S’S’i V? (J a 3¥»*a-~ M. S' UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY MASSACHUSETTS BASIC-DATA REPORT NO. 8 GROUND-WATER SERIES ASSABET RIVER BASIN By SAMUEL J. POLLOCK AND WILLIAM B. FLECK 1 tz a£** -3:^ p if i* > X CO ’ o 3 j .'■» 'Tj - < ' ■ o 71 PREPARED IN COOPERATION WITH THE COMMONWEALTH OF MASSACHUSETTS WATER RESOURCES COMMISSION 1964 GEOLOGY LIPRARy UNITED STATES DEPARTMENT OF THE INTERIOR Geological Survey MASSACHUSETTS BASIC-DATA REPORT NO. 8 GROUND-WATER SERIES ASSABET RIVER BASIN Records of wells and test holes, materials tests, and chemical analyses of water in the Assabet River basin, Massachusetts By Samuel J. Pollock and William B. Fleck Prepared in cooperation with THE COMMONWEALTH OF MASSACHUSETTS, WATER RESOURCES COMMISSION Boston, Massachusetts 1964 Digitized by the Internet Archive in 2020 with funding from University of Illinois Urbana-Champaign Alternates https://archive.org/details/assabetriverbasi8196poll CONTENTS Page Introduction- 1 Location system- 2 Numbering systems- 2 ILLUSTRATIONS Plate 1. Map of the Assabet River basin, Massachusetts, shoving locations of wells, test wells, borings, and materials samples- (in pocket) TABLES Table 1. Geologic units in the Assabet River basin, Massachusetts, and their water-bearing characteristics- 4 2. Records of selected wells and test wells in the Assabet River basin, Massachusetts- 5 3- Records of selected borings in the Assabet River basin, Massachusetts- 19 4. Logs of selected wells and test wells in the Assabet River basin, Massachusetts- 25 5. Logs of selected borings in the Assabet River basin, Massachusetts- 28 6. Chemical analyses of water from selected wells and one pond in the Assabet River basin. Massachusetts 37 TABLES--Continued Page Table 7* Water levels in observation wells in the Assabet River basin, Massachusetts- 39 8. Particle-size distribution in samples of unconsolidated deposits from the Assabet River basin, Massachusetts- 44 9- Physical and hydrologic properties of samples of unconsolidated deposits from the Assabet River basin, Massachusetts- 45 INTRODUCTION The Assabet River, located in Worcester and Middlesex Counties in eastern Massachusetts, drains an area of approximately ITT square miles. The area includes all or a portion of the following towns: Acton, Boxborough, Carlisle, Concord, Hudson, Littleton, Marlborough, Maynard, Stow, Sudbury, and Westford in Middlesex County; Berlin, Bolton, Boylston, Clinton, Grafton, Harvard, Northborough, Shrewsbury, and Westborough in Worcester County (see plate 1 in pocket). This report presents data collected as part of an investigation of the ground-water resources in the Assabet River basin by the U.S. Geological Survey in cooperation with the Massachusetts Water Resources Commission. The data have been prepared for release in order to make available to the public basic ground-water data that will be useful in the planning of water-resources development. The data in this report were collected intermittently from 1939 to 1964 by H. A. Wilde, H. L. Pree, H. N. Halberg, J. A. Baker, R. W. Macomber, W. B. Fleck, and S. J. Pollock. The selected data in tables 2, 3* 4, and 5 represent those wells, test wells, and borings that were deemed representative of any given location. Data of some one hundred wells and test wells and over one thousand bridge and roadway borings are not included in this report, but may be inspected at the U.S. Geological Survey, Ground Water Branch, 211 Congress Street, Boston, Massachusetts. Tables 6-9 include data on chemical analyses of water samples, physical and hydrologic properties of materials samples, and water-table measurements made during the years 1961 through 1964. The geologic units used in tables 2 and 3 are described in table 1. - 1 - LOCATION SYSTEM For ease in locating wells, borings, and materials tests on the map, plate 1, a location system is used which is based on the latitude and longitude coordinates of degrees, minutes, and seconds. For example, well number Acton 34, which is located at 42°30*45" north latitude and 71°25 , 24" longitude, is given the location designation 423045N0712524.1. The ".1" at the end of this designation is a number assigned in the order the wells were inventoried within the area of the specified latitude and longitude. NUMBERING SYSTEMS Wells and test wells: These are designated by a symbol whose first term is the name of the town or city in which the well is located and whose second term is a number that is assigned in the order in which the well was inventoried within the town or city (for example: Acton 34). A separate series of numbers beginning with "1" is used within each town or city. In the tables the name of the town or city and the number are given; however, on the map, plate 1, the number only appears beside the well symbol within the designating town boundaries. Auger borings: These are designated in the same manner as the wells with one important exception; namely, a small "a" is included before the second term (for example: Harvard a2). Bridge borings: The Massachusetts Department of Public Works numbering system is used. The designation consists of a letter and three sets of numbers (for example: B9-18-16). The letter is the first letter of the town; the first number is that numbered town alphabetically beginning with that letter; the second number is the bridge number; and the last number is the boring number on that bridge. - 2 - Roadway borings: The roadway borings are grouped by the Massachusetts Department of Public Works contract numbers. Each boring within a group is designated by a symbol, also assigned by the Massachusetts Department of Public Works. For example, Contract #1-495-5(9)45 boring #92 is the designation of a boring along Interstate Highway ^95 in Bolton, Massachusetts. Metropolitan District Commission, Wachusett-Marthorough Tunnel, Contract 283: These borings are designated by the number assigned to them by the Metropolitan District Commission. - 3 - Table 1.--Geologic units in the Assabet River basin, Massachusetts, and their water-bearing characteristics Geologic :Thickness: unit : (feet) :Character Water-bearing characteristic s Alluvium Swamp deposits Outwash :Chiefly sand and silt:Does not form a distinct water-bearing : contains gravel in : unit. Where it occurs it is included : some stream channels: with the unit that underlies it. 0-53* Peat and muck; some interbedded or intermixed sand and silt. :Contain large amounts of absorbed and : ponded water, but may retard the : movement of water between the surfaces : of swamps and more permeable material : underneath the swamp deposits. Not : utilized as an aquifer. 0-111*:Sand, small amounts :Yields small to moderate quantities of : of gravel, silt, and: water to wells. Reported yields of seven : clay, and scattered : wells ranged from 7 to 120 gpm. The : boulders. : median yield was 40 gpm. Stores large : : amounts of ground water and furnishes a : : large share of the water forming the : : base flow of the streams. Ice-contact deposits 0 - 112 * Till 0-99* Sand and gravel, with small amounts of silt and clay. Unstratified clay, silt, sand, pebbles, cobbles, and boulders. Yield small to moderate quantities of water to wells. Reported yields of 56 wells ranged from 3 to 120 gpm. The median yield was 43 gpm. Individual deposits may differ markedly from one another in composition, sorting, and permeability, and each must be explored to find the more permeable deposits. Yields small amounts of water to wells. Because of poor sorting and a large range of particle size, permeability of till is small. Many shallow wells reportedly go dry during the summer. Till may confine water in underlying bedrock. 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P 0 d G P G O d ft 0 0 a. O 0 P G « p as 0 d tsl h 0 L d ft a) 0 • K >> c 0 d d 0 • 0 • • 0 P • N G 3 • d • Li d • 0 -P d 0 Li 0 a O • >. P O ft G O P ft O d O Pi O 0 O CQ 0 p O CQ L p. ft CQ 0 O ft 0 d 0 ft a3 ft G £ 1 CQ ft 0 : Pi ft O O ft d m ftl h 0 > O C 0 0 0 aJ P > ft! P C3 ft > a a m O INI O P G ft ft ft > Li 0 P ft • • 3 ft • O 8l O O O O P Lt • U U a • v • L Li 0 G • • Li • p Uh O K < a S5 a W a > K bJ PG a p a Js; tH p a a O rhH r-( f—I H H H VO VO LTV CVJ fOO IAIA OOOO 3333 OJ CVJ CVJ CVJ ONO H 04 f04- 10 VO t— lO UMO IAUMAUMA 18 2k : 421849N0714125.1 :A. E. Parker : 1750 : 520 : Du : 7*5 : 24 : - : t : t : 4.5 t 8-24-62: D : p/e :Dry in dry seasons. 