GB 1225 .V5 fi5 1921 Copy 1 SPECIAL REPORT OF THE Vermont Water Resource Commission TO THE LEGISLATURE OF 1921 OF THE STATE OF VERMONT MADE IN ACCORDANCE WITH No. 328 OF THE ACTS OF 1919 Prepared in Co-operation with the United States Geological Survey C. H. PIERCE, District Engineer FEBRUARY, 1921 THE TUTTLE COMPANY. PubUshers MARBLE CITY PRESS RUTLAND, VT. SPECIAL REPORT Vermont Water Resource Commission TO THE LEGISLATURE OF 1921 OF THE STATE OF VERMONT MADE IN ACCORDANCE WITH No. 328 OF THE ACTS OF 1919 Prepared in Co-operation with the United States Geological Survey C. H. PIERCE. District Engineer FEBRUARY, 1921 THE TUTTLE COMPANY, PubUshers MARBLE CITY PRESS RUTLAND, VT. LIBRARY OF CONGRESS i RECEIVED I OCT 5 1922 I DOCUMENTS DIVi.>tOi. ! To t}i& Governor and General Assemhly of the State of Vermont : In accordance with the provisions of a joint resolution pass- ed at the biennial session of 1919, being No. 328 of the acts of that session, we have the honor to make the following report. WALTER A. BUTTON WM. R. WARNER ELI. H. PORTER Public Service Commission of Vermont H. M.McINTOSH State Engineer Digitized by the Internet Archive in 2011 with funding from The Library of Congress http://www.archive.org/details/specialreportofvOOverni Report of the Water Resource Commission The joint resolution hereinbefore referred to provided that the public ser-sdce ctomirdssion and the state engineer snould con- stitute a ctommission to investigate the water resources of the state now developed or capable of development and to suggest methods of conserving, developing, and utilizing the same. The commission was given authority to study the methods and poli- cies of the various persons and corporations in control of the water resources of the state with a view to increasing the service and benefits to be secured from them ; and was required to report to the next session of the General Assembly and to include in their report such recommendations and drafts of legislation as to them might seem expedient No appropriation wias made by the legislature for the pay- ment of any expense incident to the performance of the duties provided by the resolution. The amount of work laid out in the said resolution might easily call for the services of a large corps of engineers and ac- countants during the entire biennial period; but in view of the f!act that no provision was made for the payment of any such ex- penses the commission did not feel warranted in incurring them ; the result being that the commission has limited its efforts to the securing of such information only as could be obtained without extra expense to the state. THE CONSERVATION COMMSSION OF 1915 By No. 240 of the acts of 1915 provision was made for the appointment by the governor of three persons to constitute a con- servation commission to serve for two ye(ars without pay. The act provided for the payment of the actual expenses of the commission, for clerical and stenogiiaphic assistance not to exceed five hundred dollars annually, and authorized the em- ployment of expert engineering advice and service and to expend for that purpose not to exceed twenty-five hundred dollars for the biennial period. The commission was given general authority to investigate and determine desirable locations for storage reservoirs to store and hold flood water with a view to the prevention of damage by flood and the benefit of water powers developed and undeveloped, all of which appears by the act referred to, and were required to report to the next session of the General Assembly. 6 Pursuant to the provisions of this act Governor Chlarles W. Gates appointed as members of said commission former Lieuten- ant Governor Charles H. Stearns of Johnson, the present State Engineer H. M. Mcintosh of Burlington, and Mr. James A. Stacy of White River Junction. The commission so appointed performed its duties and made report to the General Assembly at the session of 1917. This report, published in a pamphlet of twenty-eight pages, contains much valuable general information and some particular information concerning the streams, lakes and ponds of Vermont, with nimierous maps and drawings. CO-OPERATION WITH UNITED STATES GEOLOGICAL SURVEY By No. 289 of the Acts of 1912 the General Assembly appro- priated twelve hundred dollars annually for ' ' determining the amount of water available on streams of this stiate, for investiga- ting the best methods of utilizing the same, and for providing the people of this state wtith such information relating thereto as will further industrial development." By section 2 of that act the governor wjas authorized to en- ter into a co-operative agreement with the director of the United Sllates geological survey for the purpose of making the investi- gation aforesaid. Section 3 of the act provided in w^hat manner the money should be expended in case such co-operative agree- ment was entered into and how it should be expended in case no such co-oper(ative agreement was made. Section 4 of the act provided for an annual report to the governor by the director of the United States geological survey. By No. 139 of the Acts of 1917 the Act of 1912 was amended so as to cast upon the state engineer instead of the governor the duty of co-operating with the director of the United States geological survey. The acts referred to are now found in General Laws, sec- tion 403 ; and since the said Act of 1912 became a law the sum of twelve hundred dollars has been made annually available for the purposes set forth therein. Pursuant to the provisions of that act and the amiendments thereto the state engineer entered into a co-operative agreement with the director of the United States geological survey; and, under that agreement, investigations of the streams, lakes and ponds, Avater sheds, reserA^oirs, opportunities for storage, water powers developed and undeveloped and other related subject matters, have been carried on and the results of those investiga- tions appear in reports which have been made from