 5.26 5.08 5.42 9.38 4.46 2.97 4.18 2.51 5.38 3.79 3.79 0.85 2.96 2.75 0.55 4.69 1.74 5.74 2.84 3.15 4.77 3.19 4.29 4.00 4.66 3.80 3.45 5.99 0.93 6.69 0.63 3.20 2.44 2.05 2.55 6.28 4.98 4.95 3.63 5.68 6,13 1.32 3 -.61 1.18 0.67 0.86 0.44 4.53 2.39 1.61 0.85 2.44 1.40 1.44 3.57 2.76 0.66 0.82 1.87 25 26 1895 1896 27.06 34 94 1897 30 93 1898 44 35 1899 26 62 1900 33 OS 1901 27 28 1902 1903 1904 56.11 32.63 31 36 1905 39 34 1906 ... . 38 37 1907 38 08 1908 33 13 Means 33.64 From November 1893 to April 1895, inclusive, the values are for Braidwood, 19 miles distant. 204 Section 64 — Precipitatiox ix Xoetherx Illinois. Kishwaukee, Winnebago County, III. — Elevation, 730 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Deo. Annual. 0.76 2.25 0.57 2.. 57 0.41 2.00 1.48 1.18 0.60 2.99 2.49 1.58 6.51 3.57 1.65 5.01 2.58 2.88 1.60 1.30 2.96 1.71 *0.33 2.59 0.90 1.62 0.84 2.23 0.48 1.53 1.87- 1.04 1.93 1.45 1.74 1.23 0.56 1.90 1873 1.80 4.87 0.75 3.46 3.06 0.56 0.71 3.17 1.71 1.19 1.98 1.42 2.39 5.88 4.21 1.72 2.96 2.81 2.72 3.72 3.39 1.47 2.27 0.90 4.72 2.97 0.43 '6!83' 1.56 2.91 0.30 1.52 1.32 1.92 6.50 2.01 3.76 1.91 2.50 3.40 6.44 1.30 1.51 2.69 1.65 1.95 2.45 2.06 0.93 2.40 1.45 2.52 0.95 3.39 2.40 1.63 1.19 1.30 1.42 1.64 0.29 2.09 2.12 1.56 1.01 0.59 2.84 5.53 3.63 0.91 2.70 3.49 3.54 0.57 2.88 0.26 4.55 1.25 3.03 1.32 2.42 3.21 1.61 3.21 3.26 2.. 53 2.02 4.90 4.21 1.74 1.07 3.93 3.17 3.84 4.43 3.80 2.88 2.15 4.17 2.73 1.50 1.23 3.06 3.83 3.99 3.44 2.76 4.53 1..38 5.15 1.96 3.45 4.33 4.36 0.92 2.54 2.88 3.76 4.83 4.71 5.38 *2.74 1.51 4.08 3.81 2.16 4.75 1.09 2.25 6.06 2.20 4.20 2.19 4,11 2.39 3.42 6.39 3.43 2.39 4.93 1.98 6.25 6.64 5.28 2.75 9.18 3.09 *3.51 3.54 6.31 1.12 4.36 3.00 3.39 6.21 4.25 4.32 3.48 3.63 3.88 6.44 5.69 4.21 6.16 5.47 2.74 0.89 1.27 3.93 12.33 4.87 14.16 4.51 *2.03 1.93 2.34 4.09 2.79 1.60 0.90 5.96 5.^0 1.96 5.75 6.98 1.74 7.72 2.96 3.69 6.13 4.50 0.35 3.12 4.90 2.02 0.83 2.27 4.32 3.49 *1.48 2.53 4.36 2.71 2.32 1.65 1.19 2.15 2.42 4.04 1.99 3.06 2.98 0.33 3.82 1.50 3.68 9.18 8.41 4.42 1.99 0.74 3.38 1.44 7.26 1.13 *1.27 3.06 3.75 0.90 5.46 1.55 5.97 3.o6 4.71 0.61 0.78 0.40 3.51 3.72 0.93 0.92 3.85 4.64 2.25 3.75 1.05 1.95 0.60 0.75 1.61 2.82 *5.15 2.77 8.33 1.18 3.49 2.70 1.10 2.34 1..50 6,15 6.03 1.93 1.20 5.37 3.32 6.66 6.24 3.95 4.03 2.09 1.80 0.67 5.98 1.53 0.78 3.60 *1.81 1.32 0.85 0.68 2.74 1.60 3.64 0.82 2.07 2.77 1.89 3.53 1.83 0.74 1.07 2.68 1.60 1.73 0.51 4.37 3.90 0.78 5.35 1.73 2,17 2,24 3.87 1.99 1.96 1.61 1.39 2.39 2.38 2.23 3.67 2.53 1.71 *1.79 3.34 3.05 1.73 1.23 1.12 1.93 1.03 2.94 1.25 0,02 2.24 2.56 1.31 2.82 2.18 1874 23.90 1875 31.51 1876 42.. 56 1877 38.06 1878 33.64 1879 30.42 1880 32.07 1881 44.21 1882 ■ 36.76 1883 37.09 1884 47.65 1885 45.14 1886 44.16 1887 35.47 1888 30.82 1889 1890 29.88 43.91 1891 30.99 1892 54.79 1893 36.49 1894 26,90 1895 28,32 1896 39,29 1897 28.91 1898 35.09 2.90 0.46 1.62 6.00 2.84 2.90 1.47 2.34 3.59 3.10 3.46 2.00 7.88 3.73 3.36 5.51 3.07 2.90 7.84 4.10 2.58 3.13 7.45 2.38 1.24 2.65 3.11 4,94 2.31 4.22 4.04 4.39 6.87 5.25 3.15 2.65 2.99 5.07 3.08 3.65 5.35 1.36 1.49 9.29 3.35 3.13 6.91 3.76 2.34 3.38 2.98 3.34 7,04 6.06 3.. 52 1.95 4.51 5.70 0.94 3.05 1901 1.41 0.48 0.58 2.90 0.61 2.60 3.58 0.63 2,29 25.80. 1902 44,51 1903 43,38 1904 29.93 1905 31.84 1906 1907 35.31 34.01 1908 31.44 Means 3a, 40 * From April 1894 to December 1894, inclusive, the values are for Winnebago, to September 1898 are for Rockford. The three stations are in the same county. All other values prior 205 Section 64 — Precipitation in Xortiierx Illinois. LaGrange, Cook County, III. — El&vation, 657 Feet. Year. Jan. Feb. Mar. Apr. May. June. July Aug. Sept Oct. Nov. I Dec. Annual. 1892. 1893. 1894. 1895. 1896. 1897. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. Means . 1.91 1.64 1.64 1.16 6.09 4.30 0.37 1.30 1.45 0.53 0.86 1.65 0.72 1.61 5.17 1.41 1.99 0.83 1.79 1.72 0.45 2.39 1.83 2.60 1.91 3.38 2.03 1.34 2.90 1.56 1.06 2.50 0.40 3.40 2.20 2.15 0.85 1.04 4.00 5.87 2.06 1.84 3.78 3.19 2.51 5.30 1.58 2.56 2.71 3.20 1.89 2.80 2.76 5.61 1.17 4.21 3.50 1.14 0.35 I 0.95 I 0.47 1.89 3.51 2.02 3.41 1.59 2.45 2.71 8.00 2.27 3.16 2.24 4.73 1.85 3.50 5.98 3.78 0.96 6.16 1.27 1.57 5.91 3.42 2.61 6.16 12 25 1 70 5.30 ! 2.96 6.23 2.84 2.09 8.87 2.00 5.69 1.10 2.63 5.39 3.74 2.97 i.57 0.80 6.92 2.77 4.59 3.97 1.86 8.80 2.18 1.73 3.40 5.64 4.81 1.95 4.38 2.87 2.00 3.56 10.64 7.51 2.08 5.91 2 06 5 54 0.79 3.55 3.06 3.69 3.33 3.56 2.65 4.25 2.49 2.16 5.53 6.19 3.99 4.54 4.28 5.72 1.30 3.54 7.75 1.40 4.07 4.24 3.57 3.80 0.81 0.52 1.04 0.77 0.85 0.33 4.21 2.54 1.12 1.65 2.09 1.50 1.59 1.65 2.72 1.05 0.89 2.24 2.26 1.45 5.09 3.03 3.82 2.69 1.53 3.32 1.04 2.68 0.37 T 2.77 1.49 i 2.27 1.93 2.00 0.71 6.04 0.10 1.36 1.56 1.63 0.32 1.33 2.31 2.08 0.99 0.46 2.36 1.81 1.34 1.67 29.84 31.8^3 44.12 30.94 31.81 25.. 52 46.33 25.77 31.35 3h.82 35.88 35.50 33.89 Section 64 — Precipitation in Xorthern Illinois. Lanarl-, Carroll Coiuiiy, III. — Elevation, SSS Feet. Year. i Jan. i \ 1 Feb. 1 Mar. I Apr. I May. June. July. i 1 ! i 1 Aug. 1 Sept.i Oct. 1 Nov. Dec. i Annual. 1887 ! 1.89 6.46 3.55 3.71 3.22 9.29 1.89 2.72 3. 17 12.32 3.18 9.57 3.81 4.96 6.42 0.78 4.39 3.68 2.91 0.38 2.96 2.63 4.76 1.24 4.71 1.36 1.84 2.34 2.40 1.02 5.43 1.58 1.64 3.13 1.10 1.87 3.71 3.63 3.02 2.63 0.81 2.06 1888 1.39 1.66 2.76 1.59 2.13 1.26 1.17 1.61 1.48 1.83 4.04 1.49 2.13 2.86 2.97 1.52 3.87 "3'26' 6.05 35 05 1889 31 17 1890 1891 31 74 1892 1893 1894 *3.66 1.60 2.92 5.58 2.12 2.72 1.91 1.87 10.51 1.88 1.12 3.15 5.24 4.48 5.13 4.10 *0.33 4.28 5.06 1.06 2.00 3.66 6.17 1.15 9.79 9.09 2.94 4.01 4.32 3.72 6.67 4.23 *3.19 1.61 3.23 0.59 7.23 1.67 4.46 0.27 2.26 6.26 5.03 7.90 6.05 5.13 2.69 3.51 *6.49 1.70 4.78 1.54 3.66 1.33 2.87 2.58 5.63 5.64 7.49 2.62 3.70 6.20 0.89 3.55 *3.68 0.86 1.97 0.39 3.45 2.67 2.32 1.39 3.08 2.02 1.20 4.29 1.95 1.42 1.16 2.23 *1.60 2.02 0.83 1.79 1.07 1.75 1.88 1.06 4.53 1.06 0.17 2.16 3.48 1.41 3.02 1.96 *0.63 1.41 0.95 1.46 0.34 1.73 0.72 1.26 2.78 1.71 2.65 0.96 1.71 0.93 0.49 1.59 1895 *1.82 0.49 2.48 1.85 0.27 1.48 0.90 0.46 1.06 *0.65 0.57 2.60 2.67 0.62 1.44 *0.29 1.02 0.89 1.52 0.20 2.35 0.70 1.27 1.90 *0.60 1.26 1.79 0.22 1.94 1.23 *0.70 1.21 3.20 2.66 1.31 1.51 2.75 1.44 2.94 2.68 3.06 2.44 1.51 3.02 2.31 *0.18 5.05 2.67 2.76 2.12 2.36 0.66 2.65 4.02 3.08 2.41 2.17 2.50 2.91 2.79 3.78 7.92 1.24 3.87 7.74 4.23 2.72 7.14 5.05 3.37 4.06 4.18 3.23 6.14 4.64' 20 25 1896 35 43 1897 22 89 1898 32.53 27 17 1899 1900 32 26 1901 17 31 1902 51 54 1903 42 63 1904 30 98 1905 36 45 1906 39 63 1907 . . . 33 42 1908 34 68 Means 33.58 * Values are for Zion, in the same county. 206 Section 64 — Precipitation" in Northern Illinois. Morrison, Whiteside County, III. — Elevation, 6S5 Feet. Year. 1895. 1896. 1897. 1898. 1899. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. Means. Jan. 2.91 3.01 0.30 1.31 0.82 0.82 1.04 2.53 0.94 2.34 3.98 0.77 1.73 Feb. 1.73 1.82 1.87 2.56 0.63 1.62 1.47 1.13 2.89 2.24 0.46 3.10 1.79 Mar. 1.83 3.33 4.42 1.94 3.12 2.92 2.46 2.41 3.86 3.13 3.36 1.66 3.47 2.91 Apr. 4.91 2.88 5.11 2.73 3.95 0.49 1.47 4.45 3.18 3.80 3.03 1.74 2.56 3.10 May. June 2.36 4.34 1.95 4.19 7.51 6,33 2.62 6.48 5.49 3.13 6.71 5.27 6.03 6.84 4.95 3.50 3.30 5.27 2.98 2.68 1.61 3.82 9.60 2.02 1.13 4.03 4.48 5.01 4.33 3.84 July. 8.28 6.55 3.05 1.68 2.78 5.35 6.42 8.66 7.40 4.04 2.52 4.10 9.19 3.67 5.26 Aug. 2.75 2.99 0.89 5.61 3.18 5.03 0.29 5.32 5.78 5.71 3.64 2.91 6.43 3.71 3.87 Sept 5.88 5.10 2.16 2.68 0.96 4.07 2.19 3.99 6.09 3.19 2.81 3.85 5.75 1.01 3.55 Oct. Nov, 1.00 0.43 3.38 3.39 2.75 0.83 2.78 3.57 0.60 3.23 1.38 1.44 0.59 1.95 0.97 1.40 1.20 1.29 1.31 1.03 2.91 1.05 0.02 1.91 3.17 IA2 2.83 1.58 Dec. Annual. 0.39 1.32 0.54 1.95 0.23 1.36 2.45 1.58 2.81 1.48 1.55 1.01 0.50 1.32 27.32 36.62 30.58 37.62 23.42 48.56 42.35 31.33 37.09 37.68 44.12 33.38 35.85 Values for 1895 are for Tampico, 15 miles distant. Values from March, 1896 to June, 1901, inclusive, are for Round Grove, 5 miles distant. 207 Section 64 — Precipitation in Northern Illinois. Ottawa, LaSalle County, III. — Elevation, 500 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dee. Annual. 1856 1.90 0.46 1.65 1.71 2.66 1.22 5.80 0.43 4.45 3.15 0.86 1.59 1.95 1.29 3.29 1.64 3.99 2.49 4.55 1.40 1.95 0.90 * * 0.14 3.06 2.98 5.24 0.70 2.54 4.16 3.26 2.70 3.15 1.97 1.42 5.28 1.38 3.68 * * 1.36 1.41 4.55 4.08 1.49 4.97 4.85 3.26 3.64 5.48 1.62 1.72 2.60 4.58 0.85 * * 6.20 3.65 8.36 3.12 2.20 3.60 3.61 3.64 1.79 '2!i6" 4.64 7.64 7.45 1.15 * 2.11 3.95 6.57 1.68 2.54 4.64 5.61 2.71 ;^.97 4.82 0.73 2.89 5.23 8.92 1.54 6.10 2.37 3.44 0.79 2.41 6.82 3.11 1.85 5.50 3.62 2.41 3.19 4.24 2.26 * * 2.38 0.89 3.55 1.66 1.88 5.17 7.55 2.74 2.58 3.89 4.72 0.11 3.48 '3!63' * 2.86 2.68 3.97 2.34 0.40 3.57 2.49 4.23 1.66 1.84 2.16 0.92 3.64 2.96 2.35 2.09 4.03 1.44 2.48 1.78 3.29 0.49 0.90 4.82 1.12 2.55 0.94 5.90 2.15 2.13 1.40 3.49 0.59 2.97 1.66 30 09 1857 1858 34.70 46 87 1859 27.89 I860 27 07 1861 38 89 1862 . . .. 55 71 1863 1864 2.43 0.45 2.85 1.28 1.07 1.52 5.17 1.57 3.73 2.21 6.27 1-35 2.94 5.01 5.73 4.23 1.96 4.40 1.90 * * 29 53 1865 1866 32 76 1867 . . .. 1868 1869 1.48 4.33 * * 1.60 2.80 2.71 1.51 3.89 0.56 0.63 1.10 1.63 1.16 0.17 0.46 4.73 2.53 2.24 0.91 1.87 1.43 0.26 1.87 1.23 1.00 0.65 1.97 1.88 1.42 * * 0.60 2.17 3.38 3.12 2.06 4.75 2.48 2.18 2.09 5.27 3.43 4.37 2.88 1.46 3.16 1.49 4.29 0.46 0.08 2.01 2.63 1.96 1.79 2.41 1.63 1870 5.28 * * * 0.43 3.33 2.22 1.80 0.27 1.74 1.84 2.16 1.19 5.77 0.28 1.74 1.42 2.03 0.31 2.09 2.01 1.91 1.86 1.70 1.22 1.79 0.99 1.98 * * * 1886 1887 1.82 1.80 1.91 1.94 2.86 1.45 2.20 2.38 1.22 1.37 5.98 5.24 0.63 1.60 1.76 0.63 1.13 2.54 1.30 2.07 5.25 0.86 2.19 3.25 1.88 1.16 1.40 2.28 1.52 3.03 1.58 0.70 1.65 1.71 2.38 2.10 4.53 2.10 1.41 2.35 1.80 1.93 2.26 0.15 1.53 2.07 0.64 3.70 1.77 3.33 2.56 2.70 3.30 2.57 0.82 1.32 4.47 5.21 3.21 2.91 3.51 4.89 3.10 4.87 2.09 2.02 2.55 3.87 2.89 0.39 1.23 2.44 1.87 3.96 3.56 5.23 1.51 2.02 3.38 1.88 3.12 1.50 1.53 0.61 2.55 5.08 3.93 5.15 1.63 2.69 3.48 2.84 1.08 5.39 4.36 3.99 1.84 13.25 1.95 4.01 1.06 4.24 0.99 6.72 5.08 5.60 2.15 5.64 4.19 3.00 3.68 2.37 4.84 8.17 4.24 1.12 2.01 4.61 6.87 3.99 9.80 2.49 3.03 1.02 2.22 6.90 5.80 1.42 1.96 2.67 10.51 3.78 1.89 3.39 2.64 2.50 1.77 3.65 1.17 3.58 5.67 0.34 4.45 4.92 1.02 0.80 4.79 8.63 2.99 1.30 5.70 4.53 5.47 10.49 1.94 5.14 1.69 1.45 6.92 3.05 3.93 3.06 1.77 2.00 2.72 5.11 0.81 0.77 1.75 2.26 2.43 0.74 4.31 3.02 7.24 0.81 4.40 4.90 3.58 4.12 4.57 4.49 2.03 3.15 2.77 0.60 3. ,92 2.48 1.27 2.56 2.29 7.18 1.47 9.38 1.89 5.90 2.15 2.26 3.20 6.76 6.03 3.27 2.13 5.09 4.94 0.35 3.39 23.60 1888 . . . . 30 27 1889 34.27 1890 31 16 1891 35 37 1892 45 52 1893 27 72 1894 29 72 1895 27 56 1896 38 50 1897 34.12 1898 49 01 1899 30 83 1900 37 87 1901 26 77 1902 55 45 1903 36 30 1904 32 22 1905 31 05 1906 29 18 1907 1908 Means 39.08 28.54 34.71 208 Section 64 — Precipitatiox ix Northern Illinois. Streator, LaSalle County, III. — Elevation, 616 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. I Sept Oct. Nov. Dec. 1893. 1894. 1895. 1896. 1897. 1900. 1901. 1902. 1903 . 1904. 1905. 1906. 1908. Means. 1.90 1.55 1.30 5.65 3.43 1.28 1.49 1.42 0.79 0.90 2.23 1.07 2.26 5.64 0.59 2.10 0.44 0.30 1.15 1.55 1.62 1.82 3.54 1.40 1.32 2.52 1.55 1.38 1.99 0.10 3.73 1.63 2.95 1.40 0.65 4.08 6.93 *2.00 2.85 3.49 4.66 3.79 5.76 2.20 2.77 3.02 2.53 3.27 6.17 1.03 0.41 2.63 1.88 3.00 0.45 1.24 0.75 2.17 4.81 3.91 4.22 1.40 2.92 4.15 2.57 3.21 3.62 0.80 5.98 1.13 6.00 2.50 2.44 1.24 4.37 2.48 4.46 4.77 1.79 3.70 7.16 3.48 0.96 2.53 3.27 6.70 3.24 1.82 1.63 2.85 10.64 2.07 2.11 3.01 3.10 3.95 1.69 3.30 6.00 5.75 2.71 0.62 5.22 3.13 3.02 8.59 2.43 4.60 4.10 1.39 7.61 3.62 4.20 2.60 1.52 .13 .56 .11 .04 2.39 2.15 2.25 5.08 0.41 3.07 3.00 1.90 3.44 1.10 4.20 2.73 2.56 2.20 5.26 7.60 4.15 2.39 4.25 5.58 0.39 3.38 1.00 0.05 0.23 2.99 2.47 2.18 0.63 3.24 1.02 0.20 2.64 1.64 0.51 0.68 1.39 2.80 4.54 2.07 4.20 2.47 1.23 2.57 1.38 3.48 0.78 T 1.73 2.75 2.06 2.36 2.29 0.97 2.10 5.89 0.10 1.32 0.77 1.93 0.34 2.15 1.74 1.78 1.57 1.41 3.06 1.41 0.92 1.72 Estimated. Section 64 — Precipitation in Xorthern Illinois. Sycamore, DeKalb County, III. — Elevation, S55. Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 1881 3.50 3.80 8.55 3.18 1.65 4.24 0.95 5.50 5.17 3.87 2.79 11.77 3.25 3.90 2.52 3.80 1.10 3.20 3.32 2.83 1.63 7.97 3.16 3.51 6.59 4.40 4.59 7.01 4.21 11.40 7.90 5.85 4.63 7.04 2.27 1.12 1.27 1.50 7.98 3.55 11.23 5.04 1.79 2.20 1.59 6.04 3.47 1.19 2.22 1.88 9.00 2.70 2.57 4.30 3.17 4.57 4.12 4.34 7.05 4.35 5.50 8.84 4.98 0.67 3.12 3.10 4.48 0.42 2.00 2.56 3.65 0.78 3.10 3.60 3.03 1.22 4.04 5.60 4.51 7.83 7.14 4.04 3.20 1.36 4.99 3.06 3.86 0.80 2.34 1.95 3.43 9.90 4.29 3.61 4.03 0.86 2.07 2.22 3.56 0.46 0.95 3.06 0.58 1.06 6.47 1.39 11.17 1.06 2.27 5.14 6.49 6.52 3.34 3.28 3.46 3.42 5.10 1.94 2.93 3.46 6.10 3.23 3.27 1.09 1.93 1.22 0.37 1.62 3.83 7.88 0.75 8.39 0.44 3.71 1.73 2.79 2.18 4.29 6.88 5.24 1.06 6.09 7.39 1.00 3.43 8.20 4.55 6.48 5.76 4.65 2.26 2.80 2.37 0.85 3.48 0.89 0.95 1.13 1.77 0.55 0.26 0.38 4.81 2.44 2.27 0.71 3.10 2.57 0.84 4.61 2.02 1.26 0.86 2.60 3.60 2.25 6.63 2.48 2.06 0.96 1.49 1.80 1.80 1.87 4.21 2.13 2.74 1.96 3.71 1.88 3.38 1.76 1.33 2.23 1.32 2.95 0.97 0.03 2.20 3.40 1.42 2.05 2.31 3.75 2.25 1.86 4.14 3.05 1.54 3.02 2.16 1.52 1.50 2.37 2.06 2.19 0.74 3.38 0.55 0.81 0.80 1.41 0.53 1.30 2.02 2.38 2.16 1.66 1.84 1.17 1.50 1.92 1882 1.31 2.15 0.71 2.66 4.10 3.93 1.01 1.13 1.64 1.91 1.73 1.83 2.50 1.35 0.50 4.64 3.28 0.37 1.63 1.27 0.70 1.83 1.31 0.50 2.99 3.88 0.79 1.91 1.90 4.95 2.15 1.55 1.85 4.50 1.16 1.16 1.15 1.60 1.21 2.12 1.35 0.30 2.03 1.31 3.57 1.59 3.00 1.19 2.72 1.87 1.52 1.45 3.03 0.30 2.93 1.98 4.85 0.65 2.02 0.55 3.85 0.89 2.59 1.39 1.57 1.95 2.01 2.22 3.26 1.03 1.44 4.31 5.42 2.14 1.96 3.86 3.27 3.10 4.66 2.98 3.06 1.49 3.31 2.59 6.10 3.41 4.06 4.31 5.14 1.08 2.05 3.47 2.58 4.50 4.81 4.59 2.87 1.24 2.74 3.78 1.65 0.96 1.15 0.44 1.96 4.76 2.91 3.14 1.80 2.66 4.60 3.07 43.54 1883 50.91 1884 44.86 1885 48.50 1886 34.40 1887 29.78 1888 28.13 1589 25.26 1890 29.35 1891 28.36 1892 45.64 ] 893 . . 33.05 1894 29.75 1895 23.19 1896 27.36 1897 30.28 1898.... 39.36 1 ^99 21.91 IKX) 37.38 1)01 21.35 1X)2 48.08 1903 42.50 1B04 35.28 1K)5 38.21 li)06 1907 36.50 37.00 1908 34.69 Means 36.64 20\) Section 64 — Pkecipitation in Noetiiern Illinois. Tishilwa, Bureau County^ III. — Elevation, 798 Feet. Year. Jan. Feb. I Mar. Apr. May. June. July. Aug. Sept Oct. Nov. Dec. Annual. 1865. 1866. 1867. 1868. 1869. 1870. 1871. 1872. 1873. 1874. 1875. * 1895! 1896. 1900 1901 1902 1903 1904 1905 1906 1907 1908 Means. 0.26 1.92 1.76 0.48 1.95 4.15 3.32 0.18 4.55 3.05 1.10 3.40 2.02 1.27 0.97 2.47 0.70 2.00 0.75 1.06 1.29 2.34 1.16 5.81 3.76 0.38 1.88 1.36 0.55 0.99 2.53 0.84 2.39 4.47 1.22 2.09 1.59 1.27 2.43 1.81 3.85 1.83 1.46 2.95 1.17 1.35 2.28 0.33 3.65 1.84 3.12 2.38 2.06 5.15 1.14 5.50 2.72 2.96 1.39 1.81 2.38 1.01 4.55 6.17 2.83 3.52 3.53 3.29 2.71 3.78 2.73 3.71 2.21 3.62 3.09 6.14 1.90 2.00 3.40 0.60 2.83 5.91 6.75 3.27 3.40 4.28 2.77 3.50 1.03 1.72 0.80 2.33 5.07 3.32 4.59 2.42 2.83 3.01 3.27 1.57 1.90 6.62 1.42 2.35 6.56 7.25 3.48 4.65 * 2.70 4.71 1.42 7.30 5.25 4.23 2.63 5.05 3.72 3.29 5.10 2.96 5.65 4.48 4.47 2.80 3.30 2.41 9.96 0.70 5.90 6.31 2.65 4.56 6.18 * 0.70 2.81 3.34 2.85 3.89 1.52 2.15 8.19 2.82 1.99 5.72 3.70 3.34 3.80 6.96 4.19 1.95 2.03 6.86 1.91 1.85 4.05 5.65 1.78 9.60 7.89 5.57 2.38 1.17 3.48 2.40 5.12 10.70 2.24 6.78 1.82 2.14 10.17 1.89 3.84 4.42 1.75 I 3.16 8.79 111.57 5.44 2.48 2.08 9.37 9.21 1.32 3.56 2.30 * 2.38 2.50 1.48 6.97 1.65 7.76 2.02 5.00 4.26 5.37 2.54 4.38 5.39 1.71 4.15 6.79 1.36 4.61 0.67 6.64 6.33 1.83 5.14 8.53 4.44 6.70 2.62 4.58 2.55 4.67 2.10 6.25 7.19 3.40 2.51 6.25 3.69 1.14 4.59 3.16 2.90 1.66 0.97 1.24 0.81 3.62 0.92 2.23 3.40 4.15 0.78 0.76 0.36 2.63 3.73 2.89 0.70 2.99 2.43 0.28 2.14 1.60 0.66 0.90 1.92 2.98 3.89 0.28 0.54 0.26 3.06 2.40 1.50 3.57 1.21 3.88 3.02 1.S4 1.52 3.45 3.47 1.59 1.28 1.40 3.87 1 2.94 0.74 0.83 2.60 * * 3.31 3.89 1.78 0.17 3.36 1.24 2.93 1.09 1.15 1.63 2.03 0.22 1.54 1.41 3.75 2.12 1.27 1.20 0.10 .1.90 2.03 1.60 2.97 2.10 1.59 1.36 2.62 0.83 2.15 1.83 50.00 34.32 27.67 51.31 46.05 39.95 35.02 48.06 33.04 30.60 45.38 29.38 36.69 25.19 51.68 36.85 33.91 32.97 36.90 41.69 34.37 37.67 Values from 1864 to 1875, inclusive, for Wyanet, 6 miles from Tiskilwa. Section 61 — Precipitation in Xortiieen Illinois. Walnut, Bureau County, III — Elevation, 717 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oot. Nov. Dec. 2.30 1.48 3.00 4.06 8.49 7.84 5.41 0.96 3.42 1.06 1.73 1.94 1.55 1.78 3.13 5.02 1.65 4.54 0.86 0.48 3.38 0.23 2.11 2.05 2.11 2.10 2.98 1.23 3.57 3.09 0.26 1.35 6.89 1.43 1.52 0.61 1.92 0.55 0.86 1.02 2.39 0.92 5.41 3.23 2.71 0.6* 2.60 3.55 0.87 1.57 1.51 5.17 4,12 3.81 6.32 2.63 5.94 1.20 2.06 0.17 5.01 1.45 5.05 3.71 1.25 4.94 1.35 1.33 3.43 0.25 2.27 1.31 3.96 2.08 5.22 2.78 5.22 3.98 1.20 5.51 4.47 2.63 1.70 0.96 0.36 1.57 1.99 1.82 6.68 1 69 5.05 2.95 1.91 2.78 0.84 1.57 1.50 2.78 3.17 1.35 3,88 3.03 6.12 6.60 4.74 3.48 1.64 0.29 1.03 1.25 2.57 0.51 2.43 4.16 3.53 1.58 2.06 0.82 1.37 1.25 0.38 1 3*^ 2 09 1.53 6 50 8 89 11.01 4,a3 4.99 3.63 1.89 1.81 1.57 1.88 2.65 4.38 4.59 1.96 5.38 4.. 53 6.69 2.98 0.53 1.32 2 22 1,55 2.89 1.69 3.31 1.38 5.34 4.53 3.96 0.37 0.06 2.18 0.74 1,80 3.63 3 8S 5 01 5.20 2.19 4.88 2.77 3.02 1.18 1.42 2.92 2.87 5.22 2.07 4.17 3.94 1.68 3.07 4.02 1.22 2.79 2.52 3.97 0.25 2.23 2.57 4.13 3.44 9.53 4.67 4.84 0.51 1.41 0.92 0.85 3.82 3.34 2.74 9.89 2.90 2.85 4.94 1.26 0.58 2.31 0.66 1.96 1.78 3.03 2.68 4.55 3.80 4.32 3.40 3.97 1.58 1.61 1.44 Annual. 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 41.69 26.78 27.05 25.80 35.37 31 .35 39.71 29.21 38.58 22.56 48.73 38.46 29.48 35.78 36.49 38.47 36.14 34.18 u s w 210 Section 64 — Precipitatiox ix Xortherx Illinois. Winnebago, ^yinnehago County, III. — Elevation, 900 Feet. Year. Jan. Feb. Mar. Apr. May. June. 1 July. Aug. Sept. Oct. Nov. Dec. Annual. 1857 3.26 2.08 4.88 0.78 2.41 2.16 1.65 2.71 3.58 2.00 1.58 4.98 0.95 3.41 * * *3.03 1.40 1.64 4.25 1.95 2.30 3.55 1.90 1.28 4.87 3.95 1.87 2.07 3.52 2.86 3.51 4.55 3.77 3.24 1.49 5.41 2.82 2.39 3.98 3.44 1.19 4.98 5.59 "2!66' 4.33 3.06 1.43 4.43 2.76 1.32 * * 2.20 4.14 3.50 4.17 4.40 4.66 2.74 0.70 3.63 3.63 3.39 2.14 2.98 0.43 1.74 4.91 3.41 3.59 2.09 3.46 4.48 3.18 3.64 6.87 2.82 4.28 5.39 3.67 5.05 1.46 1.56 1.90 4.65 3.82 5.53 1.25 * * 5.69 5.42 4.35 2.50 8.33 2.72 3.51 4.07 6.50 1.31 3.52 6.56 4.96 2.79 7.62 3.73 3.17 6.3*? 4.05 3.20 8.17 4.30 8.34 7.45 2.42 4.47 1.33 3.09 1.67 1.13 4.66 4.45 3.74 5.12 7.01 2.12 * 1.13 3.20 10.15 3.45 10.29 3.26 2.03 1.89 2.94 4.70 3.65 2.15 2.67 2.83 8.76 2.75 1.53 3.76 4.93 5.81 3.51 4.07 4.01 3.36 1.89 "5!78' ■2!i6" 5.83 6.17 5.03 1.58 2.93 2.91 3.74 * * 7.63 2.77 0.40 2.13 3.85 2.61 1.48 3.89 4.95 3.82 2.74 6.18 5.81 3.76 5.85 4.93 3.41 3.67 2.83 6.65 4.59 3.92 6.10 2.85 1.34 2.26 3.05 6.98 2.24 1.88 7.22 7.52 3.33 1.60 4.22 3.66 * * 2.27 0.10 2.55 1.24 5.15 0.80 1.27 2.92 1.92 1.37 7.13 2.57 5.88 1.21 1.53 7.66 2.95 3.83 6.02 4.09 2.85 3.42 2.56 5.59 2.57 5.48 6.89 5.96 1.63 3.57 9.09 4.19 1.53 5.23 3.85 3.92 * * 1.18 1.66 0.50 0.99 1.74 2.68 5.15 2.29 5.61 1.01 2.47 1.68 3.58 3.15 4.71 5.49 4.11 0.77 4.68 6.45 1.15 3.52 4.76 2.94 0.68 2.17 3.56 2.76 3.49 2.28 3.53 2.86 O.f.O 1.00 0.83 2.75 * 1.75 0.62 6.40 1.49 0.50 2.45 1.81 0.80 0.75 0.58 3.80 2.22 3.70 0.92 1.62 4.35 1.95 4.10 2.56 0.71 1.02 2.23 1.91 4.50 3.04 2.44 1.75 0.93 2.22 2.27 0.42 0.59 1.68 3.31 2.76 0.60 * * 2.17 1.73 2.10 3.71 2.12 1.67 1.79 3.07 2.18 1.28 1.81 1.52 2.10 1.20 3.06 1.15 0.13 2.29 2.85 1.45 3.66 2.04 1.30 1.88 0.79 3.30 1.84 1.52 3.62 2.76 0.74 3.84 1.03 1.30 2.86 0.78 * * 2.65 2.83 1.40 2.26 2.38 1.29 0.33 2.07 0.58 1.58 0.71 1.98 0.57 2.05 2.10 1.68 3.34 1.48 1.59 1.7/ 0.85 1.80 1858 2.37 1.28 1.14 2.66 3.78 2.86 2.05 0.27 2.49 2.86 0.82 1.39 2.87 * * *1.72 2.18 3.39 2.30 2.60 2.04 1.48 1.42 0.65 3.74 2.95 0.53 2.20 1.10 0.63 0.58 1.74 0.66 3.72 3.68 1.00 1.98 1.29 1.36 2.00 4.87 1.02 '6!36' 3.25 0.98 2.83 0.77 2.14 0.75 * * *1.30 2.00 2.73 1.55 1.76 2.04 1.25 0.39 1.54 1.38 3.07 1.49 3.22 1.47 1.43 1.81 1.38 2^17 0.76 2.57 1.77 45.16 1859 26 51 1860 1861 44 51 1862 1863 1864 28 90 1865 44 82 1866 1867 38.91 26 74 1868 35 31 1869 37 21 1870 * 27.17 * * * 1888 32 72 1889 28 05 1890 39 11 1891 1892 30.04 45 07 1893 28 52 1894 26 39 1895 25 41 1896 32 53 1897 29 27 1898 39 19 1899 30 89 1900 39 74 1901 24 43 1902 41 91 1903 42 55 1904 31 67 1905 35 99 1906 40 73 1907 39 52 1908 39 26 Means 35.05 * Values are for Roekford, in the same county, 211 Section 64 — Xoktiieex Illinois. Average Number of Bays with .01 Inch or More of Precipitation. stations. 1 i < 1-^ 7 5 9 8 11 10 4 4 5 5 8 6 9 9 11 8 12 9 8 7 10 8 11 10 5 6 8 7 9 7 11 11 12 11 12 11 9 9 10 9 12 12 9 7 9 10 13 9 9 9 10 10 13 11 8 7 9 10 12 10 6 5 8 8 11 8 8 8 10 9 11 9 7 7 9 9 12 9 6 6 8 7 9 7 6 6 8 8 13 9 10 6 12 11 12 10 8 7 9 9 13 8 9 8 11 9 12 10 6 5 8 9 11 9 7 7 9 8 11 8 8 8 12 10 12 9 8 1 10 8 12 9 7 6 9 8 12 8 & o o ^ CB C '4, Q 7 5 7 6 6 3 4 4 8 6 8 9 7 6 8 8 6 5 5 5 9 9 10 11 9 8 8 9 9 6 7 7 10 8 8 9 9 7 8 7 7 5 7 5 8 6 7 8 8 6 7 7 7 5 6 8 6 6 5 8 6 7 7 8 6 6 6 9 6 8 8 8 6 7 5 6 6 7 7 8 6 8 7 8 6 7 6 8 6 7 6 Aledo Antioch Ashton Aurora Cambridge Chicago Davenport, Iowa Dixon Dubuque, Iowa. Galva Henry Joliet Kishwaukee LaGrange Lanark LaSalle Morrison Ottawa Streator Sycamore Tiskilwa "Walnut Winnebago 7 14 21 14 38 37 17 35 16 19 16 15 16 20 4 13 19 15 16 14 16 20 10 10 Section 64 — Xorthern Illinois. Average Snoivfall. Stations. .c fo 1 < 3 ^ >> 3 ^ < 8 7.3 6.5 3.9 0.2 T 6.4 10.5 4.4 0.5 T T 7.4 11.3 6.9 0.9 T 0.2 7.5 8.8 5.5 0.6 0.1 0.1 8.6 11.3 6.8 1.6 T 0,4 10.0 11.7 5.2 0.7 0.1 T 8.4 8.1 4.8 0.3 T 0.1 8.6 8.7 5.3 0.8 0.2 9.4 8.8 7.6 0.8 T 0.1 8.4 9.5 0. ( 1.4 T 0.1 8.2 9.8 6.7 0.6 T T 6.6 9.5 5.6 0.9 0.3 0.1 9.9 11.2 6.1 0.9 0.1 0.1 7.8 11.4 5.2 0.4 0.1 0.1 6.5 6.2 5.2 1.2 0.1 0.4 7.3 7.3 4.7 0.5 0.1 T 8.8 9.9 4.2 1.2 0.3 8.0 8.9 4.5 0.4 T T 6.6 6.9 3.8 0.5 T 0.1 7.4 10.0 4.3 0.5 T 0.1 7.2 9.6 6.1 1.0 0.1 T 7.6 9.1 5.0 0.7 T 0.1 9.7 n.» 8.2 1.4 0.2 0.2 o Aledo Antioch Ashton Aurora Cambridge Chicago Davenport, Iowa Dixon Dubuque, Iowa . Galva Henry Joliet Kishwaukee LaGrange Lanark LaSalle Morrison Ottawa Streator Sycamore Tiskilwa Walnut Winnebago ...... 212 Section -XoRTiiEEx Illinois. Mean Temperature. stations. ..5 Aledo Antioch Ashton Aurora Cambridge Chicago Davenport, Iowa Dixon Dubuque, Iowa . Galva Henry Joliet Kishwaukee LaGrange Lanark LaSalle Morrison Ottawa Streator Sycamore Tiskilwa Walnut Winnebago 24.1 21 20.7 19 22,1 19 20.S'22 22.3 24.0 21.4 20.5 18.6 22.3 23.1 24.4 20.3 23.0 20.8 22.3 21.2 24.0 25.1 19.6 23.6 23.0 20.7 6|39.5 49.7 61. ,1136.5144.4 57. ,9 34.7 47.8 59, ,4 34.6 48.0 59, 136.3 50.4 02. 534,9 46.256, 035.540.1 61, 6134 533.6 36.6 7,36.9 637.0 833.8 8l35.5 6 33.3 36.8 35.0 37.0 38.5 9 33,1 1 136.0 237.5 33.7 48.759 49.1 60 49.861 50.0161 48.7161 47.768, 47.5158 47.7158, 49.8 60, 49.3'60, 50.661 49.8 47.1 49.1 51.2 47.8 2 65.4 8 67 2 68 4^70.0 6 66.5 l'70.2 69.6 69.2 69.8 70.4 69.0 68.5 68.2 67.9 70.1 68.6 70.9 70.5 67.8 71.0 68.3 1 71 169 8^70 2 71 273 3t71 172 72 2i71 4172 4 72 9|71 70 71 70 72 71 72 72 69 72 73 70 ,8 65 2 63 ,9 64 ,0!63- l|65 2^64 ,8165 ,064 8l63, 5 65, 53.5 49.6 51.5 8j51, 7153 8'53, 4 53, 7j51. 9151. 