25 : 421931N07l4l47.1 :W. T. Moore : 1953 : 510 : Dr : 95 : 6 : 6 : - : br : 45 : 1-14-53: D : J/e :Y 6 . Table 3-—Records of selected borings in the Assabet River basin, Massachusetts Boring no.: For explanation of boring-numbering system, see text. Location: For explanation of boring-location system, see text. Altitude of land-surface datum: Altitudes expressed in feet and tenths are instrumentally determined, those in whole feet are interpolated from topographic maps. Datum is mean sea level. Type of boring: A, augered; Dn, driven; Dr, drilled. Depth to bedrock or refusal: An "R" appended to the depth indicates the boring was bottomed at refusal which may be bedrock, a boulder, a hard or cemented layer, or till. Material: For explanation of geologic units, see table 1. Character: cl, clay; g, gravel; s, sand; st, silt; t, till. Geologic unit: al, alluvium; br, bedrock; icd, ice-contact deposits; ow, outwash deposits; sw, swamp deposits, t, till deposits. Water level: In feet below land-surface datum except when preceded by a + indicating it is above land-surface datum. NOTE: See table 5 for logs of borings listed in table 3. : Location : : : : : Depth :Altitude: : : : to Date :of land-: Type :Depth :Diameter :bedrock Material Water Remarks :surface : of : of :of boring: or Charac ter:Geologic level : datum :boring:boring: :refusal : (feet) : :(feet):(inches) : (feet) : unit MIDDLESEX COUNTY ACTON U.S. Geological Survey Auger Borings al : 423201N0T12400.1 7-63 190 A 67.5 4 67.5R s, st icd 25 a2 : 423152N0712408.1 7-63 175 A 9-5 9-5R S,g ow 5 a3 : 423152N0712425.1 7-63 195 A 8.0 4 4 4 4 4 8. OR s,g ow none a4 : 423153N0712421.1 7-63 195 A 49 49R S,g ow 25 a5 : 423118N0712559.1 7-62 230 A 63 63R S,g icd 11 a6 : 423115N0712556.1 7-62 225 A 26 26 r s,st,g icd 10 aT : 422843N0712520.1 7-62 160 A 67 67R s,g icd 12 a8 : 422852N0712513.1 7-62 150 A 31 4 i 4 3IR s,g icd 5.6 a9 : 422851N0712526.1 7-62 155 A 20 20R S,g icd - alO : 422811N0712449.1 7-62 155 A 72 4 72R s, st icd 17 all : 42281INO712454.I 7-62 150 A 53 ti 4 4 53R S,g icd 15 al2 : 422807N0712455.1 7-62 150 A 4o 40R S,g icd 15 al3 : 422803N0712501.1 7-62 155 A 18 18R S ,S icd - al4 : 422844N0712526.1 7-62 165 A 76 76R s,st,g icd - al5 : 422830N0712542.1 7-62 170 A 33 4 33R S,g icd 12.4 al6 : 422822N0712543.1 7-62 180 A 13 t 4 13R S,g icd 11 alT : 422929N0712452.1 7-62 155 A 13 13R s t - al8 : 422931N0712447.1 7-62 155 A 69 69R S,g icd 14 Mass. Dept. Public Works Bridge Borings A2-1-2 : 422628N0712548.1 : 5-52 : 136 : Dn : 48.8 : 1 48.8R : s,g,cl OW . 1 of 8 borings. A2-7-2 : 422750N0712524.1 : : 132 : Dn : 20.0 : : s,g,c1 al _ 1 of 2 borings. A2-13-4 : 422956NO712507.1 : : 143 : Dn : 30.0 : 30.OR : s,g icd _ 1 of 4 borings. A2-29-1 : 422825N0712640.1 : 6-50 : 167 : Dn : 13.5 : 1 13.5R : s,g SW 5-5 1 of 12 borings A2-35-3 : 422927N0712738.1 : 6-50 : 240 : Dn : 9-5 : 1 9-5R : t t 1 of 13 borings A2-36-5 : 422852N0712705.1 : 6-50 : 211 : Dn : 8.5 : 1 8.5R : t t _ 1 of 12 borings A2-37-6 : 422840N0712656.1 : 6-50 : 196 : Dn : 11.5 : 1 11.5R : t t - B0XB0R0UGH U.S. Geological Survey Auger Borings al : 422838N0713033.1 : 7-63 : 235 : A : 43 : 44 - : s,g,t icd 15 a2 : 422847N0713016.1 : 7-63 : 235 : A : 40.5 : 4t : s icd a3 : 422821N0712935.1 : 7-63 : 235 : A : 21.5 : 4f 21 .5r : s,g icd Mass. Dept. Public Works Bridge Borings B18-1-3A 423002N0712833.1 1-50 : 227 : Dn : 16.0 : 1 : 16.OR : s,g : ow : 3-0 :1 of 11 borings. B18-2-11 422912N0713245.1 4-58 : 28l : Dn : 21.3 : 2 : 21.3R : s,g,cl : icd : none :1 of 30 borings; trace : : of water at 21.3 ft. CONCORD U.S. Geological Survey Auger Borings al 422659N0712438.1 7-63 : 150 : A : 56 : s If 4 : 56R : s,st : icd : 20 a2 422804N0712338.1 7-63 : 130 : A : 64 : : 48.5R : s,g : ow a 3 422819NO712253.1 8-63 : 128 : A : 3^ : : 34r : s,st,g : ow : 15 ah 422852NO712134.I 8-63 : 195 : A : 21 : : 21R : s,g,st,t: ow 19 Table 3-—Records of selected borings in the Assabet River basin, Massachusetts—Continued Boring no. Location :Altitude Date : of land- :surface : datum : (feet) Type :Depth :Diameter of : of :of boring boringrboring: :(feet):(inches) Depth to bedrock or refusal (feet) Mate: Character -ial Geologic unit Water level Remarks CONCORD (Continued) Mass Dept. Public Works Bridge Borings C19-7-3 422756N0712331.1 10-33: 114 Dn 93-0 s ow 1.0 1 of 4 borings. C19-8-4 422632N0712538.1 1-58 : 132 Dn 93-0 1 93. OR s,st,g,cl ow 4.0 1 of 6 borings. C19-18-6 422809N0712425.1 1-50 : 123 Dn 18.5 1 18.5R S,g al 3-0 1 of 14 borings. C19-22-3 422729N0712356.1 10-33: 138 Dn 20.0 - - s,cl icd 6.0 :1 of 9 oorings. C19-27-2C- 422810N0712430.1 6-50 : 126 Dn 34.0 - - s,cl,g,st OW - :1 of 5 borings. c19-19-1 422705N0712336.1 -40 : 115 Dn 30.5 - - S,g,cl icd 2.5 1 of 4 borings. HUDSON U.S. Geological Survey Auger Borings al : 422308N0713439.1 : 7-63 : 207 A 22 4-4 : 22R : s,g,st : hi : l4R : s,st,g : 4? : - : s,g : 4i : 22R s : 4-|- : 64r : s : icd 7 a2 : 422308N0713439.2 : 7-63 : 207 A l4 icd _ a3 : 422308N0713439.3 : 7-63 : 207 A 6.5 icd - a4 : 422307N0713442.1 : 7-63 : 207 A 22 icd 12 a 5 : 422346N0713019.1 : 7-63 : 215 A 64 ow 20 Mass Dept. Public Works Bridge Borings H25-8-3 : 422359N0713246.1 : 195 Dn 17.8 • " • s,g,cl : ow . 1 of 6 borings. H25-16-5: 422208N0713543.1 : : 208 Dn 99-5 1-3/8: 99-5R :st,s,cl,g: icd 0 1 of l6 borings. H25-17-8: 422217N0713549.1 : - 230 Dn 25.5 1-3/8: 25.5R :s,g,st,cl: icd 7-5 1 of l8 borings. Mass Dept. Public Works Roadway Borings 1 - 495 - 5 ( 9)45 422353N0713604.1 : 2-63 : 337-1 : Dn : 4.5 : 2 : 4.5R : t : t : none :1 of 6 borings 1-495-5(11)42 422208N0713545.1 : 2-63 : 207.2 : Dn : 16.5 : 1-3/8: - : sw,s,g : icd : 0 :2 of 7 422222N0713552.1 : 2-63 : 266.6 : Dr : 21.5 : 1-3/8: - : t : t : 3.5 : borings. l LITTLETON Mass. Dept. Public Works Bridge Borings L13-18-5 : 423102N0713007.1 : 1-50 : 248 : Dn : 7-5 : 1 : 7-5R : t : t :1 of 8 borings. MARLBOROUGH Mass. Dept. Public Works Bridge Borings M6-7-8 : 422200N0713541.1 : 8-59 217.1 : Dn : 85.O 1-3/8: 85.OR s,g,st,cl icd 8.5 1 of l6 borings M6-8-16: 421957N0713434.1 : 9-59 391.9 : Dn : 32.0 2 : 32.OR S,g t 2 1 of 21 borings M6.-9-IOA: 422028N0713432.1 : 10-59 441.9 : Dn : 15.5 2 : 15. 5R S,g t 3 1 of 17 borings M6-10-10: 422050N0713434.1 : 10-59 465.6 : Dn : 13.0 2 : 8.0 s t,br none 1 of 24 borings M6-12-10A: 422132N0713512.1 : 9-59 304.8 : Dn : 18.0 2 : 18.OR s icd none 1 of 25 borings M6-13-3: 422125N0713502.1 : 3-63 286.1 : Dn : 31.5 1-3/8: - S,g icd .5 1 of 4 borings. Mass. Dept. Public Works Roadway Borings 1-495-5(11)42 3C : 422053N0713436.1 : 2-63 464.7 : Dr : 35-3 1-3/8: 27.3 s t,br none 3C-69 are 13 of l4 : 422101N0713439.1 : 2-63 437.4 : Dn : 9-5 1-3/8: 9-5R S,g t 2.3 6l borings. 15 : 422116N0713440.1 : 2-63 431.1 : Dr : 17-3 1-3/8: 9-3 S,g t,br 3.2 16 : 422116N0713443.1 : 2-63 445.6 : Dr : 31.6 1-3/8: 23.6 S,g t,br 6.9 25 : 422112N0713448.1 : 2-63 402.3 : Dr : 28.7 1-3/8: 20.7 S,g t,br 8.7 32 : 422118N0713456.1 : 2-63 357-5 : Dr : 21.4 1-3/8; 13.4 s,st,g t,br 1.8 36 : 422124N0713505.1 : 2-63 285 : Dn : 16.5 1-3/8: - S,g icd - 46 : 422128N0713511.1 : 2-63 283.9 : Dn : 26.5 1-3/8: - s,g,st,sw icd .5 50 : 422135N0713517.1 : 2-63 336.0 : Dr : 28.6 1-3/8: 19.6 t t,br 10.8 570: 422143N0713526.1 : 2-63 290 : Dr : 21.0 1-3/8: 13.0 s,g,st br,icd .5 62 : 422146N0713526.1 : 2-63 320.1 : Dr : 11.2 1-3/8: 3-2 t t,br none 65 : 422149N0713528.1 : 2-63 277.8 : Dn : 21.5 1-3/8: - sw, s icd 0 69 : 422154N0713533-1 : 2-63 282.3 : Dr : 24.0 1-3/8: 16.0 Sjg t,br 5.1 20 / Table 3-—Records of selected borings in the Assabet River basin, Massachusetts--Continued : Depth :Altitude: : to Boring no. Location Date :of land-: Type Depth Diameter :bedrock Material Water Remarks :surfac e : of of of boring: or Charac ter:Geologic level : datum :boring : (feet) : boring (feet) :refusal (inches) :(feet) : unit MARLBOROUGH (Continued) Mass. Dept. Public Works Roadway Borings (Continued) 1-^95-5(7)39 68 : 422001N0713434.1 - 401.1 Dr 17.0 2 - t t 8 68-96 are 6 of 73 70 A: 422007N0713435.1 - 383.1 Dn 16.0 2 - t t 1.1 borings. 72 : 422012N0713434.1 - 383.8 Dn 16.0 2 - t t 1.2 74 : 422019N0713432.1 - 461.7 Dr 42.0 2 - t t 18 84 : 422021N0713427.1 - 483.2 Dr 48.0 2 - t t 22 96 : 422036N0713438.1 - 461.0 Dr 16.0 2 - t t 9 Metropolitan District Commission Tunnel Borings Wachusett-Marlborough Tunnel, Contract 283 24 421950N0713614.1 3-58 : 245.0 : Dr : 52 : 4 : 20 : cl,s,g : icd,br : 0 : 25 421943N0713607.1 3-58 : 260.0 : Dr : 50.0 : 4 : 20 : s : t,br : 4.0 : 26 421937N0713559.1 3-58 : 260.0 : Dr : 52.0 : 4 : 22 : s : t,br : 0 : 27 421930N0713550.1 4-58 : 308.0 : Dr : 52.0 : 4 : 32 s,g : t,br : 0 : MAYNARD Mass. Dept. Public Works Bridge Borings M10-10-1 : 422543N0712735.1 M10-1-11A: 422524N0712831.1 12-55: -29: 169 .O 173.8 Dn : 33-7 : Dn : 17.3 : 2 : 33 - 7 R : s,g : 17.3R : s,g,cl icd : + 6.7 :1 of 4 borings, icd : - :1 of l4 borings. STOW U.S, Geological Survey Auger Borings S29- al : 422744N0713H2.1 : 7-63 : 265 A 15 f if 4 i % i 15R s,st,cl,g icd - a 2 : 422744N0713U2.2 : 7-63 : 265 A 32 32R st, s icd 5 a3 : 422751N071310 7.1 : 7-63 : 275 A 38 38R S,g icd 5 a4 : 422617N0713239.1 : 7-63 : 215 A 65 65 R sw,s,g SW 5 a5 : 422606N0713229.1 : 7-63 : 242 A 5 - s,g icd - a 6 : 422606N0713229.2 : 7-63 : 242 A 74.5 74. 5R S,g icd 48 a7 : 422512N0713222.1 : 7-63 : 225 A 66 66r S,g icd 20 a 8 : 422549N0712931.1 : 7-63 : 195 A 6 - S,g ow - a 9 : 422549N0712931.2 : 7-63 : 195 A 5 - S,g ow none alO: 422442N0713029.1 : 7-63 : 188 A 30 30R s,st,cl,g icd - all : 422629N0713249.1 : 7-62 : 220 A 44 44R S,g icd 11 Mass Dept. Public Works Bridge Borings 1-7 : 422417N0713137.1 : 2-47 : 181.7 Dn 13-0 _ 13. OR s,g t 5-2 : 4226o4n0713145-1 : 5-52 : 218.5 Dn 16.0 16. OR S,g t 6 : 1 of 6 borings. WESTFORD al : 423212N0712408.1 : 7-63 a2 : 423212N0712408.2 : 7-63 a3 : 423213N0712357.1 : 7-63 a4 : 423227N0712511.1 : 7-63 a5 : 423227N0712511.2 : 7-63 a6 : 423240N0712557.1-: 7-63 a 7 : 423226N0712553.1 : 7-63 a8 : 423222N0712546.1 : 7-63 W26-18-13 : 423313N0712703.1 : 3-59 W 26 - 22-19 : 423347N0712602.1 : 8-58 U.S. Geological Survey Auger Borings 205 : 205 : 205 : 205 : 205 : 225 : 195 : 185 : Mass. 220.7 : 244.5 : A l4 k l 4 4 $ k 4 Works Brie 14 r s,g icd : 11 A 11 IIP s,g icd : 8 A 11 11R S,g icd : 7 A 9 9R s,st,g icd : none A 10 10R s,g icd : none A 12.5 12. 5R st,s,g icd : none A 43 43R g,st,s icd : 9 A Dept. 36.5 Public 36.5R ige Bori s,g,st igs icd : 8 Dn 27.5 2 27.5R S : icd : 0 Dn 12.0 1 - 1—1 0 03 : icd : -5 of 17 borings, of 2 borings. 