time to time and published at the government printing office at Washington. One of those reports is dated in 1917 and is entitled ''Water- Supply, Paper 424/' That report contains under the title of "Gazetteer of Streains" a general description of nearly or quite all the streams and bodies of water in the state arranged by names in alpha- betical order and covers seventy-seven pages of that report. It may be obtained from the superintendent of documents at the government printing office at Washington, D. C, for twenty -five cents. Prior to the co-operative arrangement between the state of V'ermont and the director of United States geological survey, gauging stations had been established under the authority of the last named government officer upon several of the principal streams in Vermont for the purpose of measuring the quantity of water flowing in those streams; and, since the establishment of co-operation between the general government in this state, that practice has continued until the present time and has re- suited in the accumulation of much valuable information as to the flow of water in the different streams at the various seasons of the year. Government investigations, the results of which appear in Water-Supply Paper 424 hereinbefore referred to, were in charge of C. H. Pierce, District Engineer, with headquarters at Boston. During the last biennial period this work has been contin- ued under the joint arrangement, Mr. Pierce co-operating with State Engineer Mcintosh, and the report of their work is here- inafter contained and made a part of this report. The work undertaken by the general government and the State of Vermont in co-operation during the last biennial period hias covered not only the measuring of the wiater in the streams in Vermont but has taken up the examination of the general features including the amount of water power at present in- stalled, the opportunitiesi for further development of water powers and for stonage basins, and certain other geological fea- tures relating to the White River basin, all of which information will be of great value to persons who may hereafter engage in the improvement of the water powers in that basin. Vermont is rich in small water powers on a large number of its rivers and at the outlet of its niunerous ponds and lakes ; but the problem of the future would seem to be to provide some plan by which the enormous quantity of water running to waste during high water periods may be impounded and made avail- able for the production of power during times of drouth. 8 The great advance in price of coal as fuel hjas made the use of power in this vicinity produced by that means prohibitive; and the increasing demand for power must be supplied from some other source. That source lies in the creation of storage reservoii^ which will serve the double purpose, of preventing damage by floods and storing water for use in the production of power. The advantage obtained by providing for ,an even, constant flow of water in the power-producing streams is well illustrated by the facts which appear upon pages 9 and 10 of the report of the conservation commission hereinbefore referred to as to the results in the Deerfield valle}^ Th^ere ,a storage reservoir has been completed with a capacity of 2,600,000,000 cubic feet, suf- ficient to hold back the entire rain fall of the Deerfleld river valley above that point. The water thus kept in storage is re- leased when needed and assures a constant flow in the stream below, relieving power producers of the necessity of building and maintaining expensive auxiliar}^ steam plants, which would otherwise be necessary to bridge over times of low water. Electric power is now being applied to a great viariety of uses and enters more and more into the daily activities of all lines of endeavor. It is well worth considering by the legislature what can be done to increase the efficiency and cheapen the cost of this powerful agency. For these reasons we recommend that the joint arrangement, which has existed be continued and that during the next biennial period information similar to that which is presented in this report as to the White River basin be procured respecting the basins of other streams in the state, carrying this investigation as far as possible within the limits of the appropriation for that purpose. As this work comes naturally within the province of the engineering department wie recommend that it be left as at present within the jurisdiction of the state engineer. PROGRESS OF STREAM GAGING IN VERMONT During the two-year period ending Sept. 30, 1920. Boston, November, 15, 1920. To iJie Honorable, The Governor of Vermont, State House, Montpelier, Yt. Dear Sir: The work of investigating the water resources of Vermont lias been carried on during the piast two years in co-operation with the State, the co-operating state official being M;r. H. M. Mcintosh, State Engineer. In addition to obtaining records of stream flow, an effort has been made to obtain data relative to use of the water, and this information has been secured for a considerable number of the water power developments. A knowledge of the exact location, size, and use of the power developments, together with information respecting addi- tional possibilities for developing power or increasing the power by means of storage, should be of value to the general public and also to state boards and commissions having to do with problems in valuation and rate making. It has not been considered practicable to include in this report all of the wlater power data that have been obtained, but the information has been compiled for the White River basin, and is transmitted herewith, together with the tables showing the flow of the rivers as measured at the gaging stations. The tables accompanying this report show the daily and monthly discharge at eleven gaging stations. The stations on Otter Creek at Middlebury, Dog River at Northfleld, and Pas- sumpsic River near St. Johnsbury have now been discontinued, and new stations established on "West River at Newfane, Mollys P>rook near Marshfield, Jail Branch of Winooski River at East Barre, and Second Branch of White River near North Randolph. All of the gaging stations now being maintained are well equipped and good records are being obtained. Respectfully submitted, C. H. PIERCE, District Engineer. 