6!53, 65.5152.6 64 63 64 62 63 64 63.4 52.1 51.3 52.1 50.3 51.9 63.1 63.2 53.9 60.3 52.6|38 54.7|38 51.2|36 27.3 25.7 24.4 26.4 26.4 29.3 27.6 25.4 26.1 25.9 28.6 27.7 26.2 26.8 9 26.3 27.5 49.5 46.8 47.8 48.1 49.6 48.7 49.6 48.2 48.0 49.2 49.8 49.4 47.6 48.3 47.2 49.4 25.048.4 29.2160.2 27.950.3 25.6 46.9 26.3 27.2 26.5 49.1 50.3 47.4 Section 64 — Xorthern Illinois: Lowest Temperature. Stations. n-1 t-i^ i § "3 1-5 §> 'S. >-i < 27 38 47 46 23 36 42 41 24 36 43 43 27 34 40 39 27 41 50 46 27 40 50 47 29 39 49 44 25 34 43 38 26 39 40 41 27 34 46 41 24 33 41 39 28 38 43 41 26 32 40 39 27 37 43 41 22 31 35 36 30 42 49 49 27 37 41 43 29 37 42 42 27 38 43 42 24 37 40 40 27 38 49 48 29 37 44 37 25 32 41 40 Aledo Antioch Ashton Aurora Cambridge Chicago Davenport, Iowa Dixon Dubuque, Iowa . Galva Henry Joliet Kishwaukee La 3.42 3.17 2.43 2.91 3.57 3.67 4.73 0.47 2.85 6.48 7.64 0.72 2.82 3.08 2.48 1.00 8.72 7.02 4.65 0.47 1.69 2.45 3.97 7.30 4.91 5.58 4.24 2.48 4.89 3.94 3.98 1..39 5.61 3.24 4.14 2.39 2.78 9.04 2.24 1.56 3.61 3.97 2.26 2.74 3.39 3.26 4.95 4.54 1.25 t).60 1.02 3.14 2.04 4.42 1.88 3.38 1.38 1.92 0.57 4.13 2.64 3.57 2.72 2.30 1.23 2.39 5.71 0.73 0.44 2.50 2.27 4.69 1.02 3.26 1.27 5.39 1.29 7.42 7.22 4.13 1.36 l.o9 6.60 2.78 3.14 0.76 2.16 2.96 2.84 2.00 3.72 5.09 2.{)1 4.81 8.31 6.50 0.60 4.46 0.74 3.56 0.65 4.13 3.65 1.15 9:63 4.51 2.83 0.97 3.72 3.09 4.05 1.53 2.93 5.76 5.28 4.68 2.53 4.79 2.61 2.12 2.00 2.35 3.02 4.42 4.92 4.86 0.93 6.05 5.24 2.94 2.64 6.78 5.78 6.67 1.78 4.92 2.94 0.82 3.60 1.66 2.01 3.24 2.15 0.70 2.33 1.61 3.92 1.53 1.67 2.87 1.10 1.41 1.53 4.27 3.37 0.80 2.26 1.00 3.46 4.86 5.68 3.96 2.17 1.75 5.56 3.76 3.57 4.80 2.32 1.81 2.14 2.29 2.28 3.45 0.71 1.20 0.70 1.45 0.67 0.23 0.04 3.00 2.78 2.90 0.90 3.78 2.13 0.10 2.77 1.00 0.35 0.71 2.24 4.00 1.33 4.85 2.40 3.13 1.09 1.81 0.71 3.82 0.31 0.51 1.93 4.50 3.13 1.21 2.09 2.00 1.46 2.20 0.71 2.63 3.65 0.91 4.93 1.92 4.26 2.08 4.19 2.19 1.04 1.34 1.62 2.67 2.91 1.79 4.08 2.72 2.21 2.92 4.17 2.20 3.48 2.03 2.25 1.87 0.80 2.83 0.85 0.12 2.45 2.42 1.68 1.89 2.31 26 10 1857 30 51 1858 53 26 1859 30 12 I860 34 15 1861 30 29 1862 48 33 1863 32 27 1864 30 97 I860 37 02 1866 1867 35.75 24 62 1868 35 75 1869 1870 1871 42.12 23.57 32 15 1872 38 82 1873 38.58 1 874 25 04 1875 39 29 1876 43 03 1877 39 82 1878 31 46 28 97 1880 39.89 1881 41 05 1882 41 49 ] 883 39 53 1884 41 80 1885 32.40 1886 28 60 1887 27.30 1888 38 22 1889 35 05 1890 25 26 1891 32 89 1892 1893 35.66 31 72 1894 30.99 1895 35 72 1896 36 14 1897 28.83 1898 40 08 1899 30 99 igQQ 32 99 1901 26 02 1902 49 32 1903 39 85 1904 3o.49 I9O0 32 45 1Q06 29.05 1907 34 88 1908 33 96 Means . — 34.75 230 Sectiox 65 — Precipitatiox ix Central Illinois. Philo, Champaign County, III. — Elevation, 700 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept, Oct. Nov, Dec. Annual. 18S5. 1886. 18S7. 1888. 1S89. 1890. 1891. 1892. 1893. 1894. 1895- 1896. 1897- 1898. 1899. 1900. 1901. 1902. 1903. 1904. 1905- 1906. 1907. 1908. Means . 2.28 0.81 2.67 1.23 6.35 0.89 1.69 1.02 2.38 1.08 1.06 4.25 3.62 2.50 0.16 2.01 1.02 1.45 3.17 2.18 2.55 7.60 1.79 2.34 0.71 2.94 2.05 2.19 3.47 2.10 3.71 4.51 3.28 1.28 1.57 1.56 1.28 2.31 4.13 1.99 1.56 3.16 1.25 1.68 1.86 0.16 4.25 3.90 2.62 2.77 1.36 2.35 4.32 2.21 3.87 3.04 1.08 0.77 3.68 8.71 2.31 1.89 3.11 3.18 1.45 6.57 1.10 4.38 4.22 3.37 2.55 3.37 2.62 1.04 3.95 2.46 7.79 8.28 3.63 2.38 1.38 3.48 2.84 0.87 0.82 1.80 1.47 5.50 4.06 3.79 1.65 2.42 4.17 3.57 3.36 5.00 6.68 5.88 3.84 1.14 7.43 6.38 2.20 0.82 3.99 1.97 4.93 4.44 6.19 2.66 2.23 2.32 3.05 4.62 4.37 3.43 7.65 5.12 5.33 1.50 5.11 11.16 5.14 3.15 2. SI 1.67 4.44 2.73 3.45 6.22 3.78 2.60 4.55 0.72 7.38 3.36 2.71 3.54 2.48 5.98 1.79 3.34 3.25 0.98 8.86 4.47 2.02 1.52 3.10 0.66 2.53 3.01 7.27 3.48 1.98 1.82 6.35 3.73 5.59 3.49 2.17 6.00 4.87 6.08 2.64 2.12 3.36 2.77 0.35 0.84 1.81 4.21 4.29 0.46 1.22 1.28 6.41 1.20 2.29 2.93 6.88 2.44 5.39 2.39 5.65 1.31 2.20 4.03 2.42 2.30 3.14 3.14 4.09 3.82 3.72 2.84 2.90 2.07 3.13 2.25 4.32 7.75 4 26 1.18 2.64 1.50 0.59 1.16 3.65 5.02 3.72 5.02 0.45 5.23 0.50 1.64 1.19 4.06 1.77 3.17 4.79 3.80 0.58 1.59 4.41 0.40 0.81 4.50 3.21 2.22 0.82 0.50 0.65 0.76 0.85 0.20 0.54 5.55 4.22 2.26 3.57 3.39 2.87 0.53 3.11 1.74 2.18 0.35 2.80 1.5S 37.27 2.96 4.05 32.07 4.41 2.12 43.32 3.48 2.04 39.54 2.36 0.13 35.14 6.14 1 .55 28.89 4.92 1.80 41.41 3.48 1.28 35.91 2.13 2.19 32.82 3.24 4.99 26.46 3.41 0.83 35.36 5.08 2.65 34.56 3.20 2.23 45.64 2.16 2.56 29.22 3.56 1.34 39.77 1.36 3.75 33.33 3.23 3.12 41.62 2.04 2.20 32.00 0.35 0.76 33.44 1.01 1.87 3o.00 4.75 3.93 38.58 2.27 3.46 42.41 3.27 1.32 34.61 3.13 2.25 35.74 Section 65 — Precipitation in Central Illinois. Pontiac, Livingston County, III. — Elevation, 5Jf6 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 1903 0.80 3.92 1.80 3.07 5.62 1.01 2.70 3.23 1.84 1.89 1.78 0.15 4.52 2.24 2.54 5.73 2.17 3.28 2.74 2.90 3.23 4.94 3.63 3.45 2.18 3.09 4.83 3.69 4.36 2.67 6.33 1.77 3.28 8.72 4.52 1.39 1.95 1.70 2.35 3.00 1.65 2.01 6.35 5.37 1.78 2.39 5.66 2.35 4.15 2.60 2.45 1.82 0.80 4.47 1.25 2.23 3.62 5.79 2.26 3.56 4.59 1.53 3.56 2.76 0.17 2.53 1.61 0.61 0.92 1.43 1.06 0.06 2.26 2.58 2.04 2.61 1.77 1.98 2.14 1.71 2.62 3.05 1.51 2.17 35 63 1904 35.72 1905 29 70 1906 27.99 1907 1908 38.30 33.80 Means 33.70 231 Section 65 — Precipitation- in Central Illinois. Rantov.1, Cliampaign County, 111. — Elevation, 768 Feet. Year. Jan. Feb. Mar. Apr. May. June., July. Aug. Sept Oct. Nov. Dec. Annual. 1891. 1892. 1893. 1894. 1895. 1896. 1897. 1S98. 1899. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 0.96 1.60 1.91 1.34 0.86 3.88 3.46 2.23 18 .57 .14 .95 .85 .47 5.69 1.49 Means. 2.14 2.41 3.57 1.77 0.65 1.38 1.18 1.76 1.66 2.48 1.54 1.90 3.23 1.38 1.50 1.50 0.08 4.66 1.92 2.28 2.60 2.75 0.95 0.87 3.41 7.20 3.49 2.72 3.98 3.09 1.40 6.78 1.31 4.09 3.54 3.00 3.14 6.04 7.23 3.58 2.55 1.68 3.54 2.04 0.88 0.92 1.42 2.72 6.26 4.62 3.70 2.23 2.19 4.83 8.17 3.89 4.39 1.41 4.95 2.23 5.94 5.81 4.69 4.38 3.29 3.77 3.29 4.01 2.51 3.08 10.66 4.38 1.11 2.37 3.40 4.08 6.73 4.99 1.81 7.31 4.83 13.54 6.13 1.11 2.68 2.30 5.45 1.71 3.32 4.50 4.35 3.51 0.38 0.41 7.47 6.86 5.39 1.87 3.10 5.96 0.51 5.69 2.73 6.60 4.73 3.49 6.17 2.17 3.94 1.56 0.20 2.45 1.39 3.83 0.58 3.87 2.61 5.91 4.37 6.09 4.66 3,16 2.60 5.75 6.21 1.89 3.36 0.93 4.38 5.21 5.42 5.73 0.68 3.86 2.59 5.53 2.71 4.73 1.25 3.39 3.75 4.74 2.26 1.43 3.45 0.62 0.76 0.39 0.47 0.22 0.58 4.58 1.39 0.38 1.78 5.01 4.56 2.19 1.58 3.25 2.25 3.80 3.28 1.65 2.82 1.63 2.37 1.34 0.10 2.62 4.91 2.17 2.70 1.19 1.39 2.25 1.16 6.82 0.30 2.32 1 .98 1.58 0.93 3.49 2.96 2.62 1.25 1.58 3.08 2.71 1.66 2.13 36.81 30.16 27.97 35.12 33.01 34 32 44.83 31.91 41.77 33.75 50.00 36 38 36.39 33.67 40.07 40.94 36.58 36.71 Section 65 — Precipitation in Central Illinois. Rushville, Schuyler County, III. — Elevation, 670 Feet. Year. Jan. Feb. Mar. Apr. May. June. July Aug. Sept. Oct. Nov. Dec. Annual. 1889 1.70 2.99 1.05 2.07 1.16 2.70 1.75 1.56 6.03 1.86 1.43 2.09 2.90 3.02 2.40 0.37 1.72 0.81 2.49 3.49 2.49 3.77 2.41 1.03 0.78 3.79 2 06 4.93 1 .53 1.72 2.92 4.72 1.35 1.20 0.25 2.13 2.09 0.81 1.70 5.90 0.67 1890 1891 1892 1893 1894 1895 1896 1897 2.33 4.49 7.68 9.10 3.11 2.88 4.45 3.42 4.74 7. 58 7.36 2.47 3.32 4.31 3.92 2.57 2.60 3.03 4.21 3.88 3.72 4.19 4.78 5.95 2.45 0.67 5.53 9.61 2.14 7.94 0.60 1.91 2.06 4.85 1.77 3.64 0.61 3.18 2.96 8.32 3.44 5.85 i.49 2.34 1.27 0.22 1.12 0.53 1.59 30.35 41.16 39.94 37.51 34.09 38.20 37.38 tl898 6.68 4.26 t3.53 2.63 4.32 3.99 3.87 5.39 4.82 0.89 1.29 3.S7 2.22 3.43 3.76 to. 71 2.86 1.98 0.22 3.11 0.52 0.84 0.40 1.59 2.47 1.96 1.48 1.07 2.00 0.97 0.03 1.03 2.24 1.30 3.05 2.14 0.97 2.02 0.39 1.75 2.67 0.95 2.09 1.72 2.50 2.00 0.95 1.72 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 Means 0.89 2.10 2.50 0.67 1.08 3.07 0.51 1.75 5.86 1.30 2.14 1.99 5.42 1.21 1.47 1.50 0.69 1.07 1.90 0.25 3.60 1.94 2.75 0.96 3.37 4.67 2.45 5.05 1.75 3.49 2.83 0.73 2.52 1.14 tl.09 1.89 2.76 5.63 6.60 3.53 3.30 3.99 4.51 4.03 8.38 2.72 0.69 2.72 4.41 4.63 3.23 1.73 3.66 7.07 4.26 2.58 1.30 t3.86 8.34 2.26 4.11 5.33 3.84 4.26 4.88 3. SI 4.25 1.82 2.65 4.38 3.13 4.39 2.83 2.52 6.82 3.81 4.10 3.00 3.89 0.70 6.45 4.26 3.25 3.02 3.83 5.94 2.64 3.43 36.65 28.46 23.03 43.31 32.61 38.00 32.52 32.44 38.64 34.23 35.55 t Values from September to December, 1898: all of year 1890: from April to September,inclusive, 1900 and June to October, inclusive, 1901, are for Astoria, 13 miles distant. 232 Sectiox 6d — Precipitatiox ix Cextral Illixois. Springfield, Sangamon County, III. — Elevation, 009 Feet. Year. Jan. Feb. I Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dee. Annual. 1S79- 18S0. 18S1. 1882. 1883. 1884. 1885. 1887. 188S. 1889. 1890. 1891. 1892. 1893. 1894. 1895. 1896. 1897. 1898. 1899. 1900. 1901. 1902. 1903. 1904. •190o. 1906. 1907. 1908. Means . 2.70 0.84 2.48 1.96 1.51 2.81 2.19 1.09 3.03 2.13 5.72 1.16 1.14 0.65 2.51 1.12 1.77 5.91 5.81 1.51 0.88 1.80 1.01 1.44 1.98 2.13 2.99 6.17 1.77 2.35 2.89 5.85 7.92 7.53 4.24 0.94 1.86 4.26 2 03 1.64 2.01 2.o9 3.41 3.47 2.58 1.03 2.11 1.15 2.70 2.52 4.85 1.31 1.01 3.0o 1.49 1.18 2.18 0.30 4.28 2.84 2.37 4.45 4.92 1.36 3.70 0.17 2.45 1.41 3.48 1.97 2.20 3.21 2.69 4.19 3.09 1.61 1.25 4.47 9.65 ,9o .50 .96 3.23 1.96 3.85 4.42 2.49 6.36 2.98 2.89 1.41 0.71 2.94 2.81 7.19 10.23 3.36 2.49 1.91 3.85 3.76 1.12 1.06 1.23 3.03 3.99 4.81 2.02 2.26 2.80 4.48 5.76 2.86 10.59 6.01 3.79 2.78 3.56 1.92 8.61 6.64 4.33 1.96 7.51 7.41 2.8 2.55 2.49 2.19 5.12 11.81 2.49 1.88 1.80 5.28 3.74 2.28 3.70 2.94 7.27 2.47 4.96 12.71 8.40 6.20 4.18 3.83 3.07 5.50 3.65 4.50 2.11 2.51 1.99 1.56 3.49 6.45 4.11 4.76 2.45 1.45 5.34 10.10 2.13 2.34 2.31 3.03 3.29 1.38 3.05 3 4.57 4.15 1.52 1.S2 3.37 1.89 3.77 3.62 1.82 0.05 1.01 4.59 2.14 2.14 4.44 5.63 1.60 .06 .53 .51 .16 .34 .51 2.89 0.58 1.41 1.59 4.25 3.99 0.93 6.70 1.37 2.91 3.82 1.80 4.03 3.13 0.95 1.54 4.82 4.19 1.05 1.43 0.78 1.03 4.65 1.89 1 2 1 2 4 3 4 2 28 86 76 87 86 40 81 44 92 5.12 2.92 2.63 4.70 4.88 7.13 2.62 3.01 0.84 3.15 6.43 1.21 1.06 4, 7, 2 1 4 0, 1 3 2, 2 2.80 5.42 0.35 6.82 3.33 5.15 1.95 2.30 2.48 3.96 2.40 3.77 0.92 1.22 1.25 2.04 10.02 3.76 6.08 2.74 6.30 0.80 0.85 3.61 2.86 1.30 1.88 1.05 0.16 0.85 0.27 1.76 0.52 6.1b 4.08 2.63 1.78 2.15 1.50 0.11 3.66 1.46 1.36 0.29 .15 2.44 5.12 1.60 6.93 2.60 3.48 1.30 1.44 1.74 1.36 3.41 4.05 1.29 5.49 4.19 1.57 1.63 3.28 1.88 4.94 2.94 1.84 2.61 1.06 2.82 0.98 0.02 1.60 3.13 1.87 1.17 2 58 2.88 1.10 4.81 3.15 3.17 5.19 2.52 0.80 3.35 1.99 2.00 0.26 1.59 1.78 1.03 3.10 8.08 0.31 3.07 1.83 1.87 0.41 2.70 2.23 1.50 0.57 1.72 3.14 2.79 1.62 2.35 30.93 56.51 53.21 48.79 43.18 38.61 31.69 25.15 40.79 33.31 28.68 33.27 42.47 34.73 28.34 35.01 35.73 37.58 56.28 38.80 30.36 25.51 36.71 28.33 30.63 29.47 35.49 41.08 29.68 36.70 233 Sectiox 65 — Central Illinois. Average Number of Days with .01 Inch or More of Precipiiation. stations. Alexander Bloomington . . Bushnell Carlinville Charleston Coatsburg Decatur Griggsville Hannibal, Mo . Havana Hillsboro Keokuk, Iowa. Knoxville LaHarpe Lincoln Martinsville . . . Martiuton Minonk Monmouth Pana Paris Peoria Philo Pontiac Rantoul Rushville Springfield . . . 10 10 106 94 66 102 106 82 101 73 109 84 104 111 82 72 92 79 92 92 97 92 86 99 73 101 105 96 14 Section 65— (^extkal Illinois. Average Snowfall. stations. Alexander Bloomington . . Bushnell Carlinville Charleston Coatsburg Decatur Griggsville Hannibal, Mo . Havana Hillsboro Keokuk, Iowa. Knoxville LaHarpe Lincoln ■ Martinsville . . . Martinton Minonk Monmouth Pana Paris Peoria Philo Pontiac Rantoul Rushville Springfield . . . a oj^ 15 16 15 17 16 12 15 '17' 15 14 37 16 14 20 16 18 13 15 19 'ie' 21 6 17 17 25 6.3 7.2 5.6 6.1 4.7 5.7 6.3 'h'.i 6.3 5.1 6.4 7.1 7.6 7.0 5.3 6.9 6.1 7.9 0.7 6.0 9.0 7.1 6.5 7.1 3.3 8.2 4.6 7.21 4.6 7.4 6.4 8.2 7.6 '8.3 8.9 6.4 6.1 8.2 9.5 7.7 4 9.2 8.4 7.7 5 '6.8 5.4 9. 