21 Table 3-—Records of selected borings in the Assabet River basin, Massachusetts—Continued Boring no. Location :Altitude: Date :of land-: Type : : Depth : to Depth :Diameter -.bedrock Material Water Remarks :surface : of : datum :boring : (feet) : of :of boring: or boring: :refusal (feet):(inches) :(feet) Charac ter:Geologic : unit level WORCESTER COUNTY BERLIN Mass. Dept. Public Works Bridge Borings B9-2-3A: 422237N0713848.1 : 6-55 245.9 : Dn : 35-0 1 35-OR s,g icd 2.0 :1 of 6 borings. B9-6-2 : 422138N0713633.1 : - 210 : Dn : 47.0 - - s,g icd 3-0 :1 of 4 borings. B9-12-2: 422111U0713726.1 : 9-55 216.9 : Dn : 34.5 1 34.5R s,g icd - :1 of 2 borings. B9-14-1: 422116N0713739.1 : 8-57 215 : Dn : 11.0 1 11. OR s,g icd • 5 :1 of 4 borings. B9-17-12: 422343N0713626.1 : 8-59 362.1 : Dn : 21.0 2 21. OR s,g icd 16.0 :1 of 26 borings. B9-18-16: 422345N0713626.1 : - 341.1 : Dn : 24.5 2 24.5R s,g icd -5 :1 of 31 borings. B 9 -I 9 -IOI: 422259N0713611 .1 : 2-63 324.2 : Dn : 26.5 1-3/8 - s icd .7 :1 of 4 borings. Mass. Dept. Public Works Roadway Borings 1 - 493 - 5 ( 11)42 78 : 422235N0713559.1 : 2-63 : 235-0 : Dn : 16.1 1-3/8: 16.1R sw,s,st sw,t + .3 82 : 422239N0713558.1 : 2-63 : 308.2 : Dr : 12.0 1-3/8: 4.0 t t,br - 84 : 422241U0713600-1 : 2-63 : 294.7 : Dn : 10.0 1-3/8: - S,g t 3-7 89 : 422245N0713606.1 : 2-63 : 378.6 : Dr : 20.9 1-3/8; 12.9 t t,br none 91 : 422248N0713606-1 : 2-63 : 371.3 : Dr : 22.2 1 - 3 / 8 ; 14.2 t t,br 6.3 96 C : 422253N0713606.1 : 2-63 : 359-0 : Dr : 20.8 1 - 3 / 8 ; 14.0 t t,br none 10 i : 422259N0713610.1 : 2-63 : 324.2 : Dn : 26.5 1-3/8: - s icd • 7 103 : 422303N0713611.1 : 2-63 : 325 : Dn .: 37-0 1-3/8: - sw, st, s sw 0 104 : 422303N0713613.1 : 2-63 : 324.4 : Dn : 21.5 1-3/8: - sw,s,g sw,icd • 3 1 - 495 - 5 ( 9)45 2 DAM : 422308N0713630.1 : 2-63 : 387.0 : Dn 14.0 2 14.0R s,st,g t - 3 DAM ; 422306N0713629.1 : 2-63 : 395 : Dn 25.0 2 - s,st,g t - 2A : 422311N0713620.1 : 2-63 : 382.1 : Dn 13.0 2 - t t none 6 B : 422323N0713622.1 : 2-63 : 396.0 : Dn 6.0 2 6 . OR s, st t none 7 : 422322N0713625.1 : 2-63 : 435 : Dr 13.0 2 5-0 t t,br 7 23 : 422332N0713628.1 : 2-63 : 430.6 : Dr 15.2 2 7-3 s t,br 7.3 42 : 422336N0713636.1 : 2-63 : 369.2 : Dn 16.0 2 - s icd none 56 : 422348N0713614.1 : 2-63 : 372.0 : Dr 17.0 2 7.0 S,g t,br none 64 : 422350N0713626.1 : 2-63 : 342.2 -. Dn 31.0 2 - sv,s,g sw 0 67 : 422351N0713631.1 : 2-63 : 342.1 ; Dn 30.0 2 - sw,s,g sw 0 78-104 are 9 of 26 borings. 2 DAM -67 are 10 of 58 borings. Metropolitan District Commission Tunnel Borings Wachusett-Marlborough Tunnel, Contract 283 2 : 422325N0714044.1 : 11-57 354.5 Dr : 49.0 4 19 s,g ow,br 2.8 4 : 422301N0714014.1 : 11-57 335 Dr : 322.0 4 14 s,st t,br - 5 : 422247N0713957.1 : 3-58 455 Dr : 32.5 4 17-5 S,g,st t,br 4 6 : 422241N0713941.1 : 3-58 425 Dr : 34.5 4 11.0 S>g t,br 1 7 : 422229N0713931.1 : 4-58 363 Dr : 27.5 4 .8 br 3 8 : 422221N0713924.1 : 4-58 365 Dr : 340.0 4 40.5 S,g t,br - 9 : 422211N0713910.1 : 4-58 365 Dr : 33-0 4 9 s,g,st t,br 0 10 : 422147N0713841.1 : 1-58 281 Dr : 45.5 4 15.0 S,g icd,br 0 BOLTON U.S. Geological Survey Auger Borings al : 422646NO 713 342 .1 : 7-63 : 251 A : 45 Nr 45 R s>g icd 11.5 : Mass Dept. Public Works Bridge Borings B15-2-3C : 422550N0713538.1 : 7-59 : 331.9 Dn : 40.0 1-3/8 40.0R s,g icd 6.5 :1 of 29 borings BI 5 - 3-6 : 422651N0713502.1 : 7-59 : 352.4 Dn : 32.5 1-3/8 27.5 S icd,br none ; 2 of 16 B15-3-11 : 422651N0713502.2 : 7-59 : 347.2 Dn : 42.0 1-3/8 - s>g - none : borings. B15-4-12 : 422458N0713621.1 : 7-59 : 359-7 Dn : 7-5 2 7 . 5 R s,g t - : 1 of 42 borings B15-5-3 : 422452N0713624.1 : 3-63 : 337.8 Dn : 44.5 1-3/8 - s icd +1 : 1 of 4 borings. B15-6-2 : 422452N0713624.2 : 3-63 : 337-6 Dn : 4l.O 1-3/8 - s icd +2 : 1 of 3 borings. B15-7-111: 422621N0713522.1 : 2-63 : 326.0 Dn : 55-0 1-3/8 - sw,st,s SW 0 : 1 of 4 borings. B15-8-37' : 422710N0713446.1 : 2-63 : 294.0 Dn : 34.0 1-3/8 - sw,st,s sw 0 : 1 of 5 borings. 22 Table 3-—Records of selected borings in the Assabet River basin, Massachusetts—Continued Boring no. : : Depth : Location :Altitude Date :of land- Type : : to Depth :Diameter :bedrock Material Water Remarks :surface of of :of boring: or Character;Geologic level . : datum : (feet) boring boring: :refusal (feet):(inches) : : unit BOLTON (Continued) Mass, Dept. Public Works Roadway Borings 1 - 495 - 5 ( 9)45 70 : 422351N0713628.1 : 2-63 : 345 Dn 43.0 2 - sw,s,g sw + 0.5 81 : 422410N0713634.1 : 2-63 : 342.0 Dn 25.0 2 - sw,s,g sw - 92 : 422422N0713635.1 : 2-63 : 342.6 Dn 20.0 2 - sw, s, st icd +.5 96 : 422431N0713634.1 : 2-63 : 345.2 Dn 16.0 2 16. OR sw,s,g t + 1.0 102 : 422440N0713632.1 : 2-63 : 359-3 Dn 9.0 2 9. OR s,st,g t none 105 : 422448N0713629.1 : 2-63 : 338.7 Dn 13.0 2 - sw, s sw + 2.0 108 : 422452N0713628.1 : 2-63 : 337-8 Dn 17.0 2 - s,st sw, icd + 1.0 112 : 422456N0713620.1 : 2-63 : 362.4 Dr 16.5 2 8.5 S,g t,br none 138 : 422521N0713559-1 : 2-63 : 390.7 Dr 15.0 2 7-0 S,g t,br 8.0 143 : 422535N0713549.1 : 2-63 : 351.4 Dn 6.0 2 6 . OR s,g sw none 70-143 are 10 of 75 borings. 1-495-5(10)48 1 2 11 4l 46 102 108 113 123 127 131 133 209 422537N0713546.1 422549N0713536.1 422616N0713524.1 422714N0713445.1 422718N0713440.1 422602N0713524.1 422619N0713522.1 422625N0713520.1 422646N0713508.1 422651N0713504.1 422703N0713452.1 422708N0713448.1 422548N0713544.1 _ 373-9 : Dr : 13.0 1 - 3/8 5.0 t t,br none _ 333.1 : Dn : 10.0 1-3/8 10. OR s,st,g icd none _ 335-8 : Dn : 6.0 1-3/8 6 . OR S,g icd none _ 293.3 : Dn : 66.0 1-3/8 - sw,s,g sw 0 _ 296.0 ; Dn : 6.0 1-3/8 6 .OR t t • 5 _ 329.6 : Dn : 8.0 1-3/8 8 .OR S,g icd none _ 325.7 : Dn : 40.0 1-3/8 - sw,s,g sw 0 _ 326.8 : Dn : 50.0 1-3/8 - sw,s,g sw 0 _ 329.2 : Dn : 28.0 1-3/8 - sw,s,g sw 0 _ 345.8 ; Dn : 9-0 1-3/8 9. OR S,g icd none _ 316.3 : Dn : 18.0 1-3/8 18. OR S,g icd none _ 293.8 : Dn : 42.0 1-3/8 - sw,st,cl,s,g sw 0 - 330 : Dn : 26.0 1-3/8 - s,g,st sw,icd • 5 1-209 are 13 of borings. 149 CLINTON Metropolitan District Commission Tunnel Borings Wachusett-Marlborough Tunnel, Contract 283 3 : 422354N0714101.1 :ll-57 : 355 : Dr : 49 : 4 : 19 : « : ow,br : 1.8 : HARVARD al : 422749N0713259-1 U.S. Geological Survey Auger Borings 235 : A : 36.5 : : 36 .5R : s,g,st : sw,icd : 1 H 9 - 20 - 7 B : 422815N0713333.1 : 7-59 H9-21-5 : 422820N0713328.1 : 7-59 Mass. Dept. Public Works Bridge Borings 256.3 : Dn : 16.5 241.1 : Dn : 34 0 1-3/8: 11.5 : 1-3/8: 34 OR : s,g :t,br,icd: none sw,s,g : icd : -5 :1 of 35 borings. :1 of 8 borings. Mass. Dept. Public Works Roadway Borings 1-495-5(10)48 56 : 422729N0713424.1 320.5 : Dn : 6.0 80 : 422759N0713349.1 - 271.7 : Dn : 26.0 82 : 422803N0713344.1 - 27,2.2 : Dn : 8.0 86 : 422809N0713337-1 - 274.4 : Dn : 5-0 l 6 l : 422738N0713411.1 - 302.0 : Dn : 8.0 167 : 422741N0713407.1 - 319.9 : Dn : 30.0 175 : 422746N0713402.1 - 339-5 : Dr : 43.0 180 : 422749N0713357.1 - 309.3 : Dr : 17.0 207 : 422818N0713323.1 - 241.3 : Dn : 18.0 1-3/8: 6 . OR s,g t none 56-207 are 9 of 117 1-3/8: 26. OR s,g icd 11.0 borings. 1-3/8: 8 . OR s,g,st icd none 1-3/8: 5 .OR t t none 1-3/8: 8 . OR t t 4.0 1-3/8: - t t none 1-3/8: 35-0 t t,br none 1-3/8: 9-0 t t,br - 1-3/8: 18. OR sw,s,g sw,icd + 1.0 N0RTHB0R0UGH U.S. Geological Survey Auger Borings al : 421857N0713941.1 : 7-63 : 305 : A : 31 : I 4 kl 4 : 31R : s,g : icd : 8.3 a 2 : 421914N0714025.1 : 7-63 : 320 : A : 8 : : 8 r : t : t : a3 : 421920N0714029.1 : 7-63 : 325 : A : 26.5 : : 26.5R : s,g : sw : 9 ah : 421739N0713851.1 : 7-63 : 305 : A : 87 : : 87 R : s,g,t ; ow : 32 a5 : 421755N0713925.1 : 7-63 : 305 : A : 30.5 : : 30.5R : s,g : ow : 25 a 6 : 421749N0713918.1 : 7-63 : 305 : A : 63 : : 63 R : s,g : ow : 15 23 Table 3*--Records of selected, borings in the Assabet River basin, Massachusetts-—Continued : Location :Altitude: Date :of land-: Type : : Depth : : to Depth :Diameter :bedrock Material Water Remarks :surface : of of :of boring: or Charac ter:Geologic level : datum :boring : (feet) : boring: :refusal (feet):(inches) :(feet) : unit NORTHBOROUGH (Continued) Mass. Dept. Public Works Bridge Borings N20-1-4A 421924N0713818.1 :10-59 : 251.7 : Dn : 20.0 : 2 : 20.OR : s,g : ow 6.0 :1 of 6 borings N20-4-4 421739N0713816.1 : 1-47 : 277.5 : Dn : 78.O : - : 78.OR : s,cl,g : ow 7-9 :1 of 9 borings N20-17-1 421915N0713656.1 : -30 : 280.0 : Dn : 32.0 : - : - : s,g : iod 7-2 :1 of 2 borings Metropolitan District Commission Tunnel Borings Waehusett-Marlborough Tunnel, Contract 283 11 : 422131N0713822.1 : 1-58 : 275 : Dr : 73-9 4 43 s,g icd,br : 11 12 : 422123N0713811.1 :12-57 : 255 : Dr : 45.4 4 25 s,g icd,br : 2 Shaft B : 422120N0713808.1 :12-57 : 299.8 : Dr :300.2 4 24 s,g t,br : 34.5 13 : 422110N0713754.1 :12-57 : 241.0 ; Dr : 66.7 4 23 s>g t,br : - 14 : 422058N0713736.1 :12-57 : 225.0 ; Dr : 69.O 4 31.0 s,g,st sw,br : 0 15 : 422055N0713735.1 : 1-58 : 228.0 : Dr :100.8 4 73.4 st,s,g ow,br : 0 15A: 422054N0713735.1 : 243.0 : Dr :115.6 4 84.8 st,s,cl ow,br : 15.0 15B: 42205LN0713731.1 : 3-58 : 262.0 ; Dr :105.8 4 80.0 s,st,g ow,br : 11.5 16 : 422101H0713754.1 : 3-58 : 286.0 ; Dr :123.3 4 97.2 s,g,st t,br : 12.0 17 : 422045N0713724.1 : 4-58 : 240.0 : Dr : 85.O 4 61.8 s, st icd,br : 12.5 18 : 422035N07137U. 1 : 3-58 : 228.0 : Dr : 54.0 4 24.0 S,g icd,br : 1.5 19 : 422029N0713705.1 : 1-58 : 223.0 : Dr : 86.0 4 56.0 s, st icd,br : 2.0 20 : 422027N0713701.1 : 2-58 : 225.0 : Dr : 54.4 4 24.4 S,g icd,br : 4.0 21 : 422015N0713646.1 : 3-58 : 253.0 :- Dr :103.2 4 31.8 s icd,br : 12.5 22 : 422005N0713634.1 : 2-58 : 239 : Dr :239.0 4 24.0 s,g,st icd,br : 0 23 : 421958NO713625.I : 2-58 : 243 : Dr : 58.5 4 28.5 cl,st,s icd,br : 1.0 WESTBOROUGH U.S. Geological Survey Auger Borings al : 421612N0713904.1 : 7-63 : 290 : A : 67 lli h- 2 : 67R :s,g,cl,st, t : OW : 10 : Mass. Dept. Public Works Bridge Borings W24-2-2 : 421700N0713821.1 : -30 : 271.5 : Dn : 36.0 . : - : s,g : ow : +1.0 :1 of 6 borings. W27-7-6 : 421627N0713732.1 :12-62 : 327.3 : Dn : 30.0 2 : - : s : ow : 21.0 :1 of 7 borings. W24-17-1: 421626N0713758.1 : 9-55 : 285.4 : Dn : 14.0 1 : - : s,g : ow : :1 of 2 borings. W24-18-2: 421523N0713802.1 : 9-55 : 334.3 : Dn : 19.5 1 : 19.5R : s,g : led : :1 of 2 borings. 