10 UNITED STATES GEOLOGICAL SURVEY IN CO-OPERATION WITH THE STATE OF VERMONT Records of Stream Flow for the Two- Year Period ending September 30, 1920 Lake Champlain drainage basin: Lake Champlain (gage heights) Otter Creek Winooski River Dog River Lamoille River Green River IVIissisquoi River Lake Memphremagog drainage basin : Clyde River Connecticut River drainage basin: Connecticut River Passumpsic River White River West River 11 Lake Ohamplain at Burlington, Vt. Location. — On south side of roadway leading to dock of Champlain Transportation Co., at foot of King St., Burlington. Records available. — ^May 1, 1907, to September 30, 1920. Gage. — Staff. Comparisons of gage readings indicate that zero of gage at Burlington is at practieally the same elevation as that of gage at Fort Montgomery, 92.5 feet above mean sea level. Gage read bv employee of the Chiamplain Transportation Co. Extremes of stage. — 1907-1920: Maximum stage recorded, 8.20 feet on April 7, 1913 ; minimum stage recorded, — 0.25 foot on December 4, 1908. Ice. — Lake Champlain does not usually close over in its wider portions until the latter part of Janu^iary. Occasionally the period of closure does not occur until February, and some- times only lasts for a few d(ays. At the northern end of the lake above the outlet the period of ice cover is usually from the middle of December to the middle of April. Accuracy. — Oage read to hundredths once a djay at irregular intervals. Allien the lake is rough, there is considerable wave action at the gage and readings at those times may not be exact. Co-operation. — Gage heights furnished through the courtesy of Mr. D. A. Lomis, general manager of the Champlain Trans- portation Co. 12 Daily gage height, in feet, of Lake Champlain at Burlington, Vt., for the years ending Sept. 30, 1919 and 1920. Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July A.ug. Sept. 1918-19 1 2.75 4.75 4.95 '4.'95 5.00 4.97 3.47 2.56 4.82 4.80 4.77 4.78 4.80 '4. '96 5.22 5.47 5.50 5.93 s.'so 5.76 'sies 5.82 ■4!85 4.79 4.74 4.60 3.10 3.05 2.96 2.92 2.88 i'.iQ 1 18 2 ■4:75 4.70 4.20 4.30 1 18 3 2.74 3.43 2.68 2.76 2.82 2.88 2.96 2.98 4 1.68 1.64 1 16 5 3.00 3.30 6 4.62 7 3.65 4.06 4.15 4.24 4.22 3.22 2.78 2.72 1.58 .... 8 4.80 4.72 4.60 ■4;35 4.30 4.12 5.70 5.74 5.67 5.45 5.38 5.25 "b'.hh 5.07 5.02 4.95 1 06 9 10 3.10 3.02 3.12 3.14 4.33 4.22 4.16 4.06 3.97 3.96 3.90 3.88 'siso 11 2.59 2.46 1.46 1.44 12 3.00 2.97 13 4.13 "s.'ss 1 40 14 4.42 6.50 6.58 6.60 6.65 6.67 6.70 6.60 6.58 2.38 2.33 '2!32 2.28 2.26 2.18 1.38 1.36 1.36 15 3.24 ■3;i4 3.20 3.37 3.46 3.70 3.87 1 52 16 4.10 4.02 4.22 "4. '30 4.67 5.03 5.23 5.28 4.33 4.43 4.38 ■3.75 3.72 ■2186 2.82 17 18 1.34 19 20 2.74 2.70 1.24 1.24 1.40 21 3.60 22 3.93 3.95 1 40 23 4.13 2.10 1.24 1.40 24 3.55 2.60 2.56 2.56 4.07 4.10 4.10 4.10 4.28 4.60 ■4!78 6.36 5.30 3.50 25 1.22 1.24 26 3.90 5.15 6.22 6.12 6.06 6.02 5.96 6.30 5.33 5.31 5.26 5.19 7.72 3.35 3.27 1.40 27 28 4.37 2.48 29 3.90 4.10 4.40 1.32 4.90 2.46 1.18 30 31 1919-20 1 4.33 4.30 3.22 3.30 3.26 3.50 3.16 4.75 4.70 4.60 4.50 4.40 '4!27 4.15 4.08 4.05 3.90 3.85 ■3:68 3.63 3.63 3.53 3.45 3.40 3.34 3.30 ■3;i4 3.10 3.04 2.98 ■2;82 2.80 1.88 1.80 2.78 2.75 1.30 2 1.64 3 1.38 1.56 1.72 1.83 1.86 2.77 2.82 2.90 3.10 3.15 3.20 ■3;25 ■ 6.45 7.60 7.60 7.50 7.40 7.28 7.12 '6!98 6.88 6.78 6.66 6.57 6.45 '6!26 6.15 5.97 5.86 5.77 5.68 "b'.'hZ 5.47 5.42 5.32 5.22 5.12 2.24 1.56 4 1.80 t 5 6 3.15 2.35 1.62 6.55 6.80 6.94 6.98 6.90 6.90 7.14 7.20 ■7:25 7.20 2.68 2.60 2.16 1.45 7:::::::::::::::::: 2.06 1.42 8... . 3.12 3.08 9 10 1.78 1.72 1.74 1.78 1.74 1.90 2.62 2.68 2.02 1.46 11 1.92 3.20 '2!i6 1.44 12 2.64 2.60 1.97 13 2.02 14 1.56 15 2.04 2.07 2.06 2.08 3.45 '3138 2.30 2.40 2.50 2.84 3.06 3.22 2.52 2.52 1.94 1.94 1.65 16 17 18 3.16 1.74 "\.m 1.58 19 1.98 2.52 1.90 20 2.12 2.96 1.60 21. . 2.49 2.49 2.50 22 3.40 3.50 3.65 4.00 4.42 4.82 7.22 7.30 7.42 7.60 7.55 7.55 ■7!70 1.72 1.76 23 24 2.19 2.20 "s.so 3.28 3.28 ■3;28 2.86 1.95 1.54 25 26 ■2;65 1.94 1.70 27 28 2.13 2.4£ 2.36 2.32 2.2c 2.26 1.52 ■29 30 2.16 2.65 5.85 5.98 6.2c 1.65 1.65 1.50 1.48 31 2.60 13 Otter Creek at Middlebury, Vt. Location. — At the railroad bridge about half a mile south of the railroad station at Middlebury, Addison County, 3V2 miles below the mouth of Middlebury River, and 3^/^ miles above mouth of New Haven liiver. Draiyiage area. — ^615 square miles. Records availaUc—ApTil 1, 1903, to May 1, 1907, and Oc- tober 5, 1910, to January 31, 1920. Gage. — Chain; read by N. A. Brooks. DiscJiarge measurements. — Made from a boat just below railroad bridge, at the stone-arch highway bridge just above the dam, or by wading. Channel and control. — Channel deep; current sluggish for several miles above the station. Control for low stages is gravel and boulder rips about 800 feet below gage, and is somewhat shifting ; control at high stages is near the dam 800 feet farther downstream. Extremes of discharge. —1903-1907 and 1910-1920: Maxi- mum stage recorded 21.07 feet March 30, 1913 (lapproximate discharge from extension of rating curve, about 8,000 second- feet) ; minimum open-water stage recorded, 11.45 feet Septem- ber 15, 1913 (discharge 138 second-feet). A somewhat lower dischjarge has possibly occurred at various times when the stage- discharge relation was affected by ice. Ice. — Ice usually forms to a considerable thickness at the gage and occasionally at the control, affecting the stage-dis- charge relation during most winters. Regulation. — Probably little if any effect from power de- velopments above the station. Considerable storage has been developed on tributaries near the headAvaters. Accuracy. — Stage-discharge relation has changed slightly at various times. Rating curs^es fairly well defined for periods used. Chain gage read to quarter-tenths once daily. Daily discharge ascertained by applying rating table to daily gag^: heights. Results fair. 14 Discharge measurements of Otter Creek at Middlebury, Vt., during the two-year period ending September 30, 1920. Date MADE BY Gage Height Discharge 1919 Jan. Feb. 3 4 27 28 28 June 26 27 27 29 Sept. 15 1920 Jan. 20 R. H. Suttie R. H. Suttie M. R. Stackpole, M. R. Stackpole M. R. Stackpole, R. H. Suttie R. H. Suttie . . . . R. H. Suttie R. H. Suttie 29R.H. Suttie.... M. R. Stackpole. H.S.Price Feet 14.11 14.17 12.38 12.44 12.42 12.15 12.22 12.22 12.84 12.80 14.55 (a) 12.50 Sec.