8, 7.1 6.2 3 3.3 4.1 4.4 3.3 3.7 3.7 3.6 4 5.2 3 3.2 3 5.2 4 2.2 '3 3 5.2 4.7 4 3 0.6 1.1 0.7 0.7 0.5 0.7 0.4 i'.o 0.4 0.6 1.0 0.7 0.3 1 1 0.3 '6.4 0.1 0.7 3.9 0.1 0.4 T T T T 0.1 T "t 0.1 T T T T T T T 0.1 T T T T 0.1 0.1 0.1 T T 0.1 0.2 T "t T T T T T 1.1 1.6 1.7 1.3 1.0 0.9 1.9 0.9 1.3 0.7 1.4 2.5 1.6 2.0 0.6 2.3 3.2 1.4 1.0 i'.b 1.6 0.5 2.6 1.3 3.3 3.9 2.4 3.2 3.1 3.1 3.9 '2.8 2.8 4.0 3.1 3.6 3.4 2.8 3.5 3.6 4.5 3.6 3.4 "2!9 3.3 6.8 3.9 2.8 3.0 21.7 26.6 22.2 22.3 19.0 22.8 24.5 23!6 23.4 20.5 21.4 27.4 28.1 23.1 17.9 24.1 29.1 26.9 18.5 26!? 19.8 30.4 30.8 22.8 20.8 234 Sectiox 65 — Central Illixois. Mean Temperature. stations. •— 1 i •-5 i2 i t i s ►-5 >. 3 ^ lb 27.3 27.1 41.1 53.0 64.0 72.0 76.4 17 25.4 20.2 39.4 51.6 63.3 71.8 75.7 15 25.3 24.4 39.0 52.5 64.0 72.5 76.9 18 29.0 28.8 42.4 53.9 64.2 72.9 76.5 23 28.0 28.9 40.3 52.9 63.5 72.7 76.5 16 25.1 26.2 39.6 52.3 64.0 71.5 76.7 17 26.6 25.9 40.8 52.3 63.5 71.8 75.8 23 26.9 28.0 40.9 54.0 64.2 72.6 76.7 17 27.9 26.9 41.8 53.5 63.8 72.5 76.4 16 27.4 27.3 41.8 53.0 64.0 73.6 77.2 14 30. 28.4 42.6 .53.3 65.0 72.8 76.6 37 23.7 27.5 40.4 52.3 63,1 72.1 76.9 18 22.1 22.5 35.8 50.2 61.7 70.0 74.7 29 23.8 26.7 38. 2 .51.3 62.9 71.4 76.6 20 27.3 27.0 39.0 52.3 62.9 71.6 75.9 20 29.2 29.5 42.0 53.5 64.2 72.6 76.5 21 23.9 24.0 36.6 49.4 60.7 69.8 74.2 15 23.9 23.4 37.5 50.1 62.6 70.0 74.9 16 22.8 22.2 38.2 51.0 62.3 70.4 74.7 22 28.2 29.3 40.7 o3.3 63.1 71.6 76.5 lo 28.6 26.9 40.5 51.1 63.6 72.6 76.1 33 23.1 25.9 37.0 50.9 61.7 70.9 75.4 24 25.8 26.1 38.8 51.2 61.8 70.8 74.8 6 25.9 23.5 41.4 .50.0 62.1 69.5 74.7 17 25.4 23.7 39.3 50.5 62.3 71.2 75.8 17 26.1 25.7 39.9 52.9 63.3 72.2 75.7 33 26.3 29.1 39, 52.0 63.5 72.3 76.5 > « ^ iz; Q 56.0 42.2 31.0 56.0 40-5 29.3 55.9 39.8 29.4 56.4 42.4 32.6 55.6 42.0 32.6 52.5 41.0 28.7 55.7 41.2 30.6 00.9 41.8 31.6 56.0 41.9 31.3 57.2 41.8 31.4 o7.5 43.7 32.4 o4.4 39.7 29.0 52.3 38.5 27.3 .54.6 39.5 28.1 .55.0 41.1 31.5 00.0 41.7 33.7 52.6 39.5 28.8 54.1 39.4 27.0 53.7 38.7 27.4 00.3 41.6 32.3 54.9 42.1 29.5 52.0 37.5 28.1 53.1 39.3 30.2 54.2 40.8 29.6 54.0 39.4 ?9.6 54.8 40.1 31.7 54.6 40.7 31.3 Alexander Bloomington . Bushnell CarlinviUe Charleston Coatsburg Decatur Griggsville . . . Hannibal, Mo. Havana Hillsboro Keokuk, Iowa Knoxville LaHarpe Lincoln Martinsville. . Martinton Minonk Monmouth . . . Pana Paris Peoria Philo Pontiac Rantoul Rushville Springfield . . . 68 65 3 4 4 5164 65. 67. 66. 66. 67.9 69.2 3 52.8 51.7 52.0 53.7 52.9 51.7 52.2 53.0 53.0 53.3 54.0 51.8 49.4 51.2 52.1 53.4 49.7 50.2 50.1 52.8 52.5 49.9 50.9 51.0 51.0 51.9 52.2 Section G5 — Central Illinois. Loivest Temperature. Stations. i cS o- (^ S < -17 -Ti —6 IS —24 -24 — 1 15 -17 —27 12 -21 -23 22 -17 —23 — 1 22 -IS -29 -3 20 -22 —25 20 —20 -25 -2 12 -15 —25 19 —15 -26 3 15 -20 —22 -2 23 -26 -27 -6 14 -24 -28 -3 9 -20 —30 —3 13 -20 -25 18 -22 -22 —4 22 -22 -23 15 -16 -28 — 1 8 —20 -27 -3 10 —24 —3 22 -12 -21 -2 22 -27 -26 -6 17 -25 -24 -13 17 —13 —23 3 22 -24 -24 — 1 13 —16 —26 12 -22 -24 2 19 >. be C. 3 -5 < ^ 46 44 23 41 37 22 47 42 26 49 47 25 46 45 25 49 48 28 45 43 20 50 48 29 47 47 32 48 47 32 49 48 26 50 47 30 42 43 19 48 42 23 45 42 26 46 44 25 42 37 20 42 40 22 43 40 IS 48 47 26 45 40 24 48 41 26 41 3S 17 47 46 33 42 44 24 46 4S 24 49 48 31 Alexander Bloomington. Bu.shnell CarlinviUe Charleston Coatsburg Decatur. . (;rigg.sville . .. Hannibal, Mo. Havana Hillsboro Keokuk, Iowa Knoxville. . . . Lallarpe Lincoln Martinsville. . Martinton Minonk Monmouth . . . Pana Pari.s Peoria Philo Pontiac Rantoul Rushville .... Springfield . . . -18 —27 -13 -24 -14 -27 —14 —23 -12 -23 —19 -29 -15 -2» -16 -25 -18 -25 -15 -26 —13 -22 —22 -27 -16 -28 -17 -30 -15 -25 —11 -22 -17 -23 —16 -28 -16 -27 -12 -24 —11 —21 -22 -27 -14 -25 -12 —23 — lo —24 -16 -26 -14 -24 235 Section Go — Central Illinois. Prevailing }Yind Direction. stations. — 1 i 1 < 1 < 1 1 > 1 1 17 sw. NW. sw. SW. SW. sw. sw. sw. sw. sw. sw. sw 37 NW. NW. NW. SE. s. s. s. s. s. NW. NW, NW, 4 R. NW. s. NW. s. s. sw. s. s. s. s, s 29 NW. NW. NW. S. s. s. sw. s. s. s. s. s. Hannibal, Mo. Keokuk, Iowa Peoria Springfield . . . sw. NW, Section 65 — Central Illinois. Highest Temperature. stations. 0! 3 3 •-5 3 < a ^ > o 1 95 99 109 102 106 98 78 68 98 103 108 104 103 93 78 65 94 102 111 102 103 97 75 67 95 100 111 106 103 94 79 69 94 99 106 99 100 92 76 64 94 100 111 101 99 91 77 63 97 100 109 103 103 94 78 65 95 101 110 102 103 94 80 68 91 100 108 100 101 9] 78 69 94 100 109 100 98 90 76 67 99 101 109 104 102 94 78 69 92 100 108 102 99 92 79 69 94 101 108 100 100 92 78 70 95 100 108 100 101 91 78 60 95 99 112 101 102 93 79 651 93 98 109 104 99 93 05 99 102 106 101 104 95 76 65 92 102 106 100 104 92 74 60 93 100 107 103 102 93 74 63 93 99 107 104 103 91 78 70 98 100 106 107 103 92 78 65 98 101 106 104 105 90 SO 71 97 100 104 101 101 93 76 64 90 96 98 99 96 85 71 61 95 100 106 102 103 92 75 63 94 103 108 101 100 92 78 68 92 98 107 100 99 91 77 67 Alexander Bioomington. Bushnell Carlinville Charleston — Coatsbiirg Decatur Griggsville . . . Hannibal, Mo Havana Hillsboro Keokuk, Iowa Knoxville LaHarpe Lincolii Martinsville . . Martinton . . . . Minonk Monmouth . . . Pana Paris Peoria Philo Pontiac Rantoul Rushville Springfield . . . 15 70 69 91 90 16 67 67 88 95 15 69 74 89 92 17 72 72 91 90 16 69 69 86 90 15 70 64 88 90 15 69 68 88 98 20 73 69 92 92 17 1 1 69 91 90 15 68 68 91 89 14 71 73 89 90 37 72 70 ?,^ 89 16 65 62 84 93 14 70 65 87 88 20 70 68 83 93 16 71 67 86 89 18 68 66 85 90 13 64 63 85 90 15 64 67 88 91 19 70 72 83 90 17 69 71 88 92 53 67 70 87 92 21 67 70 86 90 6 65 60 84 84 17 66 66 87 91 17 69 72 90 95 29 71 72 91 88 108 111 111 106 111 109 110 108 109 109 108 108 108 112 109 106 106 107 107 107 106 104 99 106 108 107 236 Sectiox 65 — Cextral Illixois. Mean Belative Humidity. Stations. ^ ^ i < 1 Hs 1 i 1 i 83 80 76 79 79 79 82 83 81 80 83 71 58 56 59 58 58 58 62 53 64 72 80 78 76 74 78 77 80 81 80 80 80 76 69 62 64 66 60 63 65 63 69 76 85 84 77 78 79 84 85 86 82 82 &5 74 70 57 66 62 63 66 65 62 68 78 81 80 74 76 77 76 80 81 79 78 80 73 69 60 62 62 58 61 63 59 67 "i Hannibal Mo., 8 A.M. Hannibal, Mo., 8P.M. Keokuk, Iowa, 8A.M. Keokuk, Iowa, 8 P. M . Peoria, 8 A. M Peoria, 8 P. M Springfield, 8 A. M Springfield, 8 P. M 17 82 4 70 37 81 77 • 4 86 3 78 20 82 20 74 Average Hourly Wind Movement (in Miles). Stations. "So o 1 i 03 < >. ^ S i 5 8 > 1 i a Hannibal, Mo Keokuk Iowa . .............. 17 21 4 29 9.8 8.0 10.0 10.1 10.3 8.5 10.7 10.6 11.2 9.3 10.9 11.0 10.9 9.4 10.8 10.7 9.4 7.5 9.5 8.1 8.3 6.4 7.9 7.4 7.5 6.1 5.9 6.6 6.9 5.9 5.8 6.5 8.1 6.8 6.4 7.7 8.8 7.1 8.1 8.6 9.6 8 ll 9.2 7 ft 8 6i 9 ll 8 6 Snrino'field 9 7] 9 91 8 Q Sectiox 65 — Central Illinois. Frost Data. Stations. Length record- Years. Average date of first killing frost in autumn. Average date of last kUling frost in spring. Earliest date of killing frost in autumn. Latest date of killing frost in spring. Ale.xander Bloomington. Bushnell Carlinville Charleston Goaf sburg Decatur ririgpsville ... Hannibal Mo. Havana Hillsboro Kf'okiik, Iowa Knoxville LaHarpe Linoolii Martinsville. . Martinton Minonk .Monmouth . . . Pana Paris Peoria Philo Pontiac Hantoul Rushville . . . . Springfield . . . 15 Oct. 6 16 Oct. 9 14 Oct. 14 17 Oct. 11 16 Oct. 6 13 Oct. 14 15 Oct. 12 19 Oct. 17 17 Oct. 16 15 Oct. 14 14 Oct. 15 37 Oct. 15 14 Oct. 13 14 Oct. 5 16 Oct. 10 16 Oct. 11 17 Sept. 30 13 Oct. 8 15 Oct. 10 13 Oct. 16 16 Oct. 19 63 Oct. 18 21 Sept. 30 6 Oct. 14 17 Oct. 7 17 Oct. 12 29 Oct. 17 Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. .\pr. Apr. Apr. Apr. May Apr. Apr. Apr. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Oct. Sept. Sept. 181 Sept. iMay May May May- May May May May May May May 14 May May May May May May May May May May May May May May May Mav 237 Section 66 — PRECiriTAXiox ix Southern Illinois. Albion, Edwards County, III. — Elevation, 531 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 51S.56 2.30 4.52 7.44 4.60 0.65 1.13 3.74 4.02 0.G6 * 5.60 5.33 * 1.05 1.70 5.28 5.91 5.04 * 5.42 2.21 * 2.93 4.37 8.33 2.78 4.09 * 2.08 3.18 * 1.87 6.83 5.66 2.64 5.51 * 3.78 7.35 * 6.93 3.24 5.08 4.14 4.86 5.75 1.45 1.62 0.86 1.37 2.19 3.62 6.11 * 3.20 1.52 * 1.07 1.19 4.08 0.93 1.45 * 0.79 2.92 * 3.64 5.29 3.28 4.17 2.95 3.24 6.00 4.33 §1857 |l8o8...' 3.47 2.26 51.00 §1859 §1860 41.00 im'.V.'.V." 1888 * 1S93 0.50 1.04 * 4.41 1.40 * 3.96 .00 » * to. 40 10.62 * * 3.55 7.10 * * 3.60 t4.01 * 0.85 4.01 2.81 0.46 4.60 1.47 2.74 1.79 5.70 4.99 2.01 3.28 3.56 4.45 5.20 1.15 3.33 « 37.94 48.68 * 1S94 1895 1896 1897........ 1898 1899 2.59 4.25 0.73 3.73 6.0O 4.42 1.80 1.31 2.00 2.40 4.47 2.70 5.44 8.65 2.56 3.17 3.35 0.15 1.30 4.08 1.91 2.89 4.24 2.34 0.86 4.59 2.71 1.63 2.44 0.71 6.55 2.83 2.43 1.45 4.81 10.19 12.39 4.58 2.30 4.00 2.86 4.26 12.06 2.76 5.35 4.74 4.99 4.56 3.09 2.09 1.23 7.47 5.27 1.19 1.55 3.10 1.85 3.18 2.82 4.21 1.61 3.51 5.38 3.37 5.32 1.87 13.21 2.62 6.68 3.66 5.20 1.60 4.15 J2.05 3.06 4.29 2.00 4.12 7.60 4.33 0.46 4.67 6.13 4.34 3.35 6.55 7. SI 3.84 4.98 3.05 3.57 1.83 1.99 4.81 0.99 4.18 2.12 6.21 4.89 4.82 5.51 4.24 4.19 3.. 31 2.33 4.19 1.80 5.88 2.00 3.92 2.59 3.97 3.75 2.20 2.. 54 1.05 3.42 2.10 1.36 2.11 3.02 4.92 2.23 2.05 3.92 6.98 1.83 3.24 2.14 2.95 5.68 0.74 3.57 2.72 4.91 1.99 3.03 1.28 5.86 2.37 4.85 0.32 1.71 2.82 2.35 0.96 2.0.5- 0.63 3.25 3.15 2.28 2.87 0.93 4.55 0.45 6.06 2.14 2.21 T 2.10 T 5.45 3.35 6.32 2.27 3.12 3.85 1.72 4.92 1.41 0.60 2.62 5.45 4.02 3.59 3.61 31.67 35.09 46.38 50.59 55.09 41 36 1900 1901 1902 1903 1904 41.28 33.89 35.92 37.89 42.91 1905 1906 1907 1908 Means 39.96 41.64 49.19 37.94 41.51 t Values for Fairfield, 16 miles distant. X Value for Mt. Carmel, 16 miles distant. § Values for 1856 to 1S60, for West Salem, 10 miles distant. Section 66 — Precipitation in Southern Illinois. Benton, Franklin County, III. — Elevation, 598 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 0.60 0.80 3.66 2.37 2.79 2.88 1.62 3.30 1.80 0.96 4.89 5.55 1.74 4.31 4.01 3.39 2.53 2.47 1.60 3.13 1.97 2.43 0.98 1.92 2.67 3.34 8.41 4.01 3.16 3.57 5.20 2.21 O.iO 0.26 0.52 2.76 1.03 1.15 2.27 1.65 0.84 2.22 8.65 2.35 1.9f» 2.01 2.77 1.62 4.85 2.70 t6.23 0.70 1.60 2.95 0.47 2.67 7.02 1.90 7.75 3.90 7.05 0.45 2.26 1.82 5.30 10.72 t3.77 7.47 1.00 2.30 4.78 3.71 2.56 8.79 3.29 7.00 4.95 0.72 3.00 2.05 1.00 0.00 3.35 _/1.75 2.93 3.08 4.30 2.99 3.02 3.65 3.47 3.31 2.92 1.41 3.58 3.03 Annual. 1902 1903 1904 1905 1906 , 1907 1908 Means 31.22 30.48 41.86 28.46 42.74 50.63 38.46 37.69 t For Halfway, 15 miles distant 238 Section" 66 — Precipitatiox ix Southerx Illixois. Cairo, Alexander County, III. — Elevation, 359 Feet. Year. Jan. Feb. Mar. I Apr. May. June. July Aug. Sept. Oct. Nov. 1 Dec. Annual. 1871. 1872. 1873. 1874. 187.5. 1876. 1877. 1878. 1879. 1880. 1881 . 1882. 1883. 1884. 1885. 1886. 1887. 1888. 1889. 1890. 1891. 1892. 1893. 1894. 1895. 1896. 1897. 1898. 1899. 19C0. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. 1.44 5.03 3.11 3.21 15.05 1.93 3.05 2.81 4.56 3.56 6.35 2.74 2.32 3.49 3.82 2.15 2.80 4.61 6.32 3.95 2.01 1.26 2.18 3.77 1.45 3.89 6.26 5.46 2.00 1.52 3.42 2.35 4.05 3.41 6.17 7.77 2.84 2.26 6.68 7.38 2.17 2.34 0.25 1.94 2.03 5.01 4.97 10.14 8.52 5.58 1.48 2.54 4.60 2.51 1.57 7.57 3.20 3.32 3.93 4.77 0.39 1.69 3.95 1.18 2.51 3.20 1.78 1.37 4.19 1.70 1.98 1.42 3.58 Means . . 