24 Table 4.—Logs of selected wells and test wells in the Assabet River basin, Massachusetts (Thicknesses and depths below land-surface are given in feet) Thick¬ ness Depth Thick¬ ness Depth Thick¬ ness Depth ACTON 1. Alt. about 210 ft. ACTON 133. Alt. about 135 ft. ACTON 146. Alt. about 150 ft. Driller's log. Driller's log. Driller's log. Mud, black. 10.6 10.6 Medium brown sand and broken Fine to coarse brown sand. 10 10 Sand, fine, gray. 5.5 16.1 gravel changing to fine gray Fine to coarse brown sand. Sand, coarse, gray. 21.4 37-5 sand and sharp gravel. Water some small gravel. 5 15 Hardpan. 2.5 4o.o clayey looking. Tight. 20 20 Medium to coarse brown sand Fine to medium gray sand with and gravel, some fines. 15 30 ACTON 6. Alt. about 210 ft. sharp gravel and clay. Medium to coarse brown sand Driller's log. Tight. 9.5 29.5 and gravel, some fines and Mud, black. 5.1 5.1 Weight bouncing. at 29.5 trace of clay. 5 35 Sand, fine, gray. 10.2 15-3 Medium to coarse brown sand Gravel, brown. 10.5 25.8 ACTON 135. Alt. about 145 ft. and gravel, some fines. 3 38 Driller's log. Medium to coarse gray-brown ACTON 116. Alt. about 215 ft. Medium brown sand and broken sand and gravel, some fines. 2.3 40.3 Driller's log. gravel, some clay. Pumped Fine to medium brown sand and fair—pumped sand... 19 19 ACTON 147. Alt. about 205 ft. gravel. 25.5 25.5 Fine gray sand, some small Driller's log. Not reported. a 25.9 gravel. Started to pump but Gray clay.. 27.8 27.8 Weight bouncing. at 25.9 tightened up. 5 24 Coarse gravel, clay. 5.0 32.8 Fine gray sand and broken Sharp gravel, broken rock. 6.9 39-7 ACTON 118. Alt. about 150 ft. gravel. Started to pump but clay. 6.9 39-7 Driller's log. tightened up. 6 30 Hit ledge. at 39-7 Fine to medium brown sand and Fine to medium gray sand and gravel with clay. Tight—no gravel with some clay. ACTON 151. Alt. about 180 ft. good. 25 25 Pumped but on tight side.... 6.7 36.7 Driller's log. Fine brown sand and some clay. Weight bouncing. at 36.7 Fine to medium brown sand and Tight—no good. 6 31 gravel with clay. Drove Fine gray sand, some gravel. ACTON 137. Alt. about 150 ft. hard to 8 ft. 18 18 Pumped a little but on the Driller's log. Fine brown sand and gravel tight side. 5 36 Fine to medium brown sand and with clay. Tightened up. 5 23 Not reported. 3 39 large gravel, some clay. Fine to medium brown sand and Refusal. at 39 Pumped fair—pumped sand. gravel, some clay. Pumped Drove hard. 19 19 fair. 5 28 ACTON 119. Alt. about 150 ft. Fine brown sand, some clay* Fine to medium brown sand. Driller's log. tight. Drove hard. 23 42 Pumped very little. 20 48 Fine to medium light brown sand Fine to medium brown sand and Fine to medium brown sand and and gravel. Pumped good— gravel. Pumped fair—pumped gravel. Pumped mostly all pumped sand. 21 21 sand... 4 46 sand. 6 54 Fine to medium brown sand and Fine to medium brown sand and Fine to medium brown sand and gravel. Pumped good—pumped gravel. Pumped fair—pumped small gravel. Specks of sand. 5-5 26.5 sand. Drove hard. 5-5 51.5 clay. Pumped fair. 12.2 66.2 Not reported. 1.4 27.9 Medium brown sand and gravel. Refusal. at 66.2 Refusal. at 27.9 Pumped good. Drove hard. 5-5 57 Medium brown sand and gravel. ACTON I 55 . Alt. about 180 ft. ACTON 121. Alt. about l40 ft. Pumped good—pumped sand. Driller's log. Driller's log. Drove hard. 5 62 Fine silty gray sand. 26.9 26.9 Sand. 9 9 Fine to medium gray sand Fine brown sand, some coarse. Medium sand. 6 15 sharp gravel and gray clay.. 2 64 Pulled plug. 4.9 31.8 Sand, gravel. 11 26 Fine brown sand and gravel. Sharp gray gravel, sand, clay.. 6 32 ACTON 139. Alt. about l60 ft. Pumped free. 5.1 36.9 Driller's log. Medium to fine sand; coarse ACTON 122. Alt. about 220 ft. Fine to medium brown sand and sharp gravel. 5.1 42.0 Driller's log. gravel. Pumped mostly sand.. 23.5 23.5 Fine sand and clay. 5.0 47.0 Sand, gravel. 25 25 Fine to medium brown sand. Sharp gravel, tight. 1.5 26.5 Pumped mostly sand. 5.5 29 ACTON 156. Alt. about 150 ft. Fine to medium brown sand. Driller's log. ACTON 125. Alt. about 210 ft. Started to pump but Loam. 1 1 Driller's log. tightened. 5 34 Sand and gravel, sharp. 25.3 26.3 Fine gray sand changing to Fine brown sand, some gravel. Medium sand and gravel. 15.7 42 medium brown sand. Pumped Started to pump but freely. 21 21 tightened. 6 4o ACTON 157. Alt. about 150 ft. Fine to medium brown sand. Fine brown sand, some gravel Driller's log. Pumped all sand. 5 26 and clay, tight. 5 45 Fine and medium sand. 25.5 25.5 Fine to medium brown sand and Fine to medium brown sand and Fine sand. 25.0 50.5 gravel. Pumped good. 5 31 gravel. Pumped fair. Drove Fine to medium brown sand and bard. 5 50 CONCORD 60. Alt. about 190 ft. gravel. Pumped freely. 5 36 Fine to medium, light brown Driller's log as reported by Medium brown sand and gravel. sand and gravel. Pumped fair owner. Pumped freely. Went off rock pumped sand. Drove hard. 5 55 Sand. 60 60 at 3? ft. Drove hard from Fine to medium brown sand and Hard clay. 13 73 6 42 100 173 Not reported..... 2 44 sand. Pipe not moving at Weight bouncing. at 44 61.8 . 6.8 61.8 CONCORD 102. Alt. about 120 ft. Driller's log. ACTON 126. Alt. about 200 ft. ACTON l4l. Alt. about 180 ft. Loam... 2 2 Driller's log. Driller's log. Fine sand and sharp gravel.... 13 15 Fine to medium brown sand and Gray brown sand and gravel.... 21 21 Sandy yellow clay. 17 32 clay, tight. 25.5 25.5 Sand and gravel. 5 26 Refusal. at 32 Fine to medium gray sand and Brown sand and gravel. 6 32 broken gravel. Pumped good... 6.5 32 Brown sand, some gravel. 5 37 CONCORD 103. Alt. about 120 ft. Weight bouncing. at 32 Some sand and gravel. 5 42 Driller's log. Medium sand and some gravel... 6 48 Medium brown gravel. 10 10 ACTON 128. Alt. about 210 ft. Fine sand.. 17 65 Fine brown sand. 20 30 Driller's log. Fine gray silt. 30 60 Peat. 4 4 ACTON 143. Alt. about 190 ft. Fine gray sand. 10 70 Fine brown sand and gravel. Driller's log. Fine gray gravel. 10 80 Pumped fair--pumped sand. l4 18 Brown sand and gravel. 20 20 Refusal. at 80 Medium brown sand and gravel. Fine sand and gravel. 11 31 Pumped freely. 5-5 23.5 Fine sand and some gravel. 5 36 CONCORD 107. Alt. about 125 ft. Medium brown sand and gravel. Fine sand. 12 48 Driller's log. Pumped good—pumped sand. 5-5 29 Loam... 2 2 Fine brown sand, some gravel Hard yellow clay and sharp and clay. Pumped all sand.... 5 34 gravel. 13 15 Not reported. 1.4 35.4 Fine yellow sand and clay. 4i 56 Weight bouncing. at 35.4 Fine yellow sand.. 11 67 Silky yellow sand. 20 87 Refusal. at 87 25 Table 4.—Logs of selected wells and test wells In the Assabet River basin, Massachusetts—Continued Thick¬ ness Depth Thick¬ ness Depth Thick¬ ness Depth CONCORD 109. Alt. about 125 ft. MARLBOROUGH 3- Alt. about 220 ft. MAYNARD 62. Alt. about 180 ft. Driller's log. Driller's log. Driller's log. Loam. 2 2 Loam. 1 1 Fine sand and brown broken Fine brown sand and small Brown sand, gravel, and gravel. 21.8 21.8 sharp gravel. 13 15 boulders. n 12 Fine brown sand and layers of Fine brown sand and clay. 46 61 Gray sand, gravel, boulders. clay. 8.2 30.0 Silky gray sand. 8 69 and little clay. 14 26 Fine gray sand and clay. 38.3 68.3 Refusal. at 69 Refusal... at 26 Clay and small black broken stone. Drove very hard. 6.4 74.7 HUDSON 3 1 *. Alt. about 220 ft. MARLBOROUGH 4. Alt. about 230 ft. Refusal. at 74.7 Driller’s log. Driller's log. Gravel. 21.0 21.0 Loam. 1 1 MAYNARD 63 . Alt. about 190 ft. Sand, coarse. 4.4 25.4 Brown sand, gravel, and Driller's log. Not reported. 4.3 29.7 boulders.. • • ... i4 15 Sand and gravel... 15 15 Refusal. at 29 . T Fine sand and clay. 18 33 Fine sand and gravel. 8 23 Fine sand, fine gravel, and HUDSON 36. Alt. about 260 ft. clay. 6.7 39-7 MAYNARD 67 . Alt. about 200 ft. Driller's log. Refusal. at 39-7 Driller's log. Clay, gravel, coarse gray. 13 13 Peat. 10 10 Sand, sharp, gray.... 6 29 MARLBOROUGH 6. Alt. about 240 ft. Fine gray sand and clay. 21 31 Not reported. 3-7 32.7 Driller's log. Fine gray sand, some clay and Refusal. at 32.7 Fine brown sand and clay. 27 27 large gravel changing to Fine gray sand and clay. 7 34 brown. 5 36 HUDSON 39- Alt. about 250 ft. Fine sand, fine gravel, and Fine to medium brown sand. Driller's log. clay. 6.4 4o.4 large gravel. Water clayey Clay, sandy, sand, coarse. Refusal. at 4o.4 looking. 6 42 gravel, fine. 19.5 19.5 Fine to medium brown sand and Refusal. at 19.5 MARLBOROUGH 7. Alt. about 210 ft. large gravel. Pumped freely. 5-5 47.5 Driller's log. Fine to medium brown sand and HUDSON 44. Alt. about 205 ft. Loam and gravel. .7 • 7 gravel. Pumped freely. 5-5 53 Driller's log. Sand, gravel, clay, and Fine to medium grayish-brown Gravel. 20.0 20.0 boulders..... 8.3 9 sand and gravel. Pumped Sand, clayey. 18.7 38.7 Sand, gravel, and boulders.... 8 17 freely. 5-5 58.5 Sand, clayey, blue. 6.3 45.0 Fine gray clay.. l4 31 Fine to medium gray sand and Sand, coarse, clay. 3.2 48.2 Brown sandy clay... 53 84 gravel with clay. Tight—no Sand, coarse, sharp. 1.8 50.0 Firm clay and scattered sharp good. 6.5 65 gravel... 