-ft. 1,660 1,720 531 553 541 355 377 390 737 700 2,010 283 (a) Stage-discharge relation affected by ice. 15 Daily discharge, in second-feet, of Otter Creek at Middlebury, Vt., for the years ending Sept. 30, 1919 and 1920. Day Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept, 1918-19 1 1,440 970 765 830 735 1,270 1,970 1,700 1,350 1,040 900 765 705 585 705 615 615 500 615 585 530 645 735 675 615 555 615 705 705 675 2,690 475 450 502 530 530 475 830 900 735 645 645 705 645 585 557 530 830 1,440 1,270 970 900 900 970 900 765 645 705 1,040 1,270 1,190 1,110 2,420 2,150 1,610 1,360 1,130 1,060 930 870 840 780 690 690 690 660 635 635 635 585 2,510 2,510 2,420 2,150 1,880 1,440 1,200 930 780 750 720 990 1,440 1,610 1,610 1,610 1,440 1,790 1,970 1,790 1,610 1,440 1,270 1,350 2,240 2,330 2,240 2,150 1,880 1,610 1,350 1,110 970 900 1,190 1,270 1,190 1,040 1,040 1,040 1,110 1,610 870 780 690 750 780 660 780 635 660 750 635 635 635 660 1,610 1,700 1,610 930 1,610 870 870 810 1.200 1,610 1,530 1,970 1,880 1,700 1,610 1,130 1,280 2,060 2,150 2,150 1,790 1,440 1,520 1,040 1,040 1,040 970 2,150 1,790 1,270 1,520 1,610 900 840 820 760 700 640 580 580 560 540 420 420 400 400 380 380 1,280 1,440 1,700 1,700 1,790 1,790 1,610 1,200 1,130 1,280 1,280 1,700 1,130 810 810 870 810 810 810 810 720 720 690 1,280 1,790 1,610 1,530 1,280 1,130 1,060 930 370 330 330 250 220 220 250 250 290 290 290 220 250 250 290 290 250 330 250 290 290 290 250 290 290 220 290 290 250 250 250 930 840 720 720 720 690 660 660 560 510 535 585 535 510 485 485 440 485 510 485 485 485 440 415 485 535 585 585 • 2,420 2,240 2,240 2,330 2,420 2,060 1,970 1,440 1,360 1,790 1,970 1,790 1,520 1.190 900 830 830 1,040 1,700 1,700 1,790 1.880 1.790 1,610 1,360 1,190 1,190 1,970 2,150 2,330 2,150 2,150 2,150 2,150 1,880 1,790 1,970 2,330 2,420 2.330 2.420 2,330 3,050 2,870 2,780 2,870 2,780 2,690 2,690 2.510 2,420 2,2i0 2,150 1.880 1.520 1.270 1.190 1,040 970 970 1,040 970 900 1,110 1.110 1,040 1,190 1.110 1,040 1,040 900 765 765 830 830 735 645 675 1,270 1,520 1.440 1,360 970 2,060 2,150 2,150 2,150 1,970 1,700 1,270 970 765 585 530 475 425 375 375 425 425 425 475 500 530 400 375 350 270 425 530 615 585 475 425 270 400 400 375 350 765 735 585 475 425 375 352 290 224 250 375 375 330 352 425 425 . 330 375 375 330 330 330 310 270 290 425 530 475 450 450 3^2 375 425 375 352 375 352 290 270 330 400 375 425 425 330 290 330 352 352 375 330 290 330 425 425 475 475 425 425 400 450 530 500 475 475 375 2 400 3 425 4 475 5 475 6 530 7 475 8 352 9 675 10 1,110 11 970 12 352 13 2,510 14 2,330 15 2,150 16 1,970 17 1,610 18 1,110 19 830 20 645 21 585 22 550 23 550 24 645 25 735 26 735 27 705 28 615 29 500 30 500 31 1919-20 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 16 Monthly discharge of Otter Creek at Middlebury, Vt., for the years ending September 30, 1919 and 1920. (Drainage area, 615 square miles.) DISCHARGE IN SECOND-FEET RUN-OFF MONTH Maximum Minimum Mean Per square mile Depth in in- ches on drainage area 1918-19 October '. . . November December January February March 2,690 2,510 1,970 1,790 930 2,420 3,050 2,150 765 530 530 2,510 500 585 635 690 415 830 970 645 270 224 290 352 897 1,220 1,090 1,210 574 1,710 2,100 1,210 462 370 389 863 1.46 1.98 1.77 1.97 .933 2.78 3.41 1.97 .751 .602 .633 1.40 1.68 2.21 2.04 2.27 .97 3.20 April 3.81 May 2.27 June .84 July .69 August .73 September 1.56 The year 1919-20 October November December January 3,050 1,440 2,330 2,150 370 224 450 900 380 . 220 1,010 795 1,510 1,060 273 1.64 1.29 2.46 1.72 .444 22.27 1.49 2.74 1.98 .51 17 WiNOOSKi River at Montpelier, Vt. Locatioyi. — One mile downstream from the Central Vermont Railway station in Montpelier, Washington Connty, about three- eights mile above mouth of Dog River, and I14 miles below mouth of Worcester Branch. Drainage area. — 420 square miles. Records availahle.—Msiy 19, 1909, to September 30, 1920. Gage. — Gurley seven-day water-stage recorder on right bank, installed July 4, 1914; gage heights referred to datum by means of a hook gjage inside the well; an outside staff gage is used for auxiliary readings. Recorder inspected by L. D. Smith. Discharge measurements. — Made from a cable or by wading. CMnnel and control. — Chjannel deep and fairly uniform in section at the gage; control is formed by sharply defined rock outcrop about 500 feet below gage. Extremes of discJiarge. — 1909-1920 : Maximum stage deter- mined by levelling from flood marks preserved on building near present gage, 17.31 feet, April 7, 1912 (discharge not deter- mined) ; minimum stage fro]in ^vater-stage recorder 1914-1918. 2.77 feet, August 13, 1914, and October 24, 1915 (discharge, 19 second-feet). Ice. — Stage-discharge relation affected by ice during* the winter months. Discharge ascertained by means of gage heights, current -meter measurements, observer's notes, and climatic records. Regulation. — Operation of power plants on main stream and tributaries above station cause diurnal fluctuations in stage. Accuracy. — Stage-discharge relation practically permanent except when affected by ice. Rating curve well defined between between 30 and 5,000 second-feet. Operation of water-stage recorder satisfactory throughout the year. Daily discharge de- termined by application of rating table to mean daily gage heights, with corrections for effect of ice during winter months. 