3.84 3.53 2.02 3.27 6.68 6.73 9.84 3.62 2.97 2.95 4.52 1.33 4.22 2.14 4.20 1.08 2.84 2.18 4.91 1.40 6.14 5.86 2.29 2.09 4.14 2.76 3.97 7.50 9.20 3.59 1.29 3.62 2.12 4.28 4.60 2.84 6.07 3.39 3.91 4.52 5.54 7.57 3.01 2.67 3.87 5.61 3.03 3 25 3.62 4.14 5.64 3.65 1.43 6.64 2.09 3.08 0.97 3.76 1.55 5.28 6.91 2.54 2.75 2.57 6.49 2.13 2.33 1.79 2.70 3.36 1.85 2.98 2.19 1.29 3.81 6.63 .00 3.11 5.84 2.13 4.41 2.79 4.64 2.44 10.22 3.85 4.57 3.21 2.98 1.37 3.58 1.91 .4.19 2.48 5.55 6.70 2.79 1.48 10.82 1.12 5.36 5.27 3.98 2.00 2.13 3.52 2.03 4.11 0.46 6.78 4.90 3.60 3.90 4.31 1.79 4.45 2.20 8.41 6.62 4.88 4.61 8.70 2.92 1.81 3.34 6.11 2.95 4.63 4.87 2.34 5.48 8.07 1.45 3.97 3.55 7.59 1.04 4.86 4.73 6.87 1.73 5.74 10.07 0.91 2.47 2.37 3.61 6.00 2.33 2.95 3.15 5.97 3.45 1.68 0.52 9. 88 3.44 5.63 .81 .37 .34 .18 ,25 .95 2 1 4 5 7 7.34 0.82 1.01 1.42 3.32 5.15 1.62 2.21 1.73 1.23 1.92 5.97 2.31 2.76 20 43 3.86 3.92 1.92 3.48 2.22 0.19 2.48 2.79 3.32 5.24 1.58 3.45 7.05 2.61 0.11 3.46 1.73 2.74 2.40 2.84 1.10 5.45 1.10 5.16 4.77 5.23 1.64 1.68 0.71 1.78 0.89 3.56 1.06 0.27 3.83 3.26 0.81 2.59 3.79 5.73 2.43 4.28 2.34 2.56 4.09 3.14 0.16 0.73 3.15 2.99 0.93 4.55 2.74 3.28 0.34 5.02 4-76 2.52 1.67 0.28 3.82 2.29 0.29 0.90 6.83 2.69 1.86 2.95 0.53 6.11 2.25 2.40 2.77 2.4. 3.81 1.16 5.28 1.54 1.76 2.14 3.12 2.59 3.87 6.96 2.74 1.89 2.89 0.45 0.38 3.24 2.81 3.04 0.49 0.74 6.26 1.47 0.50 1.73 0.91 4.64 3.42 1.70 3.40 0.79 1.98 1.20 3.00 0.44 2.90 0.02 2.49 96 36 41 79 73 3.33 4.85 5.56 6.08 7.30 4.20 2.75 1.42 5.27 4.18 5.50 1.55 3.05 4.63 1.77 3.51 2.07 0.15 3.64 7.88 4.43 3.32 3.98 4.25 1.56 4.25 3.81 3.21 0.73 4.55 3.53 6.63 2.22 3.70 2.65 2.18 8.99 3.01 1.74 4.12 2.40 0.77 2.91 3.49 3.91 1.60 3.87 3.25 1.18 3.69 1.27 3.84 2.43 4.02 6.95 3.85 2.98 3.40 6.50 2.48 1.54 3.35 26.52 50.86 47.63 52.93 55.60 39.47 41.76 45.41 49.56 32.13 61.58 52.53 51.66 31.99 37.98 26.75 41.90 37.74 50.. 53 39.56 38.71 48.79 30.51 33.57 39.36 44.10 48.66 42.42 33.07 32.91 32.00 39.48 46.92 45.58 38.47 41.61 239 Section (>(> — ^Precipitatiox i\ Soutiikhx Illinois. Ccniijlc, Clinton Count y. III. — Elevation, JfOO Feci. Year. Jan. Feb Mar. Apr. May. June. July. Aug. Sept, Oct. Nov. Dec. Annual 1885. 1886. 1887. 1888. 18S9. 1890. 1891. 1892. 1893. 1894. 1895. 1890. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. 3.12 1.31 2.54 2.76 8.41 1.45 2.44 to. 84 2.17 2.30 2.39 4.04 3.98 2.79 0.56 0.72 1.07 1.5S 3.10 2.35 3.08 6.51 1.90 1.40 4.46 2.77 1.76 3.86 3.75 3.03 t3.72 2.17 1.06 2.62 2.75 1.76 3.21 2.87 1.81 1.02 3.31 0.71 1.53 1.78 0.94 4.51 2.42 4.51 3.46 1.81 4.56 2.57 1.24 2.73 2.6S 1.97 2.46 10.24 11.93 2.68 1.95 3.85 5.23 3.01 8.69 2.60 4.72 3.56 3.48 3.50 2.09 3.47 1.77 *1.50 5.40 2.62 8.33 10.94 2.20 2.06 1.57 4.45 3.91 1.80 1.32 2.78 2.50 3.64 4.48 6.99 1.71 3.95 5.05 Means. 2.67 2.51 4.02 3.65 3.72 2.35 4.03 3.95 4.93 3.65 3.18 6.81 4.16 3.47 3.85 6.67 2.77 9.55 4.18 6.25 2.38 2.47 3.39 2.41 4.44 1.64 3.81 9.98 4.34 5.29 8.10 2.75 7.59 6.41 3.08 5.30 4.60 5.62 1.44 1.90 3.36 3.. 50 6.48 2.38 8.70 3.47 7.75 2.13 2.73 5.81 2.05 8.27 3.90 4.69 0.62 1.34 2.02 3.61 4.86 0..58 0.73 4.21 3.49 2.06 10.42 6.92 4.23 6.23 3.09 0.27 3.00 0.95 6.92 11.21 0.47 4.36 5.10 4.06 3.78 0.38 7.18 1.09 1.22 2.37 t2.64 0.89 0.84 4.19 3.55 0.21 4.66 2.93 2.65 4.65 1.90 3.76 2.90 6.77 5.48 3.10 0.87 3.43 3.44 0.87 1.09 4.35 4.97 2.46 6.86 0.09 2.87 0.46 5.64 1.09 2.51 1.95 5.95 5.94 5.26 0.89 1.10 3.23 4.39 0.72 1.12 2.47 1.S3 0.60 1.69 1.28 0.51 1.44 0.55 1.93 0.64 4.21 3.70 2.83 2.80 1.36 3.97 0.83 5.79 0.84 2.86 0.50 2.02 2.97 3, 7, 3 5 2 6, 4, 2 0, 3 5. 5, 2, 1 3 2.24 2.86 0.85 0.38 2.09 4.90 2.41 4.15 3.35 3.49 2.67 4.04 2.78 1.48 0.77 1.05 1.36 1.28 2.92 4.53 0.39 2.75 1.80 2.82 1.70 4.21 3.96 2.12 1.20 2.45 2.13 3.70 0.50 2.34 37.38 38.64 42.57 37.18 37.96 31.63 41.26 40.55 27.04 38.93 44.03 41.10 59.82 32.16 27.27 40.17 30.13 21.93 54.13 31.23 45.91 42.07 39.48 ♦Interpolated from surrounding stations, t Values for Greenville, 19 miles distant. Section 66 — Precipitation in Southern Illinois. Cohden, Union County, III. — Ele^vation, 656 Feet. Year. I Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. I Annual tl875. 1876. 1877. 1878. 1879. 1880. 1881. 1882. 1883. 1884. 188,5. 1886. * tl895; 1896. 1897. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. 0.95 13.25 1.80 3.16 Means 3.64 J1.51 4.47 4.20 5.76 1.70 1.34 1.52 2.26 4.05 3.45 6.45 5.82 3.86 2.71 2.48 0.70 1.86 2.10 5.38 5.34 8.17 8.19 5.38 1.23 2.33 5.88 8.82 3.87 2.28 2.39 4.20 1.99 4.52 3.93 4.05 1.43 4.05 1 .55 4.47 1.37 3.52 4.09 2.45 2. 53 4.76 2.90 2.10 2.36 1.56 8.06 3.72 12.64 14.16 4.04 2.28 5.73 4.22 5.87 6.75 3 03 6.70 2.95 4.60 3.50 4.96 .31 .28 .17 .70 .74 .04 3.54 4.28 4.83 1.17 3.11 8.10 4.05 7.98 5.01 4.45 5.73 2.65 7.27 2.57 9.77 6.64 4.99 2.24 3.71 * 2.10 9.30 2.00 5.76 6.06 6.57 1.69 3.13 3.16 2.. 54 4.34 0.67 5.44 5.16 4.65 11 7.12 3.91 7.02 4.82 5.35 3.04 8.21 7.44 6.89 3.84 5 4 4 9 2 2.78 2.25 5.84 2.10 4.77 2.77 1.70 11.09 4.46 1.64 2.82 4.46 3.78 0.00 3.09 2.86 5.49 2.19 1.16 6.52 3.76 2.99 7.35 4.23 4.52 1.20 0.82 3.22 2.83 9.55 3.80 4.18 3.37 2.01 9.41 3.47 3.66 12.51 2.20 0.38 4.19 4.02 2.65 4.13 2.63 * 2.41 2.24 2.05 4.81 1.42 0.51 5.96 4.45 1.85 4.73 2.8.5 5.07 5.41 3.75 5.16 3.90 3.80 0.38 3.14 5.95 2.35 1.40 3.48 1.91 3.47 0.51 3.33 4.54 4.33 2.38 1.06 5.21 2.44 2.55 0.77 3.42 1.31 9.11 2.94 8.72 0.79 1.92 3.10 2.09 1.40 5.33 4.25 5.75 4.54 6.51 2.06 7.21 1.42 3.43 0.74 5.25 2.02 4.58 3.08 4.93 4.28 6.10 6.04 6.85 2.54 l.SO 6.65 1.51 0.78 4.78 4.88 5.59 3.29 2.17 2.97 5.14 9.57 2.92 3.25 2.32 0.77 6.42 4.65 2.20 1.97 0.84 3.59 0.90 6.46 1.67 4.22 0.00 3.23 3.75 5.13 1.60 1.91 4.00 1.28 4.92 2.22 0.32 2.24 7.75 5.17 4.90 4.37 0.89 5.15 1.69 4.17 2.90 5.68 6.36 2.82 2.55 3.50 5.50 3.10 1.07 51.05 63.01 48.44 43.64 51 .98 52.49 37.40 55.80 61.56 52.67 38.13 39.32 39.81 53.71 64.68 46.63 43.54 34.38 38.03 36.85 46.80 47.39 54.63 44.52 46.49 48.05 t Values for 1875 to 1886, inclusive, and the year 1895 are for Anna; values 1896 to 1908, inclusive, are for Cobden. The stations are five miles apart. t Interpolated from surrounding stations. 240 Section G6 — Precipitatiox ix Southern Illinois. Equality, Gallatin County, III. — Elevation, . . . Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 5.79 3.12 5.35 3.09 3 86 3.53 10,04 1.80 3.14 4.25 2.32 2.83 2.41 4.22 2.43 1.87 3.89 9.93 2.07 1.15 2.81 1.50 4.07 2.12 0.6.5 1.76 3.26 3.06 1.65 3.02 2.11 3.39 0.85 4.74 1.54 3.53 2.55 1.03 3.09 3.09 2.71 1.84 1.69 3.39 3.74 1.06 4.91 5.17 2.67 4.44 7.27 3.53 2.60 2.40 1.83 1.62 0.6a 2.17 1 29 2.74 4.39 3.49 7.80 4.09 3.33 3.95 3.69 2.70 8,85 2.05 0.39 2.66 2.77 1.70 3.05 3.38 4.91 2.21 9.40 3.78 1.88 7.72 2.82 3.30 7.60 1.99 6.88 2.16 1.48 2.88 3.93 6.33 5.06 1.56 7.75 7.52 10.90 1.35 4.13 3.25 6.47 5.53 1.96 8.07 1.67 3.88 4.96 3.73 2.85 6.58 5.21 5.85 6.20 2.45 4.34 3.81 0.44 0.05 2.69 1.30 4.26 2.97 4.85 3.34 3.71 3.77 4.11 3.60 2.90 2.90 3.27 3.49 1899 1900 1901 1902 1903 1904 •- 1905 1906 1907 1908 ^f eans . . 49.12 38.47 29.56 34.27 33.16 47.39 46.92 55.14 55.90 41.77 43.17 Section 66 — Precipitation in Southern Illinois. Fairfield, Wayne Comity, III. — Elevation, 495 Feet. Year. Jan. Feb. Mar. Apr, May. June. July .•Vug. Sept. Oct Nov. Dec. 2.55 3.00 6.50 2.58 4.87 3.96 1.99 4.01 t5,30 12.00 * * 3.97 3.64 3.98 0.43 6.46 3.90 2.39 1.64 1.72 2.14 3.45 1.64 1.31 4.84 3.18 4.11 0.81 2.67 0.70 2.63 1.84 3.40 4.50 4.14 3.61 2.96 3.21 1.02 3.28 2.88 Annual. 1885. 1886. 1887. 1888. 1889. * 1895^ 1896. 1897. 1898. 1899. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. Means. 2.87 2.06 3.70 2.65 1.37 1.65 3.96 2.00 1.25 0.35 2.45 5.93 3.49 2.21 1.15 3.82 5.06 3.54 1 1 1 3 1 3 7.39 t2.56 1.69 3.70 1.20 2.55 2.94 1.91 1.00 3.19 2.15 1.27 1.90 0.30 t6.55 2.88 12.00 11.99 2.76 2.18 3.64 3.65 3.34 9.72 2.75 3.39 3.34 t4.99 2.25 4. .50 2.17 3.28 4.63 1.04 tl.lO 3.36 2.55 5.33 2.18 4.40 1.24 5.51 5.01 1.68 1.17 2.83 1.78 3.54 2.86 3.98 2.28 3.33 5.30 2.93 6.81 2.18 6.69 3.91 4.24 1.82 2.97 3.37 3.90 2.87 0.70 5.40 8.02 3.93 4.20 1.20 1.73 0.12 5.75 8.29 4.47 5.05 2.66 9.07 1.81 4.55 2.07 2.78 3.89 3.45 5.74 1 21 3.95 1.70 0.65 2.49 1.93 4.72 4 51 6.00 6.93 5.05 5.08 3.82 1.58 1.83 4.41 4.90 5.06 2.45 4.76 2.59 3.71 2.00 2.57 0.40 5.91 1.75 1.78 1.36 0.43 4.91 2.48 1.75 2.61 3.29 7.12 6.83 3.99 3.68 5.58 2.61 3.21 7.16 2.86 3.85 0.44 5.49 * 2.86 6.64 0.87 4.35 0.77 3.94 1.84 1.55 1.34 6.04' 2.31 5.43 1.03 0.35 2.97 2.24 0.24 0.70 1.08 12.00 2.43 0.66 3.30 5.26 1.63 3.09 0.76 2.14 0.34 6.93 2.95 2.32 0.00 2.12 32.40 39.91 27.89 38.62 42.90 50.93 56.64 34.55 36.76 28.31 30.15 35.68 45.89 40.28 38.86 45.76 38.41 38.61 Values l* 42.19 36.23 1906 40 90 1907 1908 37.42 34.47 Moans 35.75 243 Section 66— Precipitatiox in Southern Illinois. Greenville, Bond County, III. — Elevation, 635 Feet. Year. Jan. Feb. Mar. Apr. May. June July. Au^. Sept, Oct. Nov. Dec. Annual. 1882. 1883. 1884. 1885. 1886. 1887. 1888. 1889. 1890. 1891. 1892. 1893. 1894. 1895. 1896- 1897. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. Means . 1.00 2.10 2.80 4.20 4.50 8.90 1.87 1.85 3.22 0.03 4.17 5.05 4.16 5.90 6.00 2.68 2.65 9.61 1.50 2.62 0.84 2.45 1.93 3.54 4.97 3.97 2.48 1.41 1.40 0.61 1.29 4.25 1.95 4.50 6.18 1.46 2.90 2.75 2.04 4.50 3.04 4.41 3.72 2.45 0.79 3.32 3.25 4.23 2.00 4.86 2.02 1.37 3.48 1.10 1.73 3.07 0.75 5.68 3.64 1.81 4.21 3.16 2.37 3.54 3.53 2.66 2.37 7.50 9.73 3.38 2.09 3.32 4.19 3.34 11.43 2.14 5.35 2.55 3.93 3.11 3 2.28 1.70 4.62 2.24 7.91 11.86 3.52 3.19 2.26 3.90 3.58 1.82 2.27 2.87 2.69 4.07 4.19 3.91 2.72 2.73 5.35 4.03 2.96 6.25 7.89 5.19 6.40 5.00 7.10 2.58 2.63 7.79 5.61 3.31 3.16 7.28 0.91 6.51 5.47 7.63 1.96 2.63 1.71 3.52 5.07 3.04 4.03 8.73 9.45 4.21 8.15 5.06 8.45 2.97 6.52 4.43 2.49 5.91 5.37 5.16 1.51 2.64 5.03 3.37 4.28 2.58 8.39 2.21 8.15 2.41 5.33 4.26 3.65 6.20 5.29 4.94 3.68 7.50 6.82 3.97 1.90 2.21 6.06 3.45 1.17 0.93 3.10 1.68 2.69 6.97 2.26 5.69 4.37 1.89 2.51 1.69 2.02 2.29 5.12 4.46 1.37 5.27 4.94 3.56 3.52 4.16 4.92 4.03 1.31 3.92 0.58 2.60 "4.37 2.64 0.19 2.31 2.05 1.50 1.36 2.61 4.73 0.51 4.40 4.41 2.84 5.98 3.44 2.03 5.97 2.25 3.02 0.03 6.14 6.86 7.24 4.09 1.47 4.24 2.89 0.41 2.08 3.73 4.74 3.02 5.82 0.18 3.80 0.84 4.27 1.17 2.43 1.84 5.04 3.47 5.52 0.79 0.55 3.18 9.52 5.00 5.42 0.37 1.39 ,2.62 2.50 1.00 1.57 1.53 0.49 0.78 0.77 2.80 0.59 5.58 2.98 2.04 2.35 3.24 2.51 1.31 6.17 1.48 3.28 0.02 2.59 6.62 2.38 2.95 2.80 6.38 .4.59 5.30 2.06 6.29 4.26 1.90 1.89 4.56 5.36 7.19 2.26 2.13 4.05 1.25 3.41 1.10 0.20 1.95 4.25 1.82 2.72 3.41 2.46 7.62 3.45 3.30 4.68 3.00 1.57 1.64 1.52 2.28 2.40 2.73 5.45 0.82 3.96 1.47 3.90 1.20 3.68 3.92 1.80 1.84 2.08 2.61 3.63 0.97 2.85 54.32 66.54 48.42 50.71 44.53 37.37 39.37 33.57 46.36 41.12 31.92 37.19 42.36 42.87 52.39 34.20 41.23 28.32 39.07 28.68 49.31 40.63 39.59 43.20 41.89 42.26 Section 66 — Precipitation in Southern Illinois. Ilalficay, Williamson County, III. — Elevation, 569 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. NoA^ Dec. Annual. 1887 1.47 * 6.91 * 2.96 * * * * * 4.45 2.10 4.75 3.95 5.45 2.73 2.97 8.65 1.75 2.87 2.78 2.47 2.23 4.12 6.65 * 1.50 0.50 3.75 2.20 2.66 2.19 4.46 2.99 0.50 1.57 2.78 4.82 5.00 3.76 3.77 * 1.95 1.75 2.60 0.50 * 3.00 3.75 2.00 2.60 * * * ♦ 1893 1894 2.00 3.35 1.00 2.83 1.30 0.65 2.00 2.86 3.40 1.20 4.55 11.43 1.60 1.80 2.35 6.34 3.35 1.55 5.00 2.58 3.75 0.20 2.00 1.15 0.90 6.61 1.91 2.60 5.70 0.46 2.92 27 00 1895 34 16 1896 28 52 1897 1898 1899 4.46 1.71 1.37 1.87 2.03 3.60 2.75 6.18 8.26 2.46 4.02 1.45 0.74 4.65 3.94 1.46 2.24 1.10 5.16 2.99 1.89 1.91 3 36 5! Sfi 3.18 3.09 2.30 3.63 3.06 3.18 3.25 2.21 4.58 1.00 0.68 3.60 3.58 1.46 2.80 3.03 2.71 1.64 2.54 1.61 5.55 4.49 0.73 2.77 0.78 3.19 0.83 2.07 3.40 1.30 4.12 0.96 0.53 2.13 6.40 2.55 1.92 5.21 4.75 2.19 2.81 3.19 6.60 38 82 1900 33 70 1901 - ... 