3.8 87.8 HUDSON 46. Alt. about 205 ft. Refusal. at 87.8 STOW 73 . Alt. about 205 ft. Driller's log. Driller's log. Gravel. 7.0 7.0 MAYNARD 51. Alt. about 215 ft. Brown fine sand and some Sand, clayey. 29.0 36.0 Driller's log. gravel.... 16 16 Not reported..... 3.5 39-5 Gray sharp gravel, sand and Brown medium sand... 10 26 Refusal... at 39-5 clay. 23 23 Gray fine sand. 9 35 Gray sharp gravel, sand and Brown fine sand. 25.5 60.5 HUDSON 47. Alt. about 205 ft. clay. Tight. 4 27 Driller*s log. STOW 74. Alt. about 205 ft. Sand, clayey. 42.5 42.5 MAYNARD 54. Alt. about 210ft. Driller's log. Clay, hard, sand. 9.0 51.5 Driller's log. Medium to coarse brown sand. Sand, clayey. 1.5 53.0 Brown fine sand and some some gravel. 20 20 Gravel, fine, some clay. 4.2 57-2 gravel... 16 16 Brown fine sand and clay. 12 32 Not reported. 1.0 58.2 Gray fine sand and clay. 46.5 62.5 Fine gray sand and clay. 28 60 Refusal. at 58.2 MAYNARD 55 . Alt. about 190 ft. STOW 75- Alt. about 190 ft. HUDSON 49. Alt. about 200 ft. Driller's log. Driller's log. Driller's log. Brown fine sand. 17 17 Hardpan and gravel. 14 l4 Gravel, coarse. 16.0 16.0 Gray sharp gravel, sand and Clay and fine brown sand and Refusal. at 16.0 clay. 5 22 clay. 26 4o Brown fine sand, some gravel Fine gray sand and clay. 4o 80 HUDSON 53. Alt. 202.0 ft. and clay. 5 27 Driller's log. Brown fine sand and clay. 3 30 STOW 76 . Alt. about 190 ft. Loam. 1.2 1.2 Driller's log. Sand, gravel. 2.4 3.6 MAYNARD 59 . Alt. about l80 ft. Medium to coarse sand. 20 20 Sand, fine. 6.1 9-7 Driller's log. Coarse sand and gravel. 10 30 Sand, water bearing. 15.5 25.2 Topsoil. 1 1 Clay and sand. 1 31 Gravel, sand, fine.. 1.8 27.0 Fine brown sand and clay. l4 15 Coarse sand and gravel. Trace Fine gray sand. 35 50 of clay. Pumped little. 4 35 HUDSON 72. Alt. 201.6 ft. Fine brownish-gray sand and Coarse sand and gravel. Trace Driller*s log. clay. Tight. 15 65 of clay. 5 4o Loam and turf... 1.8 1.8 Fine gray sand and clay. 13 78 Broken gravel, clay. Tight.... 11 51 Sand, fine gravel, clay. 12.3 l4.l Fine gray sand. 11 89 Refusal. at 51 Sand, fine, water bearing. 11.4 25.5 Fine gray sand, little gravel. 2 91 2.9 28.4 20 111 STOW 77 . Alt. about 180 ft. Hardpan. at 28.4 Hardpan, broken stone, and Driller's log. clay. at 111 Topsoil. 2 2 MARLBOROUGH 1. Alt. about 230 ft. Fine to medium brown sand. 16 18 Driller's log. MAYNARD 60. Alt. about 190 ft. Brown clay... 1 19 Loam. 1.5 1-5 Driller's log. Brown medium sand and gravel.. 4 23 Fine sand and fine gravel. 12.5 14 Fill. 4 4 Gray medium sand, some gravel. 5 28 Coarse brown sand and gravel... 6 20 Fine brown sand and clay. 25 29 Gray medium sand, some gravel. Fine gray clayey sand. 16 36 Fine gray sand and clay. 52.6 81.6 trace of clay. 6 34 Fine sand, clay, and sharp gravel. 5 4i MAYNARD 6l. Alt. about 200 ft. STOW 78 . Alt. about 180 ft. Refusal. at 4l Driller's log. Driller's log. Topsoil. 1.0 1.0 Sand. 16 16 MARLBOROUGH 2. Alt. about 220 ft. Medium to coarse sand and Sand, gravel. 5 21 Driller's log. gravel. 9.0 10.0 Sharp gravel, sand, some clay. 5 26 1. S 1. s 12.0 22.0 11 37 Brown sand and gravel. 11.5 13 Fine gray sand and clay. 47.8 69.8 Gray sand, gravel, boulders. Hardpan, broken stone and clay 4.5 74.3 STOW 79 . Alt. about 190 ft. little clay. 6 19 Refusal. at 74.3 Driller's log. Refusal. at 19 Brown sand and gravel, some clay. 16 16 Fine sand and gravel. 5 21 Fine sand. 28.5 49.5 2 6 Table 4.—Logs of selected, wells and test wells in the Assabet River basin, Massachusetts—Continued Thick¬ ness Depth Thick¬ ness Depth Thick¬ ness Depth STOW 80. Alt. about 200 ft. STOW 91 . Alt. about 200 ft. STOW 102. Alt. about 200 ft. Driller's log. Driller's log. Driller's log. Gray sand and gravel. 15 15 Fill. 5 5 Loam and peat. 4 4 Brown sand and gravel. 6 21 Medium brown sand and gravel Fine brown sand, some gravel Brown sand and gravel, some with clay. 15.5 20.5 and clay changing to gray... 22 26 fine sand. 7 28 Fine to medium brown sand and Fine gray sand and large Sand and gravel. 2 30 gravel. Pumped fair. 10.5 31 gravel. Pumped mostly sand.. 25 51 Sharp gravel and sand. 2-5 32.5 Fine brown sand and sharp Fine gray sand and broken gravel with clay. Tight. 10 4l gravel, sane clay. Pumped on STOW 8l. Alt. about l80 ft. Not reported. 1 42 the tight side. 5.5 56.5 Driller's log. Bouncing. at 42 Not reported. 1.1 57.6 Fine sand. 16 16 Bouncing. at 57-6 Fine sand and clay. 22 38 STOW 92. Alt. about 190 ft. Brown gray fine sand and clay.. 13 51 Driller's log. STOW 104. Alt. about 220 ft. Sharp gray sand, gravel and Large gravel and medium brown Driller's log. clay. Tight. 4 55 sand with clay. 18 18 Fine brown sand, large stones. Fine brown sand, gets coarser. some clay. Pumped fair. 20 20 STOW 83. Alt. about 200 ft. Pumped good. 5 23 Fine to medium brown sand and Driller's log. Fine to medium brown sand and large gravel, specks of clay. Sand and gravel. 10 10 gravel. Pumped good. 5 28 Pumped good water, iron Sand and gravel with boulders. Medium brown sand and gravel. taste. 5 25 Pump drove hard.. 6 16 Pumped good at 33 ft. 10 38 Fine brown sand and gravel. Medium sand, gravel and Medium brown sand and gravel. coming into gray sand. 5.5 30.5 boulders. Pump drove hard.... 6 22 Sand gets finer. 6 44 Fine gray sand and clay, no Sand and gravel. 5 27 Not reported. 3 47 good. 45.5 76 Sand and gravel with boulders.. 3.8 30.8 Bouncing.. at 47 Fine gray sand, some blue Gray sand, gravel with clay.... 6.7 37-5 sharp gravel and clay. 2 78 STOW 94. Alt. about 200 ft. Bouncing. No good. at 78 STOW 84. Alt. about 180 ft. Driller's log. Driller 1 s log. Fine to medium brown sand and STOW 106. Alt. about 190 ft. Mud. 2 2 gravel, seme clay. Pumped Driller's log. Gray brown sand and gravel. l4 16 very little sand. Tight. 23 23 Fine brown sand, some gravel Gray sand, gravel and clay. 5 21 Fine to medium gray sand and and clay. Drove hard. Tight. Gray fine sand and clay. 11 32 gravel with clay. Tight. 6 29 No good. 24.5 24.5 Gray sand, gravel and clay. 6 38 Fine to medium gray sand and Bouncing. at 24.5 broken gravel with clay. Tl^it 4 33 STOW 85 . Alt. about 185 ft. Bouncing. at 33 STOW 109. Alt. about 185 ft. Driller's log. Driller's log. Sand and gravel. Tight. 16 16 STOW 95- Alt. about 250 ft. Fine brown sand, some gravel.. 10.0 10.0 Brown medium sand. 6 22 Driller's log. Fine gray sand, some small Brown fine sand. 5 27 Medium brown sand and large gravel mixed with clay. 23.1 33.1 Gray fine sand. 5 32 gravel. Specks of clay Gray fine sand with some clay.. 5 37 turning to gray. Pumped good 23 23 STOW 110. Alt. about 240 ft. Gray fine sand and clay. 15 52 Medium gray sand and large Driller's log. gravel. Pumped good... 5 28 Topsoil. 2 2 STOW 86 . Alt. about 185 ft. Medium gray sand and large Sand and clay. 34 36 Driller's log. gravel, comes into brown Sand, gravel and clay. 16 52 Brown sand and gravel. 16 16 material. Pumped good. 5 33 Hardpan. 4 56 23 39 Sand, gravel and traces of clay 2 4l mixed in. Tightened up. 7 4o Medium sand. 7 48 Not reported. 2.5 42.5 STOW 111. Alt. about 240 ft. Sand, some gravel and traces of Bouncing. at 42.5 Driller's log. clay. 5 53 Topsoil. 1 1 Sharp gravel and fine sand. STOW 98 . Alt. about 220 ft. Sand and gravel. 21 22 Tight. 2.5 55-5 Driller's log. Hardpan. 6 28 Fine to medium brown sand Refusal. at 28 STOW 90. Alt. about 180 ft. and gravel, some clay. Driller's log. Pumped fair. 20 20 SUDBURY 152. Alt. about 175 ft. Medium brown sand and gravel; Medium brown sand and gravel. Driller's log. sand gsts fine, lighter color... 20 20 Pumped good. 16 36 Brown sand. 15 15 Fine brown sand, some small Medium brown sand and gravel. Sharp gravel, sand. Tight. 8.5 23-5 gravel. 11 31 changing to fine gray. 5 4l Fine to medium brown sand, some Fine gray sand, some gravel... 5 46 SUDBURY 153. Alt. about 190 ft. small gravel, specks of clay. Fine to medium gray sand and Driller's log. Pumped very little.’... 5 36 gravel. Pumped fair . 11 57 Fine brown sand. 27 27 Fine to medium brown sand. Fine gray sand, some gravel Fine gray sand and clay. 53 80 large gravel. Pumped fair.... 4.5 40.5 and clay. On the tight side. 5.5 62.5 Medium to coarse brown sand and SUDBURY 154 . Alt. about 190 ft. gravel, sand gets finer. 5-5 46 STOW 101. Alt. about 200 ft. Driller's log. Fine to medium brown sand. Driller's log. Brown sand and gravel. 15 15 Gravel and clay at 50 ft. Peat. 2 2 Brown medium fine sand. 6 21 Tight. 5 51 Fine to medium brown sand and Fine brown sand. 11 32 Fine to medium brown sand and broken gravel with clay. Tight 18 20 Medium brown fine sand. 5 37 broken gravel with clay. Fine brown sand and large Gray fine sand with some Pumped a little. Tight. 5 56 gravel with clay. Pumped all gravel and clay.. 5 42 2 58 6 26 Gray sand, gravel and clay.... 5- 5 47-5 Refusal. at 58 Bounc ing. at 26 27 Table 5-—Logs of selected borings in the Assabet River basin, Massachusetts (Thicknesses and depths below land-surface are given in feet) Thick- : Thick- ness Depth :ness Depth Thick- ness Depth MIDDLESEX COUNTY ACTON a7.—Continued Sand, very fine to fine, gray; U.S. Geological Survey Auger Borings some medium to coarse; some black "chips"; hard drilling al. Alt. about 190 ft. Geologist's log. from 63 to 67 ft. 12 67 Sand, very fine, brown, slightly Refusal. at 67 moist, well sorted, subangular 8 8 Gravel. 