18 Discharge measurements of Winooski River at Montpelier, Vt., during the two-year period ending September 30, 1920. DATE MADE BY Discharge 1919! Jan. 23 H. W. Fear Mar. 1 M. R. Stackpole. June 25 R. H. Suttie.... Nov. 21 1920 Jan. 15 H.S.Price, H.S.Price, Sec.-ft. 420 397 179 452 276 (a) Stage-discharge relation affected by ice. li) Daily discharge in second-feet of Winooski River at Montpelier, Vt., for the years ending Sept. 30, 1919 and 1920 Day Oct. Nov. Dec Jan. Feb. Mar. Apr, May June July Aug. Sept. 1918-19 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 1919-20 520 420 870 720 1,260 6,600 3,600 1,600 1,160 950 860 720 660 760 600 550 510 1,240 950 730 1,360 970 730 640 580 1,000 800 730 1, 6,000 108 126 1,680 937 818 1,440 1,380 650 40 644 1,110 825 566 410 360 460 660 420 400 385 330 776 572 415 385 365 500 506 500 385 2,180 1,540 1,220 1,140 1,220 1,060 970 890 560 970 720 650 640 640 620 530 490 560 550 550 940 500 780 460 440 620 1 670 640 610 1,240 3,900 1,680 1,240 1,080 900 830 740 600 600 630 970 940 1,460 909 626 500 671 755 727 734 664 602 650 1,000 2,580 1,460 979 706 685 678 671 584 518 566 874 769 590 554 554 488 470 1.410 1,280 790 660 640 610 490 510 1,680 1,340 1,380 1,240 860 690 550 465 430 1,040 664 470 506 548 494 435 488 590 1,180 902 727 699 1,340 965 692 572 520 480 380 400 400 380 370 360 390 360 340 380 360 360 630 900 830 740 630 540 510 510 500 480 470 470 470 470 440 420 420 400 370 370 340 340 340 860 930 750 590 500 380 320 320 300 320 310 310 290 290 280 270 300 310 280 260 250 240 220 220 230 220 220 220 220 220 220 230 220 220 220 230 230 230 220 300 280 390 320 280 270 220 220 280 260 230 210 210 220 210 220 240 240 220 220 210 180 220 220 230 260 240 660 1,700 1,340 1,000 1,550 1,720 1, 860 770 1,340 1,040 780 710 700 640 560 465 800 1,200 1,540 2,550 2,350 1,440 1,440 1,420 1,440 1,760 8,000 3,400 2,300 1,780 1,460 1,260 1,140 1,140 1,500 900 1,140 1,080 980 1,260 2,400 1,140 3,350 880 3,000 2,150 1,840 1,980 5,900 2,600 2,100 1,720 1,500 1,820 1,760 1,480 1,380 1,300 1,140 1,040 1,000 1,180 1,040 920 870 1,040 1,060 230 210 240 210 220 230 210 230 230 210 200 230 230 220 220 190 200 240 240 240 240 230 240 200 210 220 210 200 200 200 195 210 190 200 300 330 380 360 220 32 370 1,650 1,250 1,000 2,060 2,670 3,120 2.430 2,850 3,290 1,790 1,440 1,200 1,160 1,050 1,200 1,150 4,500 5.020 2,330 800 3,910 1,200 2,990 1,300 2,420 840 2,130 720 2,220 560 2,410 " 4,810 4,070 4,630 2,660 1,920 2,700 3,540 3,460 2,650 460 540 1,350 2,600 7,890 7,640 5,090 3,430 3,030 2,370 910 720 640 620 670 600 520 450 400 650 1,700 1,020 740 620 2,250 4,000 1,900 1,: 1,180 1,000 830 690 610 530 1,970 1,700 1,540 1,460 1,250 1,130 1,080 1,030 1,240 902 790 706 671 755 632 596 542 494 476 506 1,100 839 638 584 482 405 355 292 284 268 450 420 390 350 320 290 340 330 365 540 370 305 230 225 260 315 540 315 250 295 290 220 230 200 180 180 300 425 240 230 272 244 268 228 204 272 365 300 234 210 175 170 126 180 148 225 213 204 272 225 231 276 210 195 165 143 84 153 145 506 190 180 172 131 154 120 174 194 160 142 150 134 80 130 150 158 172 150 118 61 124 106 128 150 142 130 120 178 96 112 126 114 494 276 312 560 482 304 225 405 300 222 178 204 189 244 455 276 186 145 320 518 280 276 280 240 186 198 180 168 160 400 320 110 116 93 108 110 132 188 170 122 67 118 188 142 124 150 92 62 132 580 340 120 240 930 1,730 560 345 114 94 90 94 100 78 126 118 102 88 06 66 130 124 140 146 130 114 54 198 204 168 155 131 120 120 49 131 120 470 530 350 560 692 930 560 300 237 201 165 160 276 210 195 143 136 117 90 160 141 275 250 210 210 190 156 190 230 235 225 260 230 136 154 112 237 264 195 145 108 115 210 536 350 268 410 320 1,100 900 650 435 455 445 965 560 390 325 284 260 200 180 220 280 370 600 20 Monthly discharge of Winooski River at Montpelier, Vt., for the years ending September 30, 1919 and 1920. (Drainage area, 420 square miles) DISCHARGE IN SECOND-FEET RUN-OFF MONTH Maximum Minimum Mean Per square mile Depth in in- ches on drainage area 1918-19 October November December January February March 6,000 3,900 1,680 930 390 8,000 3,350 2,250 450 194 188 1,730 420 600 430 320 180 465 870 400 180 61 54 62 1,320 1,070 751 524 246 1,560 1,740 1,030 313 139 112 293 3.14 2.55 1.79 1.25 .586 3.71 4.14 2.45 .745 .331 .267 .698 3.62 2.84 2.06 1.44 .61 4 28 April. . .... 4 62 May 2 82 June . 83 July 38 August 31 September .78 1 The year... 1919-20 October November December January February March 8,000 1,680 2,580 1,340 320 240 7,890 54 108 470 340 220 190 190 761 625 815 574 252 219 1,520 2,760 831 221 290 259 391 1.81 1.49 1.94 1.37 .600 .521 3.62 6.57 1.98 .526 .690 .617 .931 24.59 1.72 2.16 1.58 .69 .56 4.17 April. . .* May : . . 5,020i 1,150 1,9701 268 506 84 560 145 930 49 1,100| 108 7.33 2.28 June .59 July .80 August .71 September 1.04 The year. . . 7,890 49 729 1.74 23.63 1 21 Dog River at Northfield, Vt. Location. — At highway bridge near Norwich University campus in Northfield, Washington County. Union Brook joins Dog River at a short distance below station. Drainage area. — 47 square miles. Records available.— May 14, 1909, to September 30, 1920. Records from May 14, 1909, to August 22, 1910, obtained at lower highway bridge; those from August 23., 1910, to date, at present location. Gage. — Inclined staff on left bank read by Florence C. Doyle. Di&cJiarge measurements. — Made from highway bridge or by wading. Channel and control. — Channel composed of gravel and al- luvial deposits; subject to slight shifts. Banks overflow at high Extremes of discJiarge. — 1910-1920: Maximum stage re- corded at present site, 8.5 feet, Mlareh 25, 1913 (discharge 3,400 second-feet) ; minimum stage recorded, 0.60 foot, September 10 and 11, 1913 (discharge, 3,0 second-feet). At the lower gage, 1909-10, flow was practically zero at various times when water was held back by dam. Ice. — River usually freezes over, and the stage-discharge relation is slightly affected by ice during some winters; proba- bly not affected by ice during winter of 1918-19 or 1919-20. Accuracy. — Stage-discharge relation changed slightly dur- ing the year and two rating curves were used. Rating curves well cleflned below 600 second-feet. Gage read to quarter- tenths daily except during winter, when it was read once daily. Daily discharge ascertained by applying rating table to mean daily gage heights. Results good for discharge below 600 sec- ond-feet; results somewhat uncertain for high stages as banks overflow at a discharge of about 2,000 second-feet. S2 Discharge measurements of Dog River at Northfield, Vt., during the two-year period ending September 30, 1920. DATE MADE BY Gage Height Discharge 1919 Jan. 23 Mar. 1 June 25 1920 Jan. 16 Aug Aug H. W. Fear M. R. Stackpole. R. H. Suttie.... 