28 11 1902 1903 3.16 4.03 5.97 2.43 6.23 2.92 2.57 2.75 4.50 3.59 1.52 3.22 32.18 31 49 1004 41 00 1905 1906 3.79 6.98 6.79 0.79 1.35 51 19 1907 1908 Means 3.06 2..5 4.18 2.92 3.15 3.86 2.83 2.56 3.00 1.93 2.67 3.41 36.12 Values for 1887 and 1893—1897, inclusive, for Herrin; values for 1898 to 1907, inclusive, for Halfway. These stations are 11 miles apart. 244 Section 66 — Peecipitatiox in Southerx Illinois. McLeansboro, Hamilton County, III. — Elevation, Jf62 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. j Sept. Oct. Nov. Pec. Annual. 1882 2.99 2.30 2.15 4.20 3.51 0.98 2.81 3.20 7.12 *3.30 1.43 1.12 2.35 4.97 8.27 3.87 1.10 2.75 3.94 1.57 2.36 5.23 *4.50 3.44 3.55 2.88 3.22 3.32 2.55 0.89 4.10 3.10 4.77 1.95 5.94 2.08 0.93 3.25 3.01 2.86 3.19 2.96 2.22 4.14 3.43 1.48 0.88 4.03 *2,50 7.50 6.02 3.38 2.22 2.00 7.27 5.38 1.95 2.08 2.73 2.18 3.75 3.93 4.25 1.46 2.16 7.10 3.45 6.27 3.93 5.20 9.13 2.80 5.27 2.51 4.83 4.92 ; 3.82 3.35 i 3.45 2.79 1 5.83 3.06 3.14 1.78 1.74 1.28 3.05 2.18 4.31 5.53 1.29 1.85 1.89 0.98 7.11 4.38 3.43 3.57 5.16 4.45 2.87 2.21 1.31 5.48 7.39 1.92 1.62 2.83 3.10 7.85 2.54 2.70 3.67 2.61 0.19 7.76 3.02 7.05 8.51 3.97 3.99 0.00 3.80 6.02 2.50 1.45 1.06 4.33 4.69 0.78 2.82 9.28 1.92 3.66 0.70 0.77 2.28 1.52 1.13 0.55 2.11 2.35 2.77 6.64 1.88 2.56 6.69 3.08 4.88 5.74 '5'26" 4.25 2.48 2.60 3.50 8.24 3.50 2.69 3.29 2.47 1.77 1.38 2.35 0.98 1.51 47.33 18S3 56.51 1884 39.92 1885 36.90 1886 39.71 1887 30.08 1888 39.88 18b9 1890 2.80 4.10 1.92 6.92 5.96 5.33 1.99 7.06 2.53 6.05 3.82 5.34 1.06 3.30 3.38 3.32 3.49 0.50 3.61 6.60 3.96 2.10 3.59 2.30 4.54 1.12 7.62 4.55 5.52 4.99 4.91 6.13 2.39 2.68 4.09 4.67 1.81 2.89 2.89 0.65 4.07 1S9I 36.57 1S92 1893 2.12 1 2.44 37.23 1895 2.03 1.29- 1.70 5.15 3.14 0.63 2.65 2.71 3.90 2.12 3.30 4.35 5. SO 2.17 3.57 3.00 3.91 0.63 2.75 2.02 3.07 0.94 2.44 1.71 10.11 3.03 5.43 1.03 0.41 2.86 0.57 1.73 0.45 3.77 4.03 1.53 2.33 0.85 2.96 0.40 4.01 1.76 1.96 T 2.13 5.57 2.39 5.85 1.26 2.46 3.97 1.36 3.65 0.98 0.94 2.66 5.32 3.83 3.23 3.59 2.85 0.70 5.12 1.69 2.36 1.25 5.20 5.27 2.20 3.17 3.46 6.01 4.12 1.33 3.04 1896 1.47 4.23 4.98 4.96 1.24 1.41 1.93 2.21 3.78 2.61 6.20 7.72 2.35 3.18 2.24 4.00 1.29 2.61 3.52 2.10 0.96 4.86 3.49 1.55 2.74 0.91 7.55 3.32 4.51 11.29 11.11 4.33 3.83 3.72 8.89 2.61 5.38 2.97 •4.45 4.24 36.23 1897 52.02 189S 61.99 1899 . ... 41.75 1900 1901 28.83 1902 32.01 1903 35.07 1904 50.30 1905 40.17 1906 43.96 1907 .38.62 1908 Means 38.67 40.51 1 'Interpolated from surrounding stations. 245 Section 6G — Precipitatiox ix Southern Illinois. Mascouiali, St. Clair County, III. — Elevation, 1^26 Feet. Year. 1882. 1883. 1881. 1885. 1886. 1887. 1888. 1889. 1890. 1891. 1892. 1893. 1894. 1895. 1S9S. 1900. 1901. 1902. 1903. ■1904. 1905. 1906. 1907. 1908. Jan. 3.50 1.55 1.42 1.10 3.51 1.58 2.70 2.66 10.00 1.65 2.70 0.74 1.17 3.36 1.54 4.71 4.03 2.70 0.40 1.61 1.36 1.76 3.15 3.37 4.28 1.84 2.63 Feb. Mar. 7.25 12.25 6.70 0.71 2.59 70 18 00 43 21 1.76 2.41 3.69 2.89 3.45 3.99 2.55 0.83 4.74 1.71 1.84 3.35 5.44 3.70 5.00 3.00 5.60 0.44 3.81 4.80 3.80 0.80 4.62 3.07 2.45 3.50 2.40 2.19 2.89 9.91 11.33 2.88 4.09 Apr. May. 2.65 3.25 5.30 6.30 6.80 3.40 1.50 2.20 8.20 2.50 9.20 10.20 3.50 1.60 2.30 3.64 4.21 1.96 1.80 2.81 2.70 3.54 4.11 5.69 2.00 3.85 5.91 4.12 4.75 6.20 7.70 2.30 5.90 3.80 4.80 4.90 2.80 2.60 7.70 4.20 4.40 3.20 9.70 2.27 6.84 5.56 5.50 4.19 3.15 2.12 3.25 4.66 1.50 8.19 10.67 4.92 June. July 5.81 6.70 5.50 8.10 4.90 1 .50 8.70 5.00 3.20 5.30 6.20 2.80 1 70 2.10 5.20 4.b3 5.62 3.59 5.17 3.10 5.00 3.92 6.90 1.64 3.04 3.33 4.54 5.12 5.60 1.40 5.00 1.20 3.50 1.30 6.40 0.30 0.70 3.50 2.50 2.00 4.80 3.80 3.27 4.84 1.94 2.65 0.76 59 83 06 07 90 61 4.73 3.24 Aug. Sept. 2.. 37 3.20 1.60 4.20 2.90 1.20 5.60 1.30 1.90 7.40 1.10 1.30 1.50 1.70 1.40 0.14 2.12 1.47 0.73 4.40 3.30 7.50 1.77 2.33 4.50 2.70 2.79 4.25 3.80 7.10 6.90 2.70 1.40 4.20 5.30 1.90 1.40 5.70 4.50 1.90 5.80 1.00 3.80 0.65 3.32 1.80 2.52 2.83 4.25 6.66 5.12 1.74 0.81 Oct. 3.66 7.60 1.60 6.60 0.70 1.50 3.30 2.40 to. 85 1.30 1.40 3.00 0.80 0.50 1.90 6.40 4.42 3.36 1.99 2.76 1.55 3.45 0.88 6.14 1.85 2.82 0.11 Nov. Dec. 5.74 3.50 3.40 3.10 4.92 5.50 t3.20 4.80 2.60 6.40 3.60 1.60 0.40 3.75 4.20 4.68 2.43 3.50 3.84 1.44 3.52 1.58 0.70 2.90 2.76 3.28 3.51 2.48 3.36 2.51 2.37 2.10 6.90 3.74 2.50 4.20 t2.03 1.60 1.30 1.40 1 .55 0.60 3.63 5.75 0.10 2.73 1.48 3.41 1.44 3.. 53 3.75 1.44 1.52 2.23 3.46 0.J61 Annual. 52.47 "56I92 48.69 46.63 38.38 41.43 41.05 45.77 37.40 43.80 38.57 28.21 32.61 41.24 41.17 57.46 35.11 34.97 28.38 36.16 34.85 46.80 45.86 43.25 41.89 * Interpolated from surrounding stations, t For Collinsville, 16 miles distant. 246 Section 6G — Precipitatiox ix Soutiierx Illixois. Mt. Carmel, Wahasli County, III. — Elevation, Jf2Jf Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dee. Annual. 1876 9.35 * 2.71 * 5.04 * 3.33 * 1-.79 * 6.24 1.68 2.05 2.38 1.69 4.14 3.19 3.60 4.77 1.57 2.93 1.41 1.19 5.77 3.96 3.10 3.57 3.47 4.17 0.32 1.65 3.46 4.46 7.48 2.96 3.42 1.96 3.09 3.81 * 1.29 5.16 4.14 1.61 7.15 2.13 6.14 2.11 4.11 1.44 2.61 1.91 2.52 0.59 3.28 1.39 1.09 1.46 2.66 2.71 4.15 3.o4 5.82 6.88 1.00 3.10 2.63 * 5.62 8.57 2.22 2.91 0.62 3.84 4.66 1.22 1.80 3.43 2.34 2.96 4.15 0.60 3.64 2.03 3.63 2.14 3.17 1.38 5.68 1.26 5.66 0.64 2.04 3.03 1.74 * 2.51 2.96 0.47 0.91 2 71 2.29 2.35 0.48 1.28 3.18 2.14 0.42 2.04 0.58 3.53 4.89 1.61 4.43 1.83 3.96 0.60 7.14 4.42 2.02 0.10 2.33 2.10 * 1.97 4.28 5.84 4.42 4.69 7.11 5.26 5.48 4.26 2.62 0.44 5.75 3.34 6.69 2.54 1.82 4.32 1.74 5.00 0:64 3.00 7.60 4.72 2.70 3.85 1.95 * 7.59 2.20 2.61 2.80 2.15 2.82 1.73 3.25 1.25 2.02 4.48 3.. 55 0.41 4.88 2.21 3.33 2.09 6.07 5.82 3.44 3.66 3.32 6.04 4.92 2.03 3.33 42.37 * * 1S84 1886 3.81 4.23 0.87 3.46 3.24 8.77 2.83 2.40 2.61 2.70 5.84 0.94 4.52 6.53 4.93 2.01 1.63 2.37 3.58 4.82 3.28 5.85 9.39 1.44 4.06 1.48 1.90 4.. 53 1.66 1.76 7.41 6.04 4.58 4.81 4.80 0.50 2.40 4.10 1.79 4.01 4.41 1.70 1.10 5.46 3.50 2.28 2.52 1.28 8.86 3.42 0.95 2.30 3.96 0.94 1.47 8.27 4.70 2.41 4.00 3.87 2.61 5.49 10.22 11.35 5.16 2.13 5.20 2.99 4.44 12.84 3.14 6.50 4.50 4.62 4.96 2.71 3.67 4.52 1.99 2.04 3.65 2.05 6.40 7.93 3.18 3.14 2.25 6.20 4.42 1.15 1.11 3.34 2.07 5.82 2.64 4.82 2.16 3.48 5.96 3.60 2.85 2.89 4.29 2.50 5.60 3.19 3.19 4.94 4.56 5.29 2.43 9.23 3.14 5.82 3.35 4.09 1.84 2.52 2.05 1.32 4.82 0.82 3.80 6.22 3.70 4.38 3.09 0.75 3.81 4.72 3.02 3.53 3.85 5.84 2.10 1.83 4.69 3.15 8.16 5.65 7.91 4.44 4.98 6.22 3.05 2.39 3.58 3.64 1.16 4.09 41.73 1886 35.05 1887 35.71 1S88 1889 39.87 40.62 1890 59.22 1891 36.45 1892 40.21 1893 43.85 1894 35.14 1895 .36.71 1896 41.42 1897 47.77 1898 56.84 1899 41.18 1900 38.57 1901 34.31 1902 36.16 1903 44.41 1904 1905 47.36 46.47 1906 53.93 1907 48.69 1908 38.09 Means 42.56 Sectiox 6G — Precipitation in Southern Illinois. Mt. Vernon, Jefferson County, III. — Elevation, oil Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 2.21 7.64 1.30 5.86 4.19 5.37 1.23 5.14 2.54 5. 50 3.55 1.68 4.39 6.23 1.94 3.37 7.49 5.28 1.94 8.35 2.32 5.35 4.89 5.17 2.14 2.75 5.50 1.41 5.94 6.30 3.00 6.43 4.98 3.72 0.69 2.81 0.94 5.66 7.97 1.07 3.9S 3.87 3.15 3.06 0.77 3.18 2.40 1.81 3.29 2.8.5 2.87 3.99 2.75 2.27 6.61 1.83 3.13 6.19 0.41 4.54 0.90 4.07 1.53 3.26 1.94 4.22 4.24 6.50 0.97 0.92 0.27 1.86 0.56 4.41 3.95 1.56 2.25 0.2S 3.20 0.56 5.87 1.87 3.49 T 4.66 3.10 4.00 2.14 1.30 3.49 1.79 4.47 0.84 0.81 2.52 6.90 3.64 2.33 3.80 0.29 1.89 2.12 2.19 1.67 4.05 4.91 2.68 3.10 3.89 3.18 3.50 1.01 1896 1.77 3.. 57 5.86 3.26 1.08 1.37 1.45 1.66 3. 33 2.42 3.74 8.15 2.16 1 .95 3.39 1.80 3.38 2.94 2.. 54 0.92 3.37 2.. 58 1 .44 2.78 1.00 6.63 4.05 10.18 11.94 2.90 1.43 3.79 3.92 3.15 10.01 3.18 5. 58 3,38 5.42 1.67 4.47 3.. 54 2.27 1.48 2.51 1.42 3.66 3.79 4.92 1..58 3.22 6.18 41 .25 1897 189H 1899 41.03 56.90 33.66- 1900 36.97 1901 27.36 v.m 1 <)()3 36.78 31.74 1904 v.m 1906 48.72 44.89 39.90 1907 1908 47. S3 37.99 38.28 2.73 Means . - - 3.06 2.66 5.30 3.13 4.06 4.14 4.10 2.92 3.05 2.15 2.99 40.29 247 Section GG — Pkecipitatiox ix South i:kx Illixois. New Burnside, Johnson County, III. — Elevation, 556 Feet. Year. Jan Feb. Mar. Apr. May. June. iJuly. Aug. Sept. Oct. Nov. Dec. Annual. 1895 2.65 2.86 10.97 8.51 4.91 1.89 3.72 3.08 6.21 7.48 2.72 6.68 3.77 3.18 4.90 2.20 3.36 5.82 3.76 4.04 2.08 3.63 3.49 2.76 5.06 5.25 1.32 2.84 6.52 3.72 1.98 9.44 1.10 7.28 5.37 3.90 1.63 3.20 3.06 3.11 5.59 1.66 4.85 5.31 4.11 2.24 5.90 4.15 2.77 2.22 9.08 1.34 3.40 3.13 3.83 2.31 3.11 5.26 1.94 3.62 5.51 4.90 5.81 5.82 4.72 3.43 0.33 2.04 1.43 5.24 10.39 4.76 4.72 3.74 4.49 1.26 2.54 0.81 3.28 1.42 0.77 2.81 4.33 2.13 2.33 3.00 4.88 5.. 56 3.13 2.73 2.S. 2.54 1.18 4.33 1.53 2.36 1.00 5.07 0.89 5.31 2.96 5.43 1.28 1.3] 2.71 0.60 1.74 1.20 4.35 5.18 2.74 3.92 *0.78 3.35 1.74 6.44 0.86 3.10 T 2.57 7.03 3.14 4.07 0.99 1..S6 3.99 1.70 5.71 1.06 0.51 2.74 8.33 4.30 4.S5 3.59 2.05 0.68 2.71 2.24 3.78 1.61 4.85 6.03 3 19 3.20 3.. 58 8.31 3.16 0.62 3.29 1896 1.33 2.70 4.67 5.36 1.84 1.01 2.89 1.01 4.49 2.61 6.65 9.97 2.84 3.64 1.20 3.35 1.07 2.63 3.36 2.14 0.77 4.90 2.92 1.72 2.54 2.11 7.67 2.80 39.63 1897 43 87 1898 49.07 1899 43 02 1900 37.05 1901 28 08 1902 40.79 1903 33 12 1904 45 22 1905 49.31 1906 54 53 1907 .50.92 1908 41 11 Means 42.17 * Value for Halfway, 15 miles distant. Section Q>Q — Pkecipitation in Southern Illinois. Olney, Richland County, III. — Elevation, Jf86 Feet. Year. Jan. Feb. Mar. Apr. May June. July. Aug. Sept Oct. Nov. Dec. Annual. 1887 1888 1889.... 1890.... 1891.... 1892 1893.... 1894.... 1895.... 1896.... 1897.... 1898.... 1899 1900.... 1901.... 1902.... 1903.-.. 1904.... 1905...- 1906.... 1907.... 1908.... Means 1.16 1.93 2.73 7.21 2.06 1.35 0.64 2.27 4.25 0.89 3.77 5.22 3.98 0.93 1.00 1.41 2.94 4.00 2.89 3.37 7.53 1.98 1.57 2.66 4.48 5.48 15 ,73 ,19 ,45 ,21 ,92 93 ,81 4 3 3 2 2 I 2 2 2 0.69 4.02 2.05 1.29 2.33 0.52 5.17 88 6.00 5.25 1.91 6.52 4.23 1.56 4.05 3.06 1.40 3.07 11.77 10.97 3.03 2.37 4.24 2.64 3.66 10.60 2.61 4.84 4.50 2.74 4.64 3.61 5.44 1.80 1.23 3.81 2.74 7.85 10.44 2.80 2.15 1.52 6.49 5.00 0.99 1.21 2.58 1.51 4.96 2.20 3.74 1 93 3.92 5.07 4.44 2.61 4.70 3.95 1.30 5.11 4.14 5.20 1.78 6.13 2.75 4.38 2.93 3.14 3.09 1.85 0.94 6.56 3.11 1.29 6.38 6.63 3.75 4.41 5.71 4.37 3.54 2.07 5.38 1.39 3.00 3.82 4.48 1.10 3.95 6.29 2.56 4.70 3.57 3.06 2.09 3.21 5.77 1.01 3.59 2.51 5.64 7.59 1.25 0.56 4.14 0.96 2.28 5.85 8.67 2.85 4.76 2.82 4.15 0.25 3.07 4.46 2.27 4.13 3.97 7.08 3.52 1.82 9.78 3.32 4.44 4.41 3.26 2.65 2.63 1.48 0.47 0.40 3.58 2.92 1.36 2.45 3.20 2.49 1.76 4.40 3.77 6.37 1.02 3.76 3. 2.80 0.91 5.09 5.84 1.33 0.76 3.95 2.42 2.06 4.57 0.71 4.41 0.93 3.67 1.07 2.14 0.42 6.13 2.07 7.75 1.35 0.83 2.78 0.75 2.82 2.71 1.38 1.45 0.82 1.97 2.02 0.13 1.69 0.52 3.06 2.86 1.58 2.49 1.33 1.99 0.53 8.70 2.98 2.43 0.24 2.02 5.52 7.06 4.66 2.46 6.71 3.39 3.10 0.47 4.40 5.56 6.57 2.14 1.82 2.54 1.27 3.51 1.35 0.94 1.65 5.55 3.57 3.81 3.55 2.65 3.96 2.16 2.37 1.03 1.74 3.34 3.47 0.46 3.86 1.89 2.66 1.67 5.16 4.01 2.87 4.02 2.41 4.19 3.52 1.05 2.79 46.43 46.27 47.87 36.18 35.49 42.75 31.07 30.42 39.06 47.09 48.44 31.70 31.90 29.04 30.06 33.67 44.12 39.09 45.18 52.94 34.09 39.21 248 Section 66 — Precipitatiox in Southern Illinois. Palestine, Craivford County, III. — Elevation, 500 Feet. Year. Jan. Feb. Mar. j Apr. \ May. June. July. Aug. Sept Oct. Nov. Dec. Annual. 1882. 1883. 1884. 1885. 1886. 1887. 1888. 1893. !894. 1895. 1896. 1897. 1898. 1900. 1901. 1902. 1903. 1904. 1905. 1906. 1907. 1908. Means . 