1 9 a8. Alt. about 150 ft. Geologist's log. Sand, very fine, brown, moist. Sand, fine, yellow, rounded; well sorted, subangular; trace water at 5«60 ft. 12 12 of silt. 6 15 Sand, fine; some medium to Sand, very fine, brown to gray, coarse sand and gravel; wet, well sorted, subangular. water at l4 ft. 5 17 and silt..... 35 50 Sand, fine to coarse; some Sand, gray, and gravel. 5 55 gravel. 5 22 Sand, very fine gray and silt... 9 64 Sand, fine to coarse, and fine Till. 4 68 to medium gravel; hard Refusal... at 68 drilling from 23 to 27 ft... 5 27 Sand, compact, fine to medium; a2. Alt. about 175 ft. Geologist's log. some gravel and gray clay... 4 31 Sand, fine to very coarse. Refusal. at 31 brown, dry poorly sorted. subangular; fine, subangular a9- Alt. about 155 ft. Geologist's log. gravel. 5 5 Sand, medium to coarse, brown. 7 7 Sand, medium, brown, wet, well Sand, medium tc fine, brown... 5 12 sorted; finer at bottom. 5 10 Gravel, fine to medium, and Refusal. at 10 coarse to medium sand; hard drilling at 15 ft. 12 20 a3. Alt. about 195 ft- Geologist's log. Refusal. at 20 Sand, medium to very coarse. brown, dry, poorly sorted. alO. Alt. about 155 ft. Geologist' s log. subangular to subrounded; Sand, fine, brown; water at fine, brown gravel. 6 6 17 ft. 22 22 Sand, medium, and fine gravel; Sand, medium to coarse; rough well sorted. 2 8 drilling at 25 ft. 20 42 5 47 Silt and fine, gray sand; hard a4. Alt. about 195 ft. Geologist's log. drilling at 69 ft. 22 69 Gravel, hard. 1 1 Not reported. 3 72 Sand, fine to very coarse. Refusal. at 72 brown, dry, subangular to subrounded, and fine, brown all. Alt. about 150 ft. Geologist' s log. gravel; some medium gravel Sand, medium to coarse, brown. 9 9 last 7 ft. less compact and Sand, coarse and fine, clean finer.... 16 17 gravel; water at 15 ft. 8 17 Sand, fine to very fine, light Sand, medium to coarse, and brown, dry, well sorted. 5 22 fine, clean gravel. 15 32 Sand, very fine, slightly moist, Sand, medium to coarse. 5 37 well sorted; trace of very Sand, medium. 5 42 fine gravel. 16 38 Sand, medium to fine, gray; Sand, medium, well sorted; some harder drilling at 44 ft.... 10 52 lenses of coarse sand to fine Not reported. 1 53 gravel; last 6 ft. drilled Refusal. at 53 hard. 11 49 Refusal. at 49 al2. Alt. about 150 ft. Geologist' s log. Sand, fine to very fine, brown; a5- Alt. about 230 ft. Geologist's log. hard drilling at 15 ft; Sandy fill. 3 3 water at 15 ft. 17 17 Sand and gravel. 3 6 Sand, coarse to very coarse. Sand, medium to coarse and fine, and fine to medium gravel... 10 27 brown gravel; water at 10 ft.. 6 12 Sand, fine to coarse. 5 32 Sand, medium to coarse, rounded Sand, fine to medium. 8 40 to subrounded, and fine, brown Refusal. at 4o gravel; less gravel and more fine sand in last 5 ft. 15 27 al3. Alt. about 155 ft. Geologist' s log. Sand, fine to coarse, gray. Sand, medium to fine. 8 8 Harder drilling at 30 ft. 5 32 Sand, fine to coarse, and fine Sand, fine to coarse; some gravel; hard drilling from large, gray, subangular gravel 5 37 8 to 11 ft. 4 12 Sand, fine to coarse, gray. 5 42 Sand, coarse and fine to Sand, fine to medium, gray. 20 62 medium gravel; some medium Sand, compact, fine, gray. 1 63 sand... 5 17 Refusal. at 63 Not reported. 1 18 Refusal. at 18 a6. Alt. about 225 ft- Geologist's log. Fill; water at approximately al4. Alt. about 165 ft. Geologist' s log. 10 ft. 12 12 Sand, fine to very fine and Sand, fine to coarse, rounded to silt; fine gravel. Hard subangular, mostly quartz. drilling at 65 ft. 76 76 phyllite, and mica; some fine Refusal. at 76 gravel. 5 17 Sand, very fine and gray silt... 5 22 al5. Alt. about 170 ft. Geologist' s log. Gravel, probably coarse; hard Sand, coarse, brown; water at drilling from 24 to 26 ft. 4 26 12.4 ft; gravel lense at Refusal... at 26 16 ft. 24 24 Gravel and coarse sand; very a7. Alt. about l60 ft. Geologist's log. hard at 31 ft. 7 31 Sand, all sizes, and fine to Not reported. 2 33 medium gravel; water at 12 ft. 12 12 Refusal. at 33 Sand, fine to coarse, brown. 10 22 Sand, very fine to fine, brown; al6. Alt. about l80 ft. Geologist' s log. some medium to coarse sand.... 5 27 Sand, very fine to fine, brown 2 2 Sand, very fine to fine, brown.. 15 42 Gravel; very hard drilling.... 9 11 Sand, very fine to fine, brown; Till, loose; water at 12 ft... 2 13 some medium to coarse sand.... 13 55 Refusal. at 13 alj. Alt. about 155 ft- Geologist's log. Sand, medium to coarse, brown; water at 10 ft. 12 12 Not reported. 1 13 Refusal. at 13 al8 . Alt. about 155 ft- Geologist's log. Sand, medium, poorly sorted... 12 12 Sand, coarse; water at l4 ft.. 5 17 Sand, very coarse; some fine, brown gravel.. 5 22 Sand, very coarse; some fine, gray gravel; medium hard drilling. 5 27 Sand, very coarse, and fine' gravel; medium to fine sand. 42 69 Refusal. at 69 Mass. Dept, Public Works Bridge Borings A2-1-2 . Alt. 136.3 ft. Driller's log. Fill. 10.0 10.0 Coarse sand and gravel. 5-0 15-0 Sand and gravel. 10.0 25-0 Compact fine sand and clay.... 8.0 33-0 Compact very fine sand and clay. 14.5 47.5 Very compact clay, sand and gravel. 1.3 48.8 Rock obstruction. at 48.8 A2-7-2 . Alt. about 132 ft. Driller's log. Loose, coarse, dirty sand and gravel. 10.0 10.0 Compact fine sharp sand and little clay. 4.3 14.3 Sharp fine sand. 2.7 17-0 Compact sharp fine sand and clay. 3-0 20.0 A2-13-4 . Alt. 143.8 ft. Driller's log. Loam, sand, gravel and boulder fill. 6.5 6.5 Loose sand, gravel and boulders. 4.8 11.3 Fine sand. 5.9 17-2 Coarse sand and little gravel. 11.8 29.0 Sand, gravel, and boulders.... 1.0 30.0 Boulder. at 30.0 A2-29-1 . Alt. 167.1 ft. Driller’s log. Loamy sand. 2.0 2.0 Firm coarse sand. 2.0 4.0 Hard coarse sand and gravel... 7-0 11.0 Hard cemented sand, gravel, and hardpan. 2.5 13-5 Refusal. at 13-5 A2-35-3 . Alt. 240.1 ft. Driller's log. Rip-rap fill. 6.0 6.0 Hard sand and fine gravel, hardpan. 3-5 9-5 Refusal. at 9-5 A2-36-5 . Alt. 210.9 ft. Driller's log. Loamy sand and stones. 1 .5 1-5 Hard sand, gravel and boulders 4.5 6.0 Hard sand, gravel and mica, hardpan. 2.5 8.5 Refusal. at 8.5 A2-37-6 . Alt. 195.7 ft. Driller's log. Sand and gravel fill. 5-0 5-0 Hard coarse sand and gravel... 5-5 10.5 Hard coarse sand, gravel. 1.0 11.5 Refusal. at 11. 5 B0XB0R0UGH U.S. Geological Survey Auger Borings al. Alt. about 235 ft. Geologist's log. Sand, very fine, light brown, moist, well sorted, subangu- lar, predominantly quartz, mica and some mafic. 4 Sand, medium; some lenses of very fine gravel; loose. 17 Sand, coarse, and gravel; hard drilling. 4 Sand, medium and fine gravel; hard drilling. 4 Till: clay, silt, sand, fine gravel; compact; dry. 14 4 21 25 29 43 28 Table 5-— Logs of selected, borings in the Assabet Elver basin, Massachusetts—Continued Thick¬ ness Depth Thick¬ ness Depth Thick¬ ness Depth BOXBOROUGH (Continued) U.S. Geological Survey Auger Borings (Continued) a2 . Alt. about 235 ft. Geologist's log. Sand, fine, brown to light red- brown, moist, relatively well sorted, subangular to subouunded, predominantly quartz and some mica; some very fine to coarse sand; gravel lenses at l 6 , 29 , 34, and 38 ft. 40 40 Boulder. at 40 a3 . Alt. about 235 ft. Geologist's log. Sand, very fine to medium, brown, dry, some quartz and mica. 4 4 Sand, fine to very coarse, and fine, subangular gravel. 2 6 Sand, medium to coarse, and fine gravel; gravel at 18 ft. 15 21 Refusal. at 21 Mass, Dept. Public Works Bridge Borings B18-1-3A . Alt. 227.0 ft. Driller's log. Loamy sand. 2.0 2.0 Hard sand, gravel and boulders. 3-5 5-5 Hard, yellow sand, little gravel. 6.0 11.5 Hard cemented blue sand and fine gravel. 4.5 16.0 Refusal. at 16.0 B18-2-11 . Alt. 281.26 ft. Driller's log. Topsoil. 1.0 1.0 Fine brown sand trace of gravel 4.0 5-0 Fine brown sand, trace of gravel and clay. 5-0 10.0 Fine brown sand, some gravel, trace of clay. 5-0 15.0 Fine to coarse brown sand, some gravel.... 6.3 21.3 Refusal. at 21.3 CONCORD U.S. Geological Survey Auger Borings al . Alt. about 150 ft. Geologist's log. Silt, brown, dry, extremely well sorted; gravel lense at 7 ft. 25 Silt and very fine moist quartz- rich sand; some very fine, green sand; easy drilling.... 15 Sand, very fine to fine, well sorted, 90 percent quartz- rich; intermittent gravel lenses. 14 Gravel, compact, fine to medium; slow drilling. 2 Refusal... a2. Alt. about 130 ft. Geologist's log. Sand, fine to very coarse, brown, dry, poorly sorted, subangular, and fine gravel; hard drilling. 5 Sand, fine to very coarse, and very fine to medium, subangular to subrounded gravel. 5 Sand, fine, well sorted; minor coarse sand from 10 to 15 ft; wet at 40 ft; gravel lenses at 35 and 4l ft. 38 Refusal. aj . Alt. about 128 ft. Geologist's log. Sand, very fine to very coarse, brown, dry, poorly sorted, subangular to subrounded, predominantly quartz and micaj silt; fine gravel. 5 Sand, loose, medium, brown, dry well sorted, subrounded to well rounded, quartz rich; some coarse to very coarse sand. 10 Sand, medium, moist; some coarse to very coarse sand and fine gravel. 5 25 4o 54 56 at 56 5 10 48 at 48 5 15 20 a3 .—Continued Sand, fine, wet and some medium to coarse sand; easy drilling. 5 25 Sand, fine to very fine, slightly green; some silt and coarse sand. 5 30 Clay and green silt; some fine gravel. 4 34 Refusal. at 34 a4 . Alt. about 195 ft. Geologist's log. Sand, very fine to very coarse, brown, dry, poorly sorted, angular to subangular; silt; fine, brown gravel; hard drilling. 10 10 Sand, fine to medium, red- brown; some coarse sand and fine gravel. 1 11 Sand, loose, medium to very coarse, red-brown average sorted, subangular to subrounded, and fine gravel; gravel lense at 14 ft.; some fine sand from 15 to 18 ft; water at 16.8 ft. 7 18 Gravel, medium; some fine sand 2 20 Till: clay, silt, sand and fine gravel. 