20 J 20 J H. S. Price. . L. Lamson. L. Lamson. Feet 1.60 2.46 1.41 1.47 1.57 1.67 Sec.-ft. 53 150 20.8 25.8 12.3 25.5 23 Daily discharge, in second-feet, of Dog River at Northfield, Vt., for the years ending Sept. 30. 1919 and 1920 DAY Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1918-19 1 70 62 108 79 130 527 266 164 135 108 104 92 90 85 75 69 63 138 90 86 148 119 90 79 78 90 85 75 75 130 471 17 18 186 109 '77 80 66 52 52 39 49 42 39 35 35 42 83 56 55 55 56 91 91 56 48 54 63 88 83 56 78 257 192 169 181 155 132 121 121 106 107 104 94 86 80 79 73 69 119 700 268 205 172 153 138 124 125 122 104 181 125 84 75 67 65 88 71 92 85 77 78 84 153 363 172 141 119 116 106 ioo 77 75 85 132 94 91 88 91 75 77 260 107 116 107 96 86 90 86 86 80 74 74 68 63 80 249 141 93 104 74 80 78 80 270 245 194 158 125 107 110 114 119 157 125 109 84 65 67 84 83 106 178 114 85 180 228 129 91 77 71 65 65 63 59 65 59 59 49 40 40 44 44 40 125 155 130 110 107 104 100 93 96 100 96 93 100 96 90 90 93 80 68 66 58 47 49 58 86 80 It 56 49 54 38 40 40 40 35 34 32 32 34 34 35 30 30 30 27 27 30 27 30 27 24 22 20 20 22 20 26 24 2.4 22 22 56 51 56 51 49 42 38 45 51 58 49 45 40 38 32 36 40 36 36 32 30 24 28 157 130 109 130 228 217 196 161 143 161 136 119 109 153 139 67 20 91 106 242 417 310 217 256 21£ 184 194 404 417 513 43C 35.C 297 377 404 363 310 260 242 310 284 234 207 215 178 161 157 148 141 120 114 125 122 284 336 272 256 363 3.36 249 256 242 207 192 180 1,310 404 390 1,540 830 350 3-36 363 431 640 541 485 417 260 284 284 284 272 104 172 122 129 148 125 124 108 97 90 106 103 85 76 71 65 109 230 137 109 114 541 444 377 272 225 200 161 132 106 91 260 260 238 228 176 176 152 140 160 140 128 116 114 132 107 98 92 80 73 76 107 150 116 98 95 82 73 65 59 53 47 9C 88 76 65 221 61 64 56 84 77 56 48 48 49 48 42 37 35 29 34 34 26 24 26 21 20 65 40 34 26 41 40 41 30 43 64 56 47 41 30 28 27 23 17 30 82 70 59 77 48 61 56 41 35 43 28 23 23 41 28 21 19 18 16 15 21 24 19 15 15 16 14 14 14 17 16 15 14 13 11 14 20 19 15 14 13 12 13 12 12 10 35 25 79 64 56 43 25 51 41 30 20 17 41 34 53 27 18 14 60 53 34 30 23 23 20 14 10 10 8 if 14 S s 7 7 IS IS IS X4 11 8 7 8 9 13 14 9 9 13 14 12 10 9 12 15 18 15 13 12 11 14 25 23 It 14 10 7 6 4 11 90 34 27 16 38 28 23 17 14 12 8 11 18 12 8 9 14 14 14 13 14 14 2 15 3 15 4 14 5 11 6 10 7 10 8 9 9 39 10 23 11 21 12 53 13 196 14 40 15 33 16 27 •17 23 18 19 19 16 20 18 21 19 22. 21 23 23 24 28| 249 24 242 24 238 21 25 33 26 29 27 26 32 20 19 24 22 20 20 24 24 26 24 22 20 22 22 26 27 24 20 22 24 24 26 26 27 24 20 19 20 17 390 2,360 805 527 323 19 20 20 19 24 44 40 32 35 40 42 88 1,630 740 880 260 990 527 390 310 228 196 238 260 272 640 1,050 880 585 499 349 26 28 23 29 19 30 18 31 1919-20 1 35 2 14 3 8 4 8 5 9 6 14 7 35 8 14 9 12 10 16 11 36 12 53 13 116 14 64 15 34 16 30 17 ..... 27 18 20 19 47 20 28 21 23 22 20 23 27 24 18 25 13 26 16 27 13 28 14 29 14 30 79 31 24 Monthly discharge of Dog River at Northfield, Vt., for the years ending September 30, 1919 and 1920. (Drainage area, 47 square miles.) DISCHARGE IN SECOND FEET RUN-OFF MONTH Maximum 1 Minimum Mean Per square mile Depth in in- ches on drainage area 1918-19 October November December January February March 527 700 270 155 58 2,360 513 541 221 24 18 196 62 69 63 47 24 20 114 65 20 10 7 9 128 155 115 86.1 39.2 287 258 160 54.1 15.5 11.7 27.9 2.72 3.30 2.45 1.83 .834 6.11 5.49 3.40 1.15 .330 .249 .594 3.14 3.68 2.82 2.11 .87 7 04 April 6 12 May 3 92 June July 1.28 .38 August .29 September .66 The year. . . 1919-20 October November December January February March 2,360 186 363 228 40 27 1,630 1,540 260 82 79 90 116 7 17 65 40 20 17 19 180 47 17 8 4 8 112 62.9 109 87.9 29.0 22.6 366 420 126 42.4 32.8 18.2 28.6 2.38 1.34 2.32 1.87 .617 .481 7.79 8.94 2.68 .902 .698 .387 .609 32.31 1.54 2.59 2.16 .71 .52 8.98 April 9.97 May 3.09 June 1.01 July .80 August .45 September .68 The year... 1,630 4 112 2.38 32.50 25 Lamoille River at C^^dys Falls, Vt. Location. — ^About one-fourth mile below plant of Morris- ville Electric Light and Power Co., at what was formerly known as Cadys Fialls, 2 miles downstream from village of Morrisville, Lamoille County. Drainage area. — ^280 square miles. Records availatle. — September 4, 1913, to September 30, 1920. Gages. — Friez water-stage recorder in gage house on right bank one-fourth mile below highway bridge at Cadys Falls. Gage heights are referred to gage datum by means of a hook gage inside well; an outside staff gage is used for auxiliary readings.' Recorder inspected by N. E. Clobleigh. Discharge measurements. — Made from a cable or by wading. Channel and control. — Channel smooth gravel ; well defined gravel control 500 feet downstream from gage. Extremes of discharge. — 1913-1920. Maximum stage record- ed, 10.77 feet, April 12, 1919 (discharge from extension of rat- ing curve 7,530 second-feet) ; minimum stage recorded, 1.39 feet, August 6, 1919 (discharge from extension of rating curve, 5 second-feet) (water held back by dam). Ice. — River freezes over during extremely cold weather; stage- discharge relation slightly affected by ice. Discharge de- termined from gage heights! with corrections for backwater based oni current-meter meiasurements, observer's notes, and climatic records. Accuracy. — Stage-discharge relation practically permanent, except wken affected by ice. Rating curve well defined. Oper- ation of water-stage recorder satisfactory throughout year ex- cept for cloek stopping frequently during January, February and March. Daily discharge ascertained by discharge integrator. Results good. 26 Discharge measurements of Lamoille River at Cadys Falls, Vt., during the two-year period ending September 30, 1920. DATE MADE BY Gage Height Discharge 1919 Jan. 5 5 20 H R. H. Suttie R. H. Suttie W. Fear M. R. Stackpole. Feb. 24 1920 Feb. 20H. S.Price Feet 2.93 2.91 2.64 2.47 (a) 2.75 Sec.