2.10 1.90 3.25 2.88 1.01 1.75 2.72 9.20 2.00 1.15 2.00 2.21 4.37 1.00 3.38 5.33 3.74 1.95 1.03 2.46 2.60 4.10 2.00 4.81 6.55 1.60 8.47 4.40 1.65 1.70 4.83 1.47 2.20 4.96 5.68 4.97 4.39 5.01 *0.63 2.47 2.95 1.56 1.95 4.55 2.95 1.43 3.97 2.30 1.45 2.25 0.10 5.89 3.62 1.79 0.46 2.55 4.18 4.72 1.71 5.65 4.15 1.88 3.40 1.97 1.66 2.19 11.02 11.45 4.96 4.02 5.57 3.77 4.47 9.76 2.82 5.07 5.55 4.13 2.97 3.24 4.33 3.40 3.05 4.70 5.36 3.84 2.08 1.37 4.07 1.84 9.18 9.12 2.88 3.65 1.07 5.60 3.82 1.91 1.47 2.52 2.23 5.41 1.95 3.36 1.32 3.54 4.64 3.59 2.09 5.38 2.85 3.56 5.30 2.40 4.00 4.31 0.76 6.60 3.70 5.60 3.43 3.90 3.45 3.15 3.28 3.86 1.34 4.60 0..52 3.16 3.67 1.40 4.15 9.58 5.60 4.43 5.09 3.40 6.15 1.30 *4.98 5.50 2.58 *2.87 3.53 4.60 2.68 2.05 7.33 3.61 4.06 3.40 6.77 6.42 7.73 2.51 2.22 1.46 1.66 4.48 1.96 1.92 8.30 3.34 2.40 3.69 1.59 2.30 2.46 2.35 0.86 2.47 0.71 1.85 7.04 7.76 2.08 2.80 2.98 11.96 0.97 1.63 4.. 51 3.81 6.28 3.56 4.15 2.48 3.56 3.27 1.95 1.75 3.08 3.21 2.60 4.50 2.95 3.56 6.30 3.02 2.71 3.92 3.10 3.22 0.01 4.29 3.12 2.00 2.75 6.22 6.83 2.78 2.94 9.97 7.32 0.87 2.17 0.35 5.29 8.73 2.21 2.44 0.76 5.44 5.38 1.33 1.60 3.33 2.94 1.46 4.30 1.60 7.42 1.47 4.43 1.38 3.14 0.73 2.44 4.05 0.60 1.78 3.64 3.05 2.37 3. 1.68 7.58 1.40 2.59 0.26 0.S8 55 33 97 2.15 0.57 2.60 1.09 4.61 2.99 1.59 2.79 2.40 2.66 0.10 8.54 1.09 2.70 0.10 2.02 7.65 2.27 2.61 5.52 4.21 5.67 5.43 2.74 5.65 4.43 3.12 1.05 4.85 5.30 6.33 3.15 2.13 4.06 2.00 3.37 1.95 1.10 1.80 5.05 2.90 3.23 3.88 4.10 5.84 2.33 2.60 3.40 2.16 1.93 1.90 2.13 2.00 1.53 2.22 3.69 0.54 3.18 2.33 3.62 2.64 5.34 3.78 1.42 4.48 2.61 3.35 3.34 1.40 2.88 * Interpolated from surrounding stations. Section 66 — Precipitation in Southern Illinois. St. John, Perry County, III. — Ehvation, Jf59 Feet. YesiT. Jan. Feb Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. tl887 4.11 3.50 '2!66* 3.29 3.70 'siio" 2.40 2.20 0.21 6.00 2.47 0.70 tl8SS 3.20 2.20 2.60 4.60 2.50 40.80 +1XS9 2.85 2.25 isyo 1891 0.46 4.25 2.22 4.16 1.10 2.09 1.54 4.19 0.69 1.00 4.78 1.25 27.73 1892 1 50 2 56 2.16 5.98 7.76 2.14 2.08 *1.73 0.56 2.74 3.53 1.35 34.09 1893 0.40 2.93 3.69 9.81 3 74 4.66 1.16 1.58 2.79 2.58 3.20 1.28 37.82 1H94 1.86 3 56 3.91 2.62 3.62 3.40 1.37 1.69 2.66 2.91 1.59 2.74 31.93 1S95 2.07 1.05 2.94 2.12 2.50 2.84 5.07 2.04 2.59 0.83 *4.94 *3.56 32.55 1«96 1 58 2 43 3.89 3.19 9.46 4.40 6. S3 2.14 2.70 1.94 3.86 1.31 43.73 1897 3 17 2.46 11.55 4.55 2.45 4.. 52 1.91 0.66 1.50 1.46 4.70 4.16 43.09 1K98 4 07 1 32 9.98 3 53 6.06 3.15 7.52 2.S6 3.60 3.06 1.17 2.87 49.19 1899 3.65 3 73 3.34 2.67 3 03 4.73 3.60 2.53 0.S4 4.08 2.76 2.08 37.04 1900 1 98 4 19 1.85 2,59 4.8.5 *7.23 4.89 2.47 3.20 1.12 3.27 2.59 40.23 1901 1 38 1 83 4.59 2.48 1.68 *1.60 *0.07 2.46 0.45 2.71 1.03 3.24 23.52 1902 1,51 1,16 4.20 2.09 3.07 3.03 3.49 2.12 2.44 1.02 4.10 4.54 32.77 1903 1.49 3 64 3.22 2.25 1.89 1 37 2.04 2.39 1.33 2.29 1.12 2.05 25.08 1904 2.63 2.84 8.26 3.43 t3.16 4.39 6.66 4.16 4.69 0.83 0.65 2.96 44.66 1905 2.51 1.94 2.77 4.25 3 07 3.56 13.49 1.86 3.89 3.60 1.85 2.81 45.60 19W) 4 30 3.65 4.38 1.33 0.94 2.75 3.37 2.64 8.28 0.8.5 6.40 5.66 44.55 1907 6.47 0.82 2.64 2. 50 5.08 8.18 3.18 7.48 1.65 1.96 3.66 3.53 47.15 190S 2.28 2.47 5.55 2.72 3.67 4.34 7.31 3.62 6.21 3.83 1.41 3.90 4.72 3.88 2.16 2.67 0.96 2.40 T 1.98 tl.88 3.11 tl.l6 2.72 37.31 Moans 37.56 * For Ilallidayboro, 10 miles distant, t For Duquoin, 2 miles distant. t For Benton, 17 miles distant. 2VJ Sectiox go — PijECiriTATiox IX SouTiiKiix Illinois. St. Louis, St. Louis County, Mo. — Elevation, 5G8 Feet. Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec Annual. 2.08 0.84 3.72 2.21 1.80 0.84 0.45 2.34 3.36 1.83 2.98 2.12 1.86 4.18 1.94 61 0.99 0.52 1.18 4.66 1.03 0.41 3.42 2.32 1.80 1.16 4.01 4.11 2.74 0.87 4.16 2.28 1.71 2.02 2.25 2.53 0.64 3.53 3.14 0.54 4.75 1.24 3.36 1.64 3.83 0.49 2.80 0.94 0.79 3.26 3.11 0.65 2.15 3.04 7.47 1.35 1.52 0.33 2.56 1.65 1.43 3.75 4.53 1.66 0.65 1.12 1.18 1.06 1.35 1.11 2.50 1.38 0.88 3.90 1.90 1.73 1.07 1.27 3.58 2.27 0.56 4.10 6.74 2.12 1.67 3.11 0.70 3.64 7.74 2.12 5.35 2.60 01 80 99 82 0.55 2.49 0.33 2.92 1.15 1.52 3.66 2.59 2.86 0.88 1.69 1.48 2.65 4.16 8.94 5.88 4.43 0.87 1.71 3.68 2.39 4.78 2.86 2.95 4.89 2.98 2.88 0.43 2.81 2.67 1.71 3.40 5.09 1.86 0.83 3.14 I 4.58 3.13 1.51 2.59 2.10 4.99 2.21 3.49 4.84 3.18 1.27 2.28 6.61 2.70 5.63 3.14 7.67 0.79 7.49 2. 89 1.06 1.80 3.96 7.32 1.16 7.38 4.11 3.02 1.71 8.61 2.80 2.37 7.66 4.24 2.76 1.27 2.43 2.10 4.36 4.08 6.90 41 4.39 92 51 95 49 29 00 0.40 3.04 3.54 3.79 1.62 5.99 2.29 1.92 5.10 2.69 2.82 2.03 , 8.25 I 7.73 3.96 1.45 2.94 4.50 3.20 2.34 3.36 5.46 3.31 3.85 3.48 4.87 3.86 2.28 4.84 3.98 3.16 2.64 7.68 4.70 2.28 3.24 7.60 2.65 6.35 1.72 6.07 4.89 2.03 3.18 4.82 1.55 5.58 3.31 1.56 53 7.08 4.61 2.39 0.49 2.77 6.88 3.44 2.53 2.25 3.03 6.74 2.31 3.31 14 58 31 15 84 10 36 1.88 1.68 4.05 2.29 7.60 10.84 2.68 0.46 2.43 4.66 3.85 1.98 1.&3 2.35 2.49 2.79 1.95 3.00 1.68 7.93 4.58 2.38 3.22 4.15 11.26 4.42 3.75 4.36 8.10 2.71 7.47 2.83 5.19 3.64 6.. 30 7.46 3.03 4.81 10.64 6.60 2.29 4.39 2.51 2.68 3.90 5.66 2.24 8.26 3.96 3.60 2.73 3.15 6.04 5.73 3.70 5.48 3.13 3.11 4.63 0.95 3.44 3.96 4.55 2.89 2.68 2.80 7.84 5.27 3.81 3.80 5.81 2.73 7.87 5.42 3.61 3.16 9.12 1.59 8.55 6.32 4.47 2.69 3.04 2.08 1.34 3.46 3.73 7.26 6.27 1.67 5.12 3.95 6.85 10.01 5.21 8.61 17.07 6.46 1.47 6.19 10.25 3.23 3.21 4.27 1.24 3.71 6.69 11.02 6.58 4.96 2.85 3.16 0.41 5.21 5.59 5.64 1.58 6.25 1.38 2.51 4.28 6.68 2.00 10.84 3.43 8.69 2.40 4.04 2.56 2.74 4.53 5.04 4.52 7.68 7.09 2.54 8.09 4.72 3.18 5.97 2.73 3.49 1.12 2.46 4.57 5.32 3.85 2.32 2.62 3.92 7.86 5.71 4.97 12.25 5.16 5.79 1.28 55 1.88 2.51 1.99 6.76 4,08 3.68 3.66 6.51 5.90 2.59 4.20 5 02 2.48 2.73 2.85 0.79 1.96 2.01 3.13 4.47 0.06 3.06 2.09 0.44 5.71 2.89 2.45 3.96 2.48 2.00 2.36 7.15 3.96 6.30 1 73 0.71 3.09 5:63 3.22 6.81 5.44 3 93 1.76 2.64 2.17 2.57 2.. 38 2.39 2.49 1.32 2.19 1 55 4.82 1.72 8.13 0.45 0.30 2.25 1.17 1.61 4.75 6.23 1.03 1.16 1,10 0.93 0.84 4.73 •4.84 2.71 2.11 10.90 5.37 0.90 3.26 8.74 8.63 0.89 5.37 9.74 1.12 2.41 1.91 5.74 9.40 5.15 5.81 2.17 2.11 1 82 4.83 2.10 3,74 2,71 6 24 2.59 1.77 8.97 0.49 1.51 1.99 3,90 3.36 1.60 1.47 5.26 3.29 3.48 4.10 5.48 4.67 0.96 1.51 1.08 0,92 1.80 1.44 4.15 1.94 1.49 5.17 6.53 3.89 3.89 5.16 3.10 4.61 6.32 3.51 2.10 4.90 4.29 2.82 4.15 3.18 3.02 3.80 1.87 8.03 2. 87 3.86 7.73 4.92 8 52 5.54 2.93 4.44 1.80 5.43 3.76 2.97 2.96 2.11 1.58 1.63 2 08 2.04 3.44 4.14 2.85 1.39 1.09 3.61 1.32 6.27 3.73 3.59 6.38 2.51 6.93 1.56 4.76 2.15 4.03 3.60 4.91 2.82 3.15 5.25 2.72 7.94 1.97 2.60 3.33 0.00 3.63 3.68 3.71 10.53 2.01 1.37 1.87 3.71 2.29 0.17 1.31 2.74 3.65 2.03 8.53 5.25 2.11 2.04 3.09 2.49 5.51 1,70 3.42 7.48 3,16 1.59 6.55 1.14 3.35 1.94 2.76 1.64 3.55 0.25 2.07 1.83 1.17 4.59 0.93 3.38 0.55 2.01 1.70 5.96 0.07 3.02 3.27 1.64 5.10 5.71 4.70 2.30 1.09 2.32 1.46 9.50 2.66 0.24 1.23 0.89 2.42 5.90 5.03 7.63 1.66 1.74 0.18 2.88 2.61 3.56 4.92 3.76 3.34 3 92 4.75 3 42 3 27 1.38 3 48 1.97 2.23 1.34 0.68 4.30 2.84 5,17 1.53 3.10 2.09 2.67 1.80 2 13 31 3.14 7.21 6,74 1.40 3.84 2.20 1.73 2.44 3.24 1.81 4.31 3.34 0.01 6.60 3.71 1.78 2,86 1.21 6.04 2.48 2.30 6. IS 2.58 2.96 8 98 7.51 1.68 2.03 0.55 2.44 9.60 0.85 3.36 2.65 2.74 1.14 2.47 0.76 4.61 3.54 2,09 6.66 1.31 2.59 4.40 2.01 2.02 0.85 3.54 1.65 4.43 1.03 0.37 2.43 1.80 0.86 1.55 1.32 1.50 2.75 1.43 0.65 5.30 1.32 4.64 1.75 1.59 1.66 3.46 1.99 2,49 0.65 3.69 1.66 1.36 1.32 1.35 1.66 3.11 1,56 1,49 2,73 7.26 2.08 2.01 0.23 3.98 4.66 4.67 2.12 2.42 1.20 3.70 1.05 3.23 0.66 0.09 0.31 6 21 3.43 7.44 0.87 3.23 4.34 2.07 1.03 4.54 2.77 1.27 2.89 1.95 1.55 3.85 1.30 2.68 2.07 3.10 0.40 1.47 0.76 0.64 2.12 1.21 3.72 2.34 5.20 1.98 2.00 3.20 3.81 2.68 6.16 3.06 1.37 0.61 1.25 250 St. Louis, St. Louis County^ Mo. — Concluded. Year. I Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 1904 3.15 2.47 3.57 7.35 2.08 2.27 0.84 1.12 2.92 1.12 3.39 2.64 7.87 2.35 4.53 2.39 3.43 3.61 5.25 2.32 1.98 3.65 3.84 3.61 2.88 4.67 2.61 5.57 7.72 4.53 4.64 2.72 2.80 4.96 3.02 4.83 3.09 4.42 0.98 3.32 4.24 3.69 2.62 2.58 3.72 4.36 1.55 3.48 2.97 5.56 4.40 1.57 1.24 3.00 0.50 6.64 1.25 3.15 0.21 2.83 0.54 1.63 4.67 1.89 2.83 2.99 1.36 2.06 2.09 2.06 0.64 2.62 33 71 1905 38.54 1906 35 52 1907 41.39 1908 Means 34.19 40.10 Section 66 — Precipitation in Southern Illinois. Tilden, Randolph County, III. — Elevation, 500 Feet. Year. 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 Means... Jan. Feb. Mar. Apr. May. June. July. Aug. Sept, Oct. Nov. Dec. 1.65 4.62 2.66 4.49 2.27 1.93 0.88 2.97 2.28 7.09 3.41 2.17 3.27 5.18 1 82 2.79 7.23 1.30 10.22 2.26 3.55 4.48 2.49 3.55 2 35 1,68 *1.60 3.68 8.11 3.41 3.59 2.27 1.51 5.15 1.66 8.12 3.93 7.33 6.54 2.92 1.38 1.73 7.06 4.34 0.62 2.38 1.59 1.88 5.22 2.00 2.74 2,87 4 27 0.65 3.43 0.66 1.93 6.23 1.83 1.67 4.09 1 52 11.03 5.91 3.22 2.95 2.22 2.59 2.44 5.95 2.19 0.28 1.77 2.74 9.23 4.09 4.14 2.64 2.39 3.07 6.55 1.68 1.23 2.30 2.60 2.81 3.93 3.57 1.17 3.15 1.32 3.91 1.22 0.77 2.84 1.50 0.45 2.53 1.03 3.08 3.84 3.75 2.56 2.65 0.41 4.30 5.45 1.33 2.36 3.69 3.64 8.56 2.84 6.06 1.47 3.15 1.56 3.43 0.22 3.16 2.37 10.51 3.55 1.57 4.88 0.93 0.49 0.27 1.13 4.54 4.13 3.83 1.94 9.95 3.40 5.93 5.09 6.91 4.85 4.81 6.36 1.88 1.97 2.16 2.81 2.27 1.30 3.34 2.72 5.79 1.64 0.93 2.75 1.33 1.89 0.63 3.05 1.25 2.37 2.79 6.66 3,42 l.oO 3.22 2.20 3.38 1.19 0.99 1.96 3.03 2.11 2.32 1.37 1.33 1.05 2.37 2.28 2.40 3.59 0.96 76 4.47 2.04 4.70 2 82 2,71 4 15 3.79 1,42 4.09 4.33 0.95 2.89 3.06 3.13 2.69 2.51 1.35 3 58 1.63 4.32 2.05 1.69 2.39 1.83 8.66 4.62 3.14 5.18 2,23 5.33 6.47 0.57 0.86 1.66 2.61 1.52 3.79 4.63 3.09 0.26 11.34 3.20 5.19 3.91 2.02 2.92 4.51 2.64 4.36 1.77 2.80 2.98 1.72 4.42 7.42 1.52 5.70 3.23 6.13 1.16 2.66 3.73 5.40 4.41 2.60 5.11 3.99 3.01 3.17 4.05 2.03 5.61 3.94 7.02 7.08 2.30 5.26 2.74 1.32 0.10 4.34 0.72 2.49 2.60 4.18 3.81 3.93 3.62 3.33 3.33 3.15 2.35 3.51 2.47 Values, 1887 to February 1898,*for Jordans Grove; values March 1898, inclusive, for Tilden. * Interpolated from surrounding stations. Section 66— Precipitation in Southern Illinois. Veimon, Marion County, III. — Elevation, dl5 Feet Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual. 1899 3 32 2.97 2. 51 1.44 2.77 0.87 0.50 2.69 5.42 2.50 3.31 1.01 3.24 3.06 1.72 1.35 2.06 3.19 3.46 1900 0.75 1.62 1.15 1.05 3.37 1.05 4.50 6.82 1.53 2.43 3.91 1.S6 1.07 2.51 0.25 1.65 2.40 88 4.98 1.72 1.40 3.21 4.24 3.47 6.43 2.65 5.36 4.77 2.97 3.83 1.05 1.97 2.20 4.36 4.43 4.57 2.25 3.45 5.22 3.28 8.02 2.24 2.04 0.62 4.82 4.97 2.30 3.82 9.03 2.07 6.62 2.60 2.50 5.47 3.12 4.96 5.38 2.95 *2.02 2,93 3.4S 9.72 1.00 4.56 2 93 1.61 4.08 2.87 5.32 2.36 4.00 6.55 4.33 0.71 2.S2 1.48 3.98 2.55 4.70 0.51 3.20 2.59 1.52 3.05 0,81 5.87 1.05 4.08 43 52 1901. 25 51 1902 33 59 1903 1904 27.53 37 24 1905 45 61 1906 39 29 1907 1908 46.36 Means 3.60 4.55 4.00 3.72 2.64 2.83 2.41 2.49 37.50 * For Greenville, 17 mile-s from Shobonler. Values, April, 1900 to April, 1906, are for Shobonier; values. May, 1906 to April, 1908, are for Vernon. These stations are 4 miles apart. 251 Section GQ — Southern Illinois. Average Number of Days with .01 or More of Precipitation. stations. H-5 XJ ^ 03 < Q >> 3 ^ < O o 1 OS 3 a a < Albion 16 7 37 16 13 10 14 18 21 10 21 13 19 20 15 14 14 21 19 17 38 20 9 8 6 12 9 8 10 6 8 9 7 8 8 9 11 7 8 7 6 9 8 6 6 6 10 9 8 8 6 8 8 7 8 9 9 10 8 8 8 7 9 9 5 10 9 12 11 11 11 9 10 11 10 10 10 11 10 12 10 11 10 10 8 11 11 7 8 6 11 10 9 9 8 9 i 8 10 9 10 9 9 9 9 8 11 10 8 9 7 11 10 10 11 8 8 7 11 10 9 9 9 8 9 9 8 9 8 8 8 8 8 7 8 8 9 8 8 7 8 8 9 9 7 7 6 8 7 6 8 6 7 7 8 6 7 6 8 7 6 7 7 7 8 7 6 5 5 7 6 6 7 6 7 6 7 7 6 6 7 7 7 6 6 6 6 7 7 5 5 3 I 5 5 4 5 5 6 6 4 5 5 6 5 5 6 5 5 7 6 5 7 4 9 7 6 6 6 7 7 6 8 6 8 6 8 6 6 8 7 5 9 8 6 8 7 11 8 7 9 8 8 • 8 7 8 8 8 6 11 8 8 8 6 9 9 7 89 Benton 73 Cairo . 