1 21 Refusal. at 21 Mass. Dept. Public Works Bridge Borings CI 9 - 7 - 3 . Alt. 113.5 ft. Driller's log. Loose, fine, yellow sand and mica; water at 1 ft. 37-0 37-0 Loose, fine, gray sand. 56.0 93-0 C19-8-4 . Alt. 131.5 ft. Driller's log. Sand, gravel and red brick fill. 11.0 11.0 Medium gray sand and silt. 5-0 16.0 Coarse yellow sand and gravel. 7-5 23-5 Fine gray sand, trace of clay. 27*5 51-0 Fine yellow sand, trace of clay..... 4l.O 92.0 Not reported. 1.0 93-0 Refusal.. at 93-0 C19-l 8 - 6 . Alt. 122.9 ft. Driller's log. Sand and gravel fill, soft peat. 5-0 5-0 Hard, coarse sand and gravel.. 8.0 13-0 Hard cemented sand and gravel, hardpan. 5-5 18-5 Refusal. at 18. 5 C19-22-3 . Alt. 138.4 ft. Driller's log. Loose fine sand and gravel fill. 5-5 5-5 Firm, fine, gray sand and little clay; water at 6 ft.. 14.5 20.0 C19-27-2C . Alt. 126.3 ft. Driller's log. Filling. 3.8 3-8 Very fine sand with trace of clay. 8.5 12.3 Silt, sand and some gravel.... 3-2 15-5 Compact sand and gravel. 7-5 23.0 Very compact sand, gravel, and clay. 11.0 34.0 C19-19-1 . Alt. 115 ft. Driller's log. Peat, soft. 4.5 4.5 Sand, hard. 3-5 8.0 Sand, coarse, gravel. 4.5 12.5 Sand, yellow. 3.0 15-5 Sand, gray, clay. 9-5 25 .0 Sand and gravel. 5-5 30-5 Water level. 2.5 HUDSON U.S. Geological Survey Auger Borings al . Alt. about 207 ft. Geologist's log. Sand, loose, very fine, moist, well sorted; some fine to medium sand and silt. 5 5 Sand, fine to very coarse, poorly sorted, subangular to subrounded, and fine gravel; water at 7 ft. 5 10 al.—Continued Sand, fine to medium, well sorted. 4 14 Sand, fine to very coarse and very fine gravel. 1 15 Sand, medium, well sorted; some fine sand; percent of fines increases with depth.. 5 20 Sand, very fine; some silt and fine to medium sand; very hard drilling. 2 22 a2. Alt. about 207 ft. Geologist's log. Sand, loose, fine to very fine, brown, slightly moist. 6 6 Sand, fine to medium; some fine to coarse gravel; hard drilling. 8 14 Refusal. at 14 a3. Alt. about 207 ft. Geologist's log. Sand, fine to very coarse and fine gravel. 5 5 Till: predominantly clay, some sand, and some fine gravel.. 1 6 Refusal. at 6 a4. Alt. about 207 ft. Geologist's log. Sand, loose, fine, brown, dry. 4 4 Gravel lense. 1 5 Sand, fine to very fine, moist; easy drilling. 4 9 Sand, fine to coarse, red, well sorted; some silt; water at 12 ft... 9 18 Till: blue clay, some sand and some fine gravel. 4 22 Refusal. at 22 a5 - Alt. about 215 ft. Geologist's log. Sand, medium, brown, dry, average sorted, quartz-rich; some fine gravel; easy drilling. 15 15 Sand, medium to coarse, well sorted; water at 20 ft. 5 20 Sand, medium, well sorted; some fine sand; intermittent gravel lenses from 30 to 40 ft. 25 45 Sand, medium to very coarse, well sorted, and very fine gravel. 12 57 Till: predominantly clay with admixed gravel. 7 64 Refusal. at 64 Mass. Dept. Public Works Bridge Borings H25-8-3- Alt. about 195 ft. Driller's log. Loose, coarse sand and gravel and stones. 2.0 2.0 Hard sand and gravel. 4.7 6.7 Loose medium sand. 6.3 13-0 Hard, fine sand; little clay and gravel. 4.8 17.8 H25-16-5 . Alt. 207.5 ft. Driller's log. Very soft dark gray sandy silt 5-0 5-0 Loose medium to coarse gray sand. 1.5 6.5 Compact medium to coarse yellow sand, some gravel, trace of fine sand. 6.5 13.0 Loose fine to very fine gray sand, trace of silt. 18.0 31.0 Loose very fine to fine silty gray sand, some medium gray clay. 35-0 66.0 Loose medium to coarse yellow- gray sand, some gravel. 5-0 71-0 Very coarse to coarse gray sand and gravel. 9-0 80.0 Coarse to very coarse gray sand and gravel, trace of medium to fine sand. 10.0 90.0 Very fine silty gray sand, trace of clay. 5-0 95-0 Very fine to fine silty gray sand, trace of gravel and clay. 3-5 98.5 Refusal. at 98 . 5 Water at surface. 29 Table 5.—Logs of selected borings in the Assabet River basin, Massachusetts—Continued Thick ness Depth Thick¬ ness Depth Thick¬ ness Depth HUDSON (Continued) M6-8-16.—Continued 36. Alt. about 285 ft. Driller's log. Fine sand, trace of gravel, Brown coarse sand, some gravel 2.0 2.0 Mass. Dept. Public Works Bridge Borings ’Continued) wet, hard, gray. 5.0 25.0 Hit peat at 6 ft; about 1 ft. Fine sand, some gravel, wet. gray and brown coarse sand. 7.0 32.0 4.0 6.0 Loam. 1.5 1.5 Refusal. at 32.0 Light brown coarse sand, trace Medium to fine yellow sand. of gravel. 5-3 11-3 some fine gravel and coarse M6-9-10A. Alt. 441.9 ft. Driller's log. Red medium fine sand, trace of yellow sand, trace of silt. Medium sand, wet, loose, brown 2.5 2.5 gravel. 5.2 16.5 boulders; water at 7*5 ft.... 7.0 8.5 Fine sand, trace of loam. Very fine silty yellow sand. moist, loose, black. 1.5 4.0 46. Alt. 283.9 ft. Driller's log. some medium yellow clay. 6.5 15.0 Fine sand, trace of gravel. Dark brown silt and peat; Medium yellow clayey silt. moist, firm, yellow. 2.0 6.0 water at 0.5 ft. 7.2 7.2 trace of very fine sand. 6.0 21.0 Fine sand and gravel, dry. Gray brown fine sand, little Medium to fine micaceous yellow hard, yellow. 5.0 11.0 silt. 5-8 13-0 sand, some gravel and coarse Fine sand, trace of gravel and Gray brown fine to coarse sand yellow sand, trace of silt clay, moist, hard, brown.... 2.5 13.5 and gravel, trace of silt... 13.5 26.5 and clay, boulders. 4.5 25.5 Fine sand, trace of gravel, Refusal... at 25.5 dry, very hard, brown. 2.0 15.5 50. Alt. 336.0 ft. Driller's log. Refusal. at 15.5 Medium to fine red brown sand, Mass. Dept. Public Works Roadway Borings trace of fine gravel and M6-10-10. Alt. 465.6 ft. Driller's log. silt. 2.3 2.3 1 . 495 . 5 ( 9)45 Fine sand, some loam, dry. Coarse to fine brown sand. loose, brown. 2.5 2.5 trace of fine gravel and 6lB. Alt. 337.1 ft. Driller's log. Fine sand, some gravel, dry. silt; water at 10.8 ft. Brown fine sand, some silt. hard, yellow. 5-5 8.0 Boulders from l4.8 to l8.8 ft 17.3 19.6 little fine to coarse gravel. 4.5 4.5 Bedrock. 5.0 13.0 Bedrock. 9.0 28.6 Refusal. at 4.5 M6-12-10A. Alt. 304.8 ft. Driller' s log. 57C. Alt. about 290 ft. Driller's log. 1-495-5(11)42 Fine sand, trace of gravel and Brown fine to coarse sand. loam, dry, loose, brown. 3-0 3.0 some fine to medium gravel. 71. Alt. 207-2 ft. Driller's log. Fine sand, trace of gravel. little silt; water at 0.5 ft 3.0 3.0 Peat. 6.3 6.3 dry, firm, yellow. 5.0 8.0 Brown fine to medium sand. Medium to coarse gray sand. 5-7 12.0 Medium sand, trace of gravel. trace of silt and coarse Medium to coarse brown sand and dry, firm, yellow... 5.0 13.0 sand. 10.0 13.0 gravel. 4.5 16.5 Fine sand, some gravel, dry. Bedrock. 8.0 21.0 Water... at 0.0 firm, yellow. 5.0 18.0 Refusal.. at 18.0 62. Alt. 320.1 ft. Driller's log. 76. Alt. 266.6 ft. Driller's log. Topsoil, fine dark-brown sand. Topsoil, fine dark-brown sand. M6-13-3. Alt. 286.1 ft. Driller's log. little silt. 2.0 2.0 little silt coarse to fine Very soft, wet, dark brown, Medium to fine red brown sand, red brown sand, trace of sandy peat; water at .5 ft... 6.9 6.9 trace of silt, coarse to fine silt. 2.0 2.0 Moist, medium dense gray-brown gray brown sand, trace of Coarse to fine gray brown sand. fine to coarse sand and fine gravel and silt. 1.2 3.2 little silt, trace of fine gravel, trace of silt. 5.6 12.5 Bedrock.. 8.0 11.2 gravel and silt; water at Medium dense moist gray fine No water encountered. 3.5 ft. 11.0 13.0 sand, some silt. 16.5 29.0 Coarse to fine gray brown sand, Very dense, moist, gray-brown 65 . Alt. 277.8 ft. Driller's log. little silt, trace of fine fine to coarse sand and Muck and peat; water at gravel and clay; boulders gravel, trace of silt. 2.5 31.5 surface. 9-7 9-7 from 13-3 to 16.3 ft. 8.5 21.5 Gray fine to medium sand, Mass. Dept. Public Works Roadway Borings trace of silt. 6.3 16.0 ======== Brown fine to medium sand. 1-495-5(11)42 trace of silt. 5-5 21.5 LITTLETON 3C. Alt. 464.7 ft. Driller's log. 69 . Alt. 282.3 ft. Driller's log. Mass. Dept. Public Works Bridge Borings Brown fine to coarse sand. 16.0 16.0 Fine to medium brown sand. 3.1 3-1 Gray fine-medium sand, little Fine to medium brown sand; L13-18-5. Alt. 248.4 ft. Driller's log. silt, till, boulder 16 . 0 - 17-1 9-3 27.3 water at 5-1 ft. 6.1 9-2 Loamy sand and stones. 1.5 1-5 Bedrock. 8.0 35-3 Medium to coarse brown sand Hard, coarse sand and gravel... 6.0 7-5 and gravel. 6.8 16.0 Refusal. at 7-5 14. Alt. 437.4 ft. Driller's log. Bedrock. 8.0 24.0 Medium to coarse brown sand and gravel; water at 2.3 ft 9-5 9-5 1 - 495 - 5 ( 7)39 Refusal. at 9-5 MARLBOROUGH 68. Alt. 401.1 ft. Driller's log. 15. Alt. 431.1 ft. Driller's log.. Brown fine to coarse sand. Mass. Dept. Public Works Bridge Borings Medium to coarse brown sand some fine to medium gravel. and gravel. 2.1 2.1 trace of silt. 7.6 7.6 M6-7-8. Alt. 217.1 ft. Driller's log. Fine to medium sand and gravel Rock fragments, little fine to Sandy loam. 2.0 2.0 Water at 3*2 ft. 7.2 9.3 coarse sand, trace of silt.. 5-2 12.8 Medium to fine yellow sand. Bedrock. 8.0, 17.3 Gray fine to coarse sand, some some gravel and coarse yellow fine to medium gravel, rock sand, trace of silt. 4.0 6.0% 16. Alt. 445.6 ft. Driller's log. fragments, trace of silt.... 4.2 17.0 Medium to fine yellow sand. Medium to coarse, brown sand some fine gravel and coarse and gravel; water at 6.9 ft. 23.6 23.6 70A. Alt. 383.1 ft. Driller's log yellow sand, trace of silt... 7.0 13.0 Bedrock. 