-ft. 359 344 277 219 210 (a) Stage-discharge relation affected by ice. 27 Daily discharge, in second-feet, of Lamoille River at Cadys Falls, Vt., for the years ending Sept. 30, 1919 and 1920. DAY Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. 1918-19 1. 435 370 360 370 560 4,000 3,250 1,060 485 640 630 305 355 490 430 400 365 620 680 560 1,100 600 450 450 470 500 600 460 440 1,420 4,900 150 154 430 340 250 1,140 1,140 500 335 610 2,300 1,100 610 465 370 '370 540 450 320 300 310 900 620 400 360 335 460 490 500 390 1 520 1,840 1,060 790 700 700 650 550 550 600 700 910 190 170 435 430 400 400 740 1,500 1,080 790 690 610 700 550 370 350 365 650 950 1,980 1,000 700 560 580 630 600 580 540 490 540 800 2,400 1,360 850 590 570 550 540 480 400 455 930 760 570 510 510 340 360 910 365 325 385 435 410 330 325 315 375 320 270 300 325 485 1,500 1,050 660 480 390 350 -3^0 395 1,600 1,180 840 770 570 500 440 420 335 790 520 390 320 370 300 295 340 340 720 570 500 530 930 620 475 345 270 255 210 170 235 220 200 132 182 182 100 224 205 211 440 670 640 520 440 400 400 370 340 280 260 260 260 260 240 260 255 290 300 295 280 280 290 530 720 500 460 400 400 400 350 196 196 185 112 205 245 216 216 162 140 U2 172 205 205 200 200 195 126 195 220 205 172 172 195 85 165 140 126 126 140 126 300 350 184 155 150 150 140 300 250 240 190 190 220 190 190 210 230 190 190 200 210 220 240 250 275 260 240 275 72 132 172 165 155 172 112 52 172 172 165 155 140 112 52 126 135 140 140 135 112 85 140 185 225 230 235 205 112 240 600 550 500 700 700 500 480 430 680 600 480 520 550 480 355 340 410 580 830 1,760 1,840 1,040 920 950 1,040 1,460 3,550 2,050 1,460 1,100 245 240 250 240 210 270 310 290 270 235 310 340 1,000 1,050 930 770 1,200 1,140 1,120 830 530 485 620 1,260 1,880 3,900 550 3,000 2,250 1,960 1 520 880 720 690 640 740 1,340 2,700 2,450 1,900 1,420 1,940 5,600 2,250 1,700 1,340 1,200 1,600 1,480 1,220 1,000 1,140 730 770 720 880 700 650 690 770 840 1,240 1,660 2,150 1,800 1,900 2,500 1,300 980 770 700 750 770 3,000 3,500 1,760 2,850 2,150 1,880 1,580 1,860 1,860 2,800 2,650 3,500 2,150 1,350 1,200 2,150 2,350 1,980 650 790 760 670 1,060 920 660 700 560 450 415 435 390 345 315 290 355 1,060 740 500 400 910 1.880 1,480 1,000 1,080 770 440 435 465 380 1,400 1,170 1,060 990 820 740 730 730 840 830 630 560 540 480 370 300 300 300 295 270 255 740 630 520 450 375 320 210 194 184 190 235 235 230 154 150 220 330 290 260 345 270 215 185 168 198 580 880 445 275 360 300 200 180 166 154 150 235 300 215 176 184 174 170 174 166 60 104 142 172 176 154 136 60 132 150 150 156 130 156 73 154 160 174 170 162 150 70 134 152 150 146 154 138 100 128 118 152 138 126 122 130 114 63 124 120 134 124 124 124 85 126 130 104 150 130 172 54 110 106 104 108 152 150 142 60 154 154 138 280 205 158 96 140 132 132 132 130 140 66 142 330 278 205 168 150 140 148 136 124 110 140 162 96 91 40 52 148 2 136 3...-^ 124 4. 19fi 5 65i 118 6 69 110 7 80 69 90 52 110 100 98 110 98 84 40 104 104 104 106 112 100 51 106 120 82 94 110 120 112 124 120 108 90 100 88 93 33 86 100 182 180 156 580 760 340 265 230 210 220 188 92 275 225 154 160 186 190 85 150 150 75 8 136 9 160 10 170 11 152 12 460 13 790 14 350 15 220 16 184 17. 162 18 154 19. . . 146 20 130 21. 112 22 170 23 285 24 190 25 188 26 235 27 190 28. •'142 29 156 30 160 31 1919-20 1 180 2 . 230 3 210 4 175 5 95 6 120 7 162 8 260 9. 215 10 190 11 172 12. . 112 13 330 14 570 15 .... 450 16 380 17. 440 18 450 19. 700 20 440 21 350 22 265 23. . . 275 24 220 25 195 26 120 27 200 28 196 29 265 30 :: 560 31 28 Monthly discharge of Lamoille River at Cadys Falls, Vt., for the years ending September 30, 1919 and 1920. (Drainage area, 280 square miles) DISCHARGE IN SECOND-FEET RUN-OFF MONTH Maximum Minimum Mean Per square mile Depth in in- ches on drainage area 1918-19 October November December January February March 4,900 1,840 1,600 670 350 3,550 5,600 1,880 880 154 120 460 305 170 270 240 140 240 640 290 150 54 40 75 895 681 541 380 221 893 1,360 687 270 121 89.3 196 3.20 2.43 1.93 1.36 .789 3.19 4.86 2.45 .964 .432 .319 .700 3.69 2.71 2.22 1.57 .82 3.68 April. 5 42 May 2.82 June 1.08 July .50 August .37 September .78 *The year . . . 1919-20 October November December January February March 5,600 2,300 2,400 930 245 235 3,900 3,500 1,400 184 330 760 700 40 150 340 100 85 52 210 700 184 60 60 33 95 5,290 586 736 360 173 145 942 1,900 562 143 155 191 284 1.89 2.09 2.63 1.28 .618 .518 3.36 6.79 2.00 .511 .554 .682 1.01 25:66 2.41 2.93 1.48 .71 .56 3.87 April 7.58 May 2.30 June .57 July .64 August .79 September 1.13 The year... 3,900 33 514 1.84 24.97 29 Green River at Garfield, Vt. Location. — ^At site of old dam above highway bridge at Gar- field village, town of Hyde Park, Lamoille Oonnty. Green River is tributary to Lamoille River about 4 miles east of Morrisville. Drainage area. — 20 square miles (approximate). Records available. — January 3, 1915, to September 30, 1920. Gage. — Inclined staff on left bank in pool back of weir; read by P. M. Trescott, DiscJiarge measurements. — Standard sharp-crested weir of compound section ; length of crest at gage height 0.00 is 9.0 feet ; at gage height 0.83 foot, length of crest is increased 11.17 feet. Current-meter measurements made at foot-bridge about one-half mile downstream from weir, and at old bridge about one-half mile above weir. Channel and control. — ^A pool of considerlable size is formed in the old mill pond back of the weir; at ordinary stages the velocity of approach to the weir is very small. Some water leaks around the weir in the old tail-race on left bank. Extremes of discharge. — 1915-1920: Maximum stage (de- termined from high water marks). 