118 Carlyle 101 Cobden 93 102 Fairfield 84 flora * 10 1 9 96 10 11 10 8 10 11 11 9 10 9 9 9 12 11 10 10 10 7 9 10 11 10 10 9 g 9 11 9 9 98 Grafton 9/ 101 Halfwav Kb McLeansboro 100 94 Mt. Carmel 114 ^Xt Vernon 93 94 Olnev 96 92 St John 84 112 Xiiden 104 Vernon V8 Section GQ — Soutiieen Illinois. Average S note fall. stations. Albion Benton Cairo Carlyle Cobden Equality Fairfield Flora Golconda Greenville Halfway McLearisboro . Mascoutah . . . Mt. Vernon... New Burnside Olney Palestine St. John St. Louis, .Mo. Tilden Vernon 16 7 23 8 12 10 12 20 18 16 12 19 21 13 13 20 19 13 38 20 4.7 4.7 4.2 7.3 2.5 4.1 2.2 3.9 3.9 6.4 4.0 4.2 6.5 3.6 4.0 5.8 5.8 2.7 5.1 3.9 8.0 0.1 0.6 T T 0.5 0.7 0.3 0.3 0.2 0.6 1.2 0.4 0.6 0.5 0.7 0.4' 0.2 0.4 0.9 0.6 0.6 ft t^ i i c^ o ^ ^ 0.7 3.1 0.4 1.9 0.7 1.8 1.8 3.1 0.4 1.4 T 0.6 2.1 0.5 3.5 T 0,7 3.8 6 2.3 1.7 4.3 0.2 3.0 0.9 2.2 0.9 3.4 T 0.6 3.9 T 0.5 1.9 T 0.9 4.4 T 0.9 4.3 0.2 1.6 T o.s 2.8 T 1,0 2.8 0.4 4.S 15.7 13.6 11.4 20.3 9.3 14.2 13.4 16.4 12.7 25.6 14.8 14.6 22.1 15.9 12.9 20.4 18.9 10.3 18.5 16.2 23.0 252 Section 6G — Southern Illixois. Mean Temperature. Stations. S.8 64.3 74.0 77.9 75.9 69.8 44.9 54.3 66.2 74.0 77.9 77.0 70.4 47.9 56.6 67.7 75.0 79.1 78.3 72,4 44.0 54.7 65.4 74.7 77.9 76.2 69.7 42.0 .5;i.9 63.6 73.0 76.5 74.1 67,4 46.9 56.0 67.3 75.2 78.3 1 1 .1 71.0 44.2 56.2 66.2 74.9 79.1 11 .0 70.4 44.7 55.8 65.4 73.9 77.2 75,8 69 6 45.0 53.2 65.0 72.4 77.7 76.0 69.0 56.8 60.0 59.6 60.2 59.8 58.3 55.5 59.7 56.5 59.0 .1 56.6 58.1 .0 56 .2 0/ .8 58.6 .3 58.0 34.2 37.0 38.8 36.6 37.0 34.6 55.2 57.6 58.0 57.0 57.2 55.5 34.3 53.8 37.4157.3 32.9 54.0 36,6157.0 36.0155,4 34.8i54,6 33.5155.5 36.3157.3 35.4 55,2 33.1 53.4 35.7 56.3 36.1 56.2 36.055.4 33.4154 5 Section 66 — Southerx Illinois. Lowest Temperature. stations. t.1 1^ >. >> s 3 5 22 32 37 50 14 21 30 42 54 6 24 37 46 57 24 31 42 52 4 24 33 42 54 22 29 40 51 —2 22 29 38 50 3 24 31 43 53 —2 23 30 36 46 3 24 34 42 55 2 22 32 44 50 1 21 29 40 50 20 29 41 50 3 21 31 44 51 1 23 30 38 49 — 1 22 28 38 48 2 22 29 35 51 3 22 32 44 55 1 20 28 41 50 ' 23 28 41 48 3 < 1. , > 50 28 22 48 35 28 13 52 36 24 7 49 32 25 10 50 27 26 12 48 25 24 9 47 25 21 6 48 32 25 12 45 30 19 5 .53 30 29 14 46 29 24 —2 47 24 22 9 49 23 22 10 49 25 17 9 48 27 21 2 46i 28 22 6 49 27 25 10 52 37 24 5 46 22 20 9 41 20 24 8 Albion Benton Cairo Cobden Equality Fairfield Flora Golconda Greenville Halfway Mf'Leari.sboro .Masooutah Mt. Vernon New Burnside Olney Palestine St. .John St. Louis, Mo Tilden Vernon 16 -u 6 37 -16 13 —6 10 —13 14 —22 17 —25 21 —8 21 —13 12 —6 U —11 21 —20 14 —8 14 -7 21 —17 19 -19 17 —11 38 —22 20 —10 8 -22 -10 —10 —10 —9 —9 —9 -13 -16 -10 -10 -15 -10 —8 —8 -15 -14 —17 -14 253 Section 66 — Southern Illinois. Prevailing Wind Direction. ■Si . "3 Stations. W « xi ;-<' cS S i >> ^ p. eg > o ?; 3 a G -5 ^ ^ 1^ < ^ >-i ►-J ^ o ^ p < Cairo 37 S N s R R s s s s. s N s s. 38 NW. NW. s. SE. S. s. s. s. s. s. s. s. s Section 66 — Southern Illinois. Highest Temperature. Stations. u \It xk i oa Q, 03 S < S i-> 83 90 95 103 88 88 95 100 85 89 92 98 -86 90 95 103 92 94 95 104 89 92 95 102 86 90 92 100 86 90 95 100 88 92 95 102 85 90 92 102 85 93 96 105 85 94 95 103 92 91 96 100 86 95 97 104 87 89 96 101 85 88 95 100 87 92 97 101 90 91 94 102 86 89 93 104 87 89 93 103 Albion Benton Cairo Cobden Equality Fairfield Flora Golconda Greenville Halfwaj^ McLeansboro. Mascoutah . . . Mt. Vernon... New Burnside Olney Palestine St. John St. Louis, Mo. Tilden Vernon 16 72 6 71 37 74 13 73 10 75 14 73 17 72 21 74 21 73 12 72 19 74 21 74 14 72 14 73 21 72 19 70 17 73 38 74 20 77 8 72 92 79 73 96 84 68 90 80 74 95 83 72 92 82 71 94 79 70 96 79 71 92 82 74 95 79 71 95 81 68 93 80 72 90 82 76 94 80 70 94 79 70 93 78 70 92 79 70 94 83 76 91 82 74 94 80 72 91 SO 68 109 102 106 112 112 113 108 108 113 110 110 109 112 112 109 105 112 107 HI 112 Section 66 — Southern Illinois. Mean Relative Humidity. " ■ Stations. ,• -i i 1 ^ ^ ^ ^ 3 < 1 > 1 < Cairo, 8 A. M 21 82 80 77 74 79 82 81 85 84 83 80 81 81 Cairo,8P.M 21 73 71 67 61 66 69 69 71 71 66 66 72 69 St. Louis, Mo., 8 A. M 21 80 78 77 72 76 76 75 77 7S 76 82 77 St. Louis, Mo., S P. M 70 70 66 67 59 62 61 59 59 61 58 64 69 63 254 Average Hourly Wind Movement (in Miles). Stations. Ill c 1-5 < i be < o O > o 1 C 18 18 9.7 11.5 10.6 11.5 11.3 12.1 10.2 11.6 8.3 10.2 6.9 9.1 6.2 8.3 5.8 7.9 6.3 8 9 7.1 9 9 8.9 11.0 9.7 11 3 8 4 St. Louis, Mo in s SeCTIOX GG SOUTTIERX ILLINOIS. Frost Data. Stations. Length of record - Years. Albion Benton Cairo Cobden Equality Fairfield Flora Goloonda Greenville Halfway McLeansboro- Mascoutah . . . Mt. Vernon... New Burnside Olney Palestine St. .John St. Louis, Mo. Tilden Vernon Average date of first killing frost in autumn. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. Oct. A_vprage date of last killing frost in spring. Earliest date of killing frost in autumn. Latest date of killing frost in spring. Apr. Apr. Mar. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Apr. Oct. 18 Apr. 14 Sept. 23 May Oct. Oct. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. May May Apr. Apr. Apr. Apr. May Apr. May Apr. 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I CM to to f X I l^ t^ O to rH ! CM CM -H CM CM 885 CO CM CM CM CM CO CM ' P T»< to CO 11? P X d to X to -^ X ■ lOSiOt^OOCMOOfO-fl^-^I^O! ICOCMCMCMC^JlOCOCOCMCMCMCMCOC O CM p I- O t- to CM X to t- CM ^ CT> CO CO CM CM CO CO CM = = O g ce 03 ^►^ o O -^--JZ c ©so '£^^55 S w£ -17 S W 258 Climatological Repokt- Monthly and Annual Mean Precipitation for the Jan. Feb. 1 Mar. Apr. May. ' stations. i 1 I 1 1 a 1 1 1 s. 1 NORTHF.RNT DISTRICT. Aledo 24.8 25.1 25.4 26.4 "+s.b +5.4 31.1 29.3 29.6 30.1 *+9!i +7.5 36.2 33.4 d33.7 34.6 "-^'.8 0.0 47.8 42.3 C45.0 45.2 44.6 45.1 C43.6 46.8 45.8 43.4 48.4 46.2 49.4 46.6 44.0 47.8 45.2 43.0 47.3 47.2 49.5 49.2 45.8 "—2'.h -2.7 —5.4 -0.8 '-3'4 -2.8 —5.5 —0.9 -3.3 —0.5 -2.0 —3.6 -2.2 —2.2 -4.5 —2.5 -2.1 -0.5 —1.7 -3.2 58.6 56.0 57.8 57.0 57.0 55.9 56.0 59.2 58.1 58.2 58.4 58.3 59.1 57.6 56.5 57.6 d55.0 56.0 58.6 58.2 59.0 60.6 57.6 —1.9 -2.1 —5.1 28.8 22.9 24.9 a24.2 21.4 27.9 24.2 27.6 27.0 a24.4 25.6 27.4 22.2 26.7 27.1 27.6 25.5 24.6 +5.1 "+4.i +3.5 +3.1 +1.4 +1.8 +4.3 +2.4 +3.9 +3.3 +4.1 +1.3 +4.4 +3.0 +3.5 +2.6 +3.2 32.4 26.6 31.0 28.8 26.9 32.7 29.6 32.7 31.2 28.2 31.1 31.0 27.0 31.8 31.6 33.0 31.8 29.6 +7.0 '+7!2 +7.7 +5.3 +7.1 +8.1 +8.5 +8.1 +7.1 +8.2 +8.7 +6.1 +6.8 +7.2 +9.0 +9.0 +8.9 36.0 32.8 35.8 b34.5 32.8 36.8 35.2 37.8 35.7 34.1 66.8 34.9 33.0 36.2 37.4 38.0 37.4 35.7 +1.6 "+0A -0.3 —0.4 +0.4 —1.4 +0.9 —1.2 +0.3 +1.0 -0.5 -0.3 -0.6 +0.S +0.4 -0.8 +0.6 -0.6 Dakota Davpnport, Iowa Dixdii - - • -2.3 —1.6 -2.6 Dwight —2.7 Galva -2.7 Henrv -2.2 Joliet -3.2 TCishwaukco - -1.6 Knoxville -3.9 T,n (rrnripp . .... -3.3 Lanark -2.8 LaSalle —2.2 -2.3 Minonk —3.4 -1.6 \f (jrriion —2.6 OroEon Ottawa 27.2 28.3 24.6 b25.8 26.4 d27.2 24.7 26.3 26.6 23.6 26.3 21.9 29.5 29. S 26.8 31.0 28.2 a27.C 30.4 32.1 28.5 28. C 27. e 29.7 29.4 28. S 32.2 29. J 28.2 27.2 a28.C d31.4 29.{ +3.0 "+6.0 +4.2 +3.5 +2.0 +4.9 +2.5 +3.4 +2.8 +4.6 +0.0 +3.4 +2.0 '+2!6 +1X +1.3 +3.9 +3.2 *+i!o +2.7 +2.7 +1.3 +1.6 "+n +3.4 +6.7 +2.1 32.2 33.6 28.1 bSO.l 30.2 31.6 29.4 30.8 a31.6 28. 30.4 27.1 30.3 34.7 32.6 37.9 33.4 33.2 36.4 36.2 032.6 33.0 a3.9 35. f 34.8 34.0 37.6 33.5 34.1 31.4 33.0 b37.2 35.4 +7.5 "+7!6 +6.3 +8.5 +8.3 +8.2 +9.0 +8.9 +7.6 +8.5 +6.9 +7.8 47.1 '+7^8 +8.3 +7.2 +7.0 +6.1 "+7'.(- +7.2 +5.7 +6.3 +8.5 "+7'.'r +4.6 +5.S +7.3 37.1 38.2 b33.0 34.4 34.8 37.1 33.8 35.8 36.4 33.2 34.7 32.6 35.3 40.5 38.0 41.7 38.2 38. S 42. f 41.2 39.6 38. f 40.2 40. fl 40.0 40.0 42.)^ 38.4 38.8 38.7 a38.S 41.4 41.(1 43. f 41.2 +0.2 "+i'.7 +12 —1.0 -1.3 +0.7 --0.1 -1.0 -0.5 +0.4 —1.7 0.0 --0.6 —2.1 — i'2 — o.r +0 2 +0.8 0.0 0.( — l.fi +0^2 "+6"mont '-3^3 Hiishncll ("jiflinvillo 62.0 60.7 a61 .0 60.6 60.8 61.4 61.4 61.9 61.4 59.3 60.9 60.2 -2.0 —2.6 -2.8 I)('('afiir . . —2.5 'iriKKfi^'ill'' -2.7 lliiniiibal Mo ■.- —3.0 -2.0 Ilillsboro —3.4 KroKiik Iowa -2.3 -2.6 Mart insvillo. Morrisonville I'lilosI ino 61 .e 60.4 62.2 61.4 -2.4 -2.8 -1 .3 I'uim 31 .f +3.3 35.8 +6.3 -1.7 259 Illinois Section — Yeah 1909. Year 1909, with Departures from the Normal. June. July. Aug. Sept. Oct. Nov. Dec. Annual. . q3 CL> . o 6 6 1 1 a t 1 P 1 I a i I a a 1 a 1 OJ Q) +1.^ ^ +1A 2 +2.' 34.4 31.8 32.6 34.4 39.8 33.8 34.7 37.7 35.0 33.6 32.9 35.5 C34.7 34.6 38.9 42.5 43.8 43.1 43.4 41.2 42.4 41,0 39.4 41.1 37.2 42.0 40.0 39.4 36.4 38.1 40. C 39.4 38. £ I 40. f ) 40. -i ■ 34. C +7.0 +5.9 +6.2 +10.1 "+5.h '+7"8 '+6'6 +6.9 +7.4 '+6^2 "+7'6 +8.0 +9".0 +9.0 +8.8 +5.0 +6.6 +8.9 +6.3 +8.4 +4.7 +4.6 +8.0 +5.S +7.1 +7.1 +7.: 40.5 36.8 39.0 39.8 43.2 39.7 40.2 42.8 40.6 39.8 38.0 42.0 40.6 40.2 43 2 b46.2 47.6 46.4 47.6 46.0 47.2 44.5 43.1 45.2 42.0 45.2 44.2 45.5 44. C 44.(1 43.2 43. f 43.4 45. ( 44.1 39.' 0.0 -0.2 +0.2 +0.5 '+i'i -0.2 —1.4 '+6'6 '+1.4 -0.8 -1.2 -0.3 .+0.5 -1.3 0.0 —1.5 +0 1 +2.3 — O.J- —3.1 -l.S +0.1 "+6\ ) -o.c -O.i 50.4 48.4 50.6 48.8 54.8 51.8 51.6 54.0 52.0 49.7 49.2 52.4 52.3 51.5 54.6 57.0 57.6 58.2 58.2 56.3 57.6 55.4 54.6 56.4 54.3 55.9 53.6 56.1 54.2 b53.4 55.0 54.2 54.9 ) 53.2 i 55.5 I 50.3 -0.6 —2.5 —0.5 —1.6 '— 6"4 '—i'.h '+6!7 -0.9 —0.4 "+i'4 +0.2 +1.8 +0.1 +0.3 -1.2 -0.6 -0.6 —1.9 +2.2 —0.1 -3.0 +0.1 -1.9 -2!5 -0.4 —1.5 60.6 48.4 59.3 59.2 62.4 60.9 61.6 63.1 60.6 60.0 58.8 61.1 60.7 60.8 63.2 64.4 65.4 65.6 65.3 64.5 65.5 61.3 62.4 63.8 62.4 63.8 62.2 64.0 64.0 165.4 63.3 63.5 62.6 63.4 63.8 60.3 —2.8 PonflQ —2.5 pj^ilo —2.4 —2.9 "Riioln-illti — i.9 Snllivnn -2.6 Whitp Hall Wind<;or —2.2 —2.5 SOUTHERN DISTRICT. 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List of Cooperative Observers. Northern District. Stations. Observers. Stations. Observers. Aledo Wm. B. Frew J. C.James, Jr E J Yenerich . .... LaSalle Jos. H. Peltier Ashton Minonk O M Davison W.Holden J. H. Seaton Hugh R. Moffet Cambridge Chicago Morrison H.A.Maxwell Dakota Rev. G. W. Kerstetter Ottawa MissM M Harris Davenport, Iowa... Dixon . George Butterworth John AVest James Mrs. Eustace E. Shaw Edw. O. Welch ^Veather Bureau Riley Dwight Rockford H. C. Porter Dubuque, Iowa — Galva St Charles Dr. Wm.H. Bishop Edw. F. Sweetser Prof. F. U. White Streator Henry Dr F A Powell Sycamore Miss Edna J Davis Joliet Kistwaukee Knoxville F.M.Muhlig Geo. Stevens C.N.Butt Prof. F. E. Sanford M. N. Wertz TiskUwa Walnut Winnebago Yorkville Zion F. I. Smucker 0. C. Nussle Frank Osbom La Grange H A Grimwood Lanark Robert F. GiUogly Central District. Stations. ] Observers. j Stations. Observeis. Alexander Geo. H. Hall Ed. V.Bohl Rev. C. S. Adams Prof. H. N. Pearce R. 0. Purviance Jacob B. Dazey Dr. J. R. Lambert Prof. J. H. Coonradt R. C. Goodrich Geo. F. Kneeland Weather Bureau F. &C. Borgelt Ira L. Woodward S F Hoskinson Martinsville MorrisonviUe Palestine G. M. Daugherty J. D. Lowis Astoria Bement Duane Shaw Pana C.W.Sibley H. P Twvman Carlinville Paris Peoria Coatsburg Philo H A Burr Grafton Grio'B'Qvillp Robinson Rushville A. P. Wood worth Howard F Dvson Springfield Havana Staunton Wm F Schaefer Hillsboro Sullivan Tuscola Urbana C. A. Corbin TTnnnpsjtnn E W Lester Keokuk Iowa Weather Bureau Prof. J. G. Mosier Laharpe John S Campbell ■Warsaw W R Kirkbride Lincoln Prof. C. S. Oglevee White Hall Windsor Dr. R. A. Pritchett Loami H. C. Foster Hprbprt Rnsp ... Southern District. Stations. Observers. Stations. Observers. Albion B F Michols . Halfway McI>eansboro Mascoutah E. L Heam Benton Cairo . ...... F. H. Stamper Weather Bureau C. C.Judd Geo. Henrich Carlyle Wm. Rogan Frank A (JoUon Jr Mrs.H. M. Phillips Theo P Stelle Chester Mt. Vernon New Burnside Olney . . Cobden John Buck G. H. Knclzger Dr. L. W. Gordon Geo A Tromlv (Jeorge Harr's VMctor E. Phillips Duqiioin Equality St. Louis, Mo Sumner Tilden Fairfield O A Fyfle Flora J.S. Peak Dr Daniel Lawrence J.A.Caldwell Golconda Vernon M L Lansford M. S. Oudyn