4.63 feet on April 12, 1919 (approximate discharge from extension of rating curve, 710 sec- ond-feet) ; minimum stage recorded, 0.20 foot August 8 and 9, 1919 (discharge 2.7 second-feet). Ice. — Weir and weir crest kept clear of ice during winter; stage-discharge relation not affected by ice. Regulation. — An old timber dam about 2 miles • upstream affects flow to some extent. The dam leaks by an amiount some- what greater than the low-Avater flow. During prolonged low stages the surface of wtater in pond (103 acres) falls below crest of dam; subsequent increased flow into pond is retained until water again flows over crest, when the increased flow is apparent at gaging station. Accuracy. — Stage-discharge relation practidally permanent. Rating curve based on weir formula, Q = 3.33 LH^/s with cor- rections determined from current-mieter measurements, and with logarithmic extension above gage height 1.90 feet. Gage read twice daily to hundredths. Daily discharge ascertained by ap- plying rating table to mean daily gage heights. Results are fifood below 130 second-feet; at the higher stages the weir is flooded and results are somewhat uncertain. 30 Discharge measurements of Green River at Garfield, Vt., during the two-year period ending September 30, 1920. DATE MADE BY Gage Height Discharge 1919 June 21 (a) R. H. Suttie. 21, (b) R. H. Suttie. 1920 I Aug. 16[(a) J. L. Lamson 16|(b) J. L. Lamson Sec.-ft. 23.7 23.6 20.7 18.6 (a) Made at old bridge about one-half mile above gage. (b) Made at section just above Taylor Brook, about one-half mile below 31 Daily discharge, in second-feet, of Green River at Garfield, Vt., for the years «nding Sept. 30, 1919 and 1920 DAY Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. 40 170 39 23 14 14 61 56 24 14 6.6 82 90 33 30 14 13 50 64 21 13 6.3 29 66 28 30 14 12 39 61 19 12 6.0 28 51 26 28 14 12 36 55 18 12 6.0 37 47 25 27 13 15 38 69 16 11 5.7 110 43 22 24 13 14 50 69 16 12 9.3 253 38 22 22 12 14 102 52 46 12 7.1 101 37 21 21 12 13 164 46 52 11 6.6 54 35 20 20 12 16 145 38 36 11 6.(; 44 38 18 18 12 20 130 32 35 11 5.7 37 53 16 16 11 18 135 30 27 10 5.7 32 40 17 17 11 19 610 28 24 10 5.5 29 34 17 16 11 23 246 26 20 10 6.2 28 31 21 16 10 25 169 24 19 9.3 5.2 27 28 40 15 12 22 127 21 21 10 6.0 25 26 54 16 12 20 104 19 35 13 5.5 23 25 37 16 11 18 107 29 99 9.3 4 9 34 43 29 16 10 20 126 71 61 9.C 4.9 33 89 27 16 11 21 103 56 34 8.7 6,6 34 139 25 15 11 26 93 38 38 8.4 5.5 72 70 23 15 12 44 93 31 24 8.7 4.9 70 51 25 14 11 67 77 47 19 9.3 5.2 46 44 65 14 11 74 67 148 17 8.4 4 7 36 42 127 20 11 63 60 88 16 8.0 6.3 32 34 80 14 11 62 60 104 15 7.7 5.2 37 27 54 19 10 62 52 130 14 7.4 4.9 49 24 37 19 10 81 46 76 23 7.7 5 2 43 23 36 18 n 141 50 50 16 7.1 9.3 35 31 32 16 152 59 39 14 9.0 9 3 112 43 27 16 107 71 34 14 8.0 9.0 352 24 16 86 28 6.9 9.7 14 241 43 12 7.7 8.7 103 153 11 6.3 9.0 14 106 40 12 8.0 8.4 100 118 10 6.3 7,4 25 65 36 12 7.7 8.4 128 111 9.3 10 6.6 14 48 30 11 7.7 8.7 130 100 8.7 18 4.6 19 45 25 12 7.4 8.7 128 91 8.4 20 3.8 36 40 22 11 7.4 9.7 142 81 9.3 16 3.4 39 38 23 11 7.4 9.3 118 75 14 13 2.9 47 36 21 11 7.4 9.0 85 71 13 24 2.7 34 34 26 11 7.1 8.7 63 71 12 24 2.7 61 32 26 11 7.1 9.0 54 60 11 15 2.9 204 38 32 10 7.1 9.3 54 54 8.7 14 8.0 122 42 31 11 7.4 10 54 50 7.4 11 12 75 139 31 10 7.4 12 116 47 6.3 10 18 50 143 37 10 7.4 12 273 37 5.7 9.3 29 39 71 43 10 8,0 12 141 30 6.0 8.0 26 35 49 32 9.7 8.0 12 174 26 5.7 6.3 19 37 41 22 10 8.0 13 172 23 5.2 4.9 14 32 39 17 9.7 7.7 14 162 20 5.2 4.2 11 29 39 17 9.7 8.0 13 148 18 5.7 15 8.0 26 34 16 9.7 8.0 13 191 16 5.7 21 6.3 24 30 16 9.3 8.0 14 174 15 6.6 24 5.2 31 30 14 9.3 8.0 16 172 50 6.9 19 11 47 40 16 10 8.7 24 199 55 6.9 13 11 49 46 14 9.3 8.7 29 302 50 6.3 11 12 37 41 13 9.0 8.7 39 164 42 4.9 11 11 34 36 14 9.0 8.7 57 123 33 4.7 10 8.0 34 32 16 9.0 8.0 138 102 27 4.2 10 6.3 38 30 17 8.7 8.4 191 126 23 4.0 9 5.2 40 27 14 8.7 8.7 136 150 19 4.9 9 4,2 35 39 13 8.4 123 162 16 4.9 12 3.8 109 12 8.0 116 12 10 3.6 Sept. 1918-19 1 2 3 4 6 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 1919-20 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 9.3 8.7 8.4 8.0 7.7 7.7 7.7 7.7 10 8.7 1.7 5.7 7.7 6.9 6.6 4.7 4.7 6.3 7.4 5.7 5.7 6.3 12 23 25 21 19 21 26 28 26 21 15 12 11 8.7 7.4 6.9 11 11 13 32 Monthly discharge of Green River at Garfield, Vt., for the years ending- September 30, 1919 and 1920. (Drainage area, 20 (approx.) square miles) DISCHARGE IN SECOND-FEET RUN-OFF MONTH Maximum Minimum Mean Per square mile Depth in in- ches on drainage area 1918-19 October November December January February. . . March April. 352 170 127 30 14 152 610 148 99 14 9.7 25 23 23 16 14 10 12 36 19 14 6.9 4.7 7.7 61.7 50.4 34.4 18.7 11.7 41.7 109 53.5 27.8 9.84 6.25 14.2 3.09 2.52 1.72 .935 .585 2.09 5.45 2.67 1.39 .492 .313 .710 3.56 2.81 1.98 1.08 .61 2.41 6 08 May.. . 3.08 June 1.55 July .57 August . .36 September .79 The year. . . 1919-20 October November December January February March 610 204 241 43 12 8.7 191 302 153 14 24 29 28 4.7 14 27 12 8.0 7.1 8.4 54 12 4.0 4.2 2.7 4.7 36.7 45.8 55.7 23.5 10.1 7.86 35.2 140 51.4 7.42 12.7 8.92 12.8 1.83 2.29 2.78 1.18 .505 .393 1.76 7.00 2.57 .371 .635 .446 .640 24.88 2.64 3.10 1.36 .58 .42 2.03 April 7.81 May 2.96 June .41 July .73 August .51 September .71 The year . . . 302 2.7 34.2 1.71 23.26 33 MissiSQUoi River near Richford, Vt. Location. — About three miles downstream from Richford, Franklin County, 3 miles below mouth of North Branch, and 2 miles above mouth of Trout River. Drainage area. — 445 square miles. Records available.— May 22, 1909, to December 3, 1910, and June 26, 1911, to September 30, 1920. Gage. — Gurley Avater-stage recorder on left bank, about one- fourth mile above highway bridge, inspected by P. Sloan until March 20, 1920, and by Harry Jenne after June 24 ; chain gage on highw