8.0 31.6 Brown fine to coarse sand. Loose, very fine to fine silty some fine to medium gravel, yellow sand, trace of clay... 10.0 23.0 25 . Alt. 402.3 ft. Driller's log. trace of silt; water at Loose, very fine to fine silty Fine to medium brown sand. 1.1 ft. 2.8 2.8 gray sand, trace of clay. 27.0 50.0 trace of gravel. 3-4 3.4 Gray brown fine to coarse sand Loose fine to very fine silty Fine to medium brown sand and some fine to medium gravel gray sand, trace of clay. 23.0 73.0 gravel; water at 8.7 ft. 13.6 17.0 little silt. 4.6 7.4 Loose very fine silty yellow Decomposed rock. 3-7 20.7 Gray fine to coarse sand. sand, trace of clay. 5.0 78.0 Bedrock. 8.0 28.7 little fine to medium Fine yellow sand, trace of fine gravel and silt. 8.6 16.0 gravel and medium to coarse 32. Alt. 357-5 ft. Driller's log. sand; boulders. 7.0 85 .O Topsoil, fine dark brown sand. 72. Alt. 383.8 ft. Driller's log. Refusal... at 85 .O little silt. 1.2 1.2 Brown fine sand, some coarse Coarse to fine brown sand, sand and fine to medium M6-8-16. Alt. 391.9 ft. Driller's log. trace of fine gravel and gravel, little silt; water Peat, wet, soft, black. 7-5 7-5 silt; water at 1.8 ft. 4.3 5-5 at 1.2 ft. 2.4 2.4 Fine sand and gravel, wet, firm Coarse to fine red brown sand, Brown fine to coarse sand. brown.... 2.5 10.0 trace of fine gravel and some fine to medium gravel. Coarse sand and gravel, wet, silt. 5-5 11.0 trace of silt. 9-5 11.9 loose, gray. 4.0 14.0 Decayed rock. 2.4 13.4 Gray fine to coarse sand, some Medium sand and gravel, stones. Bedrock. 8.0 21.4 fine to medium gravel, trace wet, firm, gray. 6.0 20.0 of silt. 4.1 16.0 30 Table 5*—Logs of selected borings in the Assabet River basin, Massachusetts—Continued Thick¬ ness Depth Thick¬ ness Depth Thick¬ ness Depth MARYBOROUGH (Continued) 27 . Alt. 308 ft. Driller's log. a- 6 . —Continued Topsoil. 1 1 Sand, fine to very coarse. Mass. Dept. Public Works Roadway Borings (Continued) Coarse to fine yellow sand and poorly sorted, and fine gravel, moist, dense. 12 13 gravel..’. 12 65 1-^95-5(7)39 (Continued) Fine gray sand, trace Of Sand, fine to medium, well gravel, moist, very dense... 3 16 sorted. 7 72 74. Alt. 461.7 ft. Driller's log. Not reported. 16 32 Till. 2 74 Brown fine to coarse sand. Bedrock. 20 52 Refusal. at 74 trace of silt, fine gravel a7. Alt. 225 ft. Geologist's log. Brown fine sand, trace of silt Sand, loose, coarse to very and fine gravel. 4.4 6-7 MAYNARD coarse, brown, dry, poorly Brown fine to coarse sand, some sorted, quartz-rich, and fine to medium gravel and Mass. Dept. Public Works Bridge Borings fine gravel; some medium silt; water at 17 ft. 21.4 28.1 sand. 7 7 Gray fine sand, little fine to M10-10-1. Alt. about I 69 .O ft. Driller's log. Sand, fine to medium, well medium gravel, coarse sand Silt, sand and gravel. 5.0 5.0 sorted, some coarse sand. and silt. 5.2 33-3 Lost sample. 4.0 9.0 loose. 8 15 Gray fine to coarse sand. Fine gray sand. 6.0 15.0 Sand, coarse, red-brown, well little fine to medium gravel. Fine brown sand. 4.0 19.0 sorted, some very coarse silt and rock fragments. 8.7 42.0 Coarse sand, fine gravel. 6.0 25.0 sand and very fine gravel. Gray sand, heavy gravel. 5.0 30.0 moist at 20 ft. 10 25 84. Alt. 483*2 ft. Driller's log. Gray sand and gravel. 3-7 33.7 Sand, coarse, well sorted. Brown fine to coarse sand, some Refusal. at 33.7 some medium sand, becoming fine to medium gravel. 2.7 2.7 finer with depth, gravel Brown fine to coarse sand, some Ml0-1-11 A. Alt. 173.8 ft. Driller s log. lense from 57 to 60 ft. 36 61 fine to medium gravel, some Sand, coarse, dirty, gravel... 6.8 6.8 Till. 5 66 silt. 19.8 21.5 Sand, coarse, gravel. 4.2 11.0 Refusal. at 66 Gray fine to coarse sand, fine Sand, fine, blue, clay. 4.0 15.0 to medium gravel and silt; Sand, fins, blue, gravel. a8. Alt. 195 ft. Geologist's log. water at 22 ft... 12.9 34.4 hardpan. 2.3 17.3 Sand, fine to very coarse, Brown fine to coarse sand, some Rock or boulder. at 17-3 light brown, dry, poorly fine to medium gravel and sorted, subangular and fine Gray fine to coarse sand, some gravel. 3 3 fine to medium gravel and STOW Sand, medium well sorted; silt. 7.8 45.2 some fine to coarse sand.... 1 4 Gray fine to coarse sand, some U.S. Geological Survey Auger Borings Sand, fine to very coarse, fine to medium gravel, trace olive-brown, and fine gravel of silt, rock fragments. 2.8 48.0 al. Alt. 265 ft. Geologist's log. very hard drilling. 2 6 Sand, very fine to very coarse 96 . Alt. 46l.O ft. Driller's log. brown, and fine gravel; some a9- Alt. 195 ft. Geologist's log. Fine red-brown sand, trace of silt and clay; percent of Sand, fine to very coarse. silt. 2.0 2.0 silt and clay increases with light brown, dry, poorly Coarse to fine light brown depth. 15 15 sorted, subangular to 5.0 7-0 15 Coarse to fine brown sand. extremely slow drilling. 5 5 trace of medium to fine a2. Alt. 265 ft. Geologist's log. gravel, little silt; water Silt and moist, brown, very alO. Alt. 188 ft. Geologist's log at 9-0 ft.; boulder at fine sand; easy drilling.... 5 5 Sand, loose, medium, brown. 10.5 ft. 9.0 16.0 Silt and gray, very fine sand; dry, moderately sorted. gravel lenses at l6 and subangular to subrounded. Metropolitan District Commission Tunnel Borings 26 ft. 27 32 quartz-rich; sane fine sand Refusal. at 32 and fine gravel. 5 5 Wachusett-Marlborough Tunnel, Contract 283 Sand, very fine to very coarse a3. Alt. 275 ft. Geologist's log. brown, dry, poorly sorted. 24. Alt. 245.0 ft. Driller's log. Sand, medium to very coarse, and fine gravel; some silt.- 6 11 Peat. 1 1 brown, and fine gravel. 5 5 Silt, stiff, and dry, gray Gray and yellow clay; moist. Sand, medium, brown, moist. clay. 3 l4 stiff. 6 7 well sorted; easy drilling. 20 25 Sand, compact, very fine to Gray clay, trace of coarse Sand, fine to very fine, well very coarse, dry, and fine sand, moist, very stiff. 6 13 sorted; gravel lenses at gravel; some silt. 2 16 Gray coarse sand, some medium 34 and 36 ft. 13 38 Silt and clay. 4 20 gravel, moist, very dense.... 5 18 Clay; water at 25 ft. 10 30 Gray coarse sand and gravel..'.. 2 20 a4. Alt. 215 ft. Geologist's log. Refusal. at 30 Bedrock. 32 52 Sand, fine to very coarse. green, moist, poorly sorted. all. Alt. 220 ft. Geologist's log 25 . Alt. 260.0 ft. Driller's log. and fine to medium gravel; Gravel; water at 11 ft. 21 21 Loam.. 1 1 "crunchy" drilling. 5 5 Sand. 9 30 Gray medium to fine sand, trace Sand, fine to medium, poorly Gravel. l4 44 of silt, trace of gravel. sorted; some gravel and Refusal. at 44 moist, medium density........ 6 7 minor silt; loosely packed.. 35 4o Gray medium to coarse sand. Peat, brown. 23 63 Mass. Dept. Public Works Bridge Borings trace of silt, trace of Till: heterogenous mixture of gravel, moist, very stiff.... 7 14 clay, silt, sand, and S29-1-7. Alt. 181.7 ft. Driller's log. Boulders.. 2 16 gravels. 2 65 Sand, loam. 1.5 1-5 Gray coarse sand, rock Refusal... at 65 Sand. 4.0 5-5 fragments, moist, very dense. 4 20 Sand and gravel. 2.5 8.0 Bedrock. 30 50 a5- Alt. 242 ft. Geologist's log. Sand. 3.0 11.0 Sand, very fine to very Sand, rock. 2.0 13.0 26. Alt. 260.0 ft. Driller's log. coarse, light brown, dry. Refusal. at 13.0 Swamp. 2 2 poorly sorted, subangular to Gray medium to fine sand, trace subrounded; fine gravel. 5 5 S29-5-2. Alt. 218.5 ft. Driller's log. of gravel; trace of silt; wet Refusal on large boulders. at 5 Fill. 6.5 6.5 loose... 5 7 Mud. 3.5 10.0 Gray fine sand and silt; wet. a6. Alt. 242 ft. Geologist's log. Compact sand with gravel. 6.0 16.0 loose... 7 14 Not reported. 5 5 Refusal. at 16.0 Brown coarse to fine sand, Sand, loose, fine to very trace of gravel, moist, dense 5 19 coarse, brown, dry, poorly Brown coarse to fine sand. sorted, subrounded to trace of gravel, rock subangular, and fine gravel. 15 20 fragments, moist, very dense. 4 22 Sand, fine, well sorted; some Bedrock... 30 52 fine gravel; moist at 30 ft. 15 35 Sand, fine to medium well sorted, micaceous. 10 45 Sand, fine, extremely well sorted; water at 48 ft. 8 53 31 Table 5*—Logs of selected borings in the Assabet River basin, Massachusetts—Continued Thick¬ ness Depth Thick¬ ness Depth Thick¬ ness Depth WESTFORD a4. Alt. about 205 ft. Geologist' s log. : a8. Alt. about 185 ft. Geologist's log. Gravel, coarse, dry; some : Sand, loosely packed, very fine U.S. Geological Survey Auger Borings poorly sorted, angular, fine : brown, moist, well sorted. sand to medium gravel... 7 7 : subangular to subrounded; al. Alt. about 205 ft' Geologist's log. Till: silt to fine gravel. 2 9 : intermittent gravel from 5 to Not reported. 3 3 Refusal. at 9 : 10 ft.; water at 8 ft. 10 10 Sand, medium to very coarse. : Silt; some sand and gravel. 5 15 well rounded; some fine sand a5. Alt. about 205 ft. Geologist' s log. : Sand, loosely packed, fine to and gravel. 4 7 Sand, fine to very coarse. : medium, subrounded, some fine Sand, medium, well sorted, rounded brown, and fine gravel. 6 6 : and seme coarse sands; gravel slightly mafic; minor gravel.. 3 10 Sand, coarse, slightly moist. : lense at approximately 19 ft. 10 25 Sand, medium; intermittent well sorted, and fine : Sand and gravel. 11 36 gravel lenses; water at 11 ft. 4 14 gravel... 2 8 : Refusal. at 36 Refusal on large boulder. at 14 Gravel, well sorted; some sand. 2 10 Refusal. at 10 : Mass. Dept. Public Works Bridge Borings a2. Alt. about 205 ft. Geologist's log. Gravel. 3 3 a6. Alt. about 225 ft. Geologist' s log. : W26-18-13. Alt. 224.2 ft. Driller' s log. Sand, medium, subrounded; some Silt and brown, very fine sand. 3 3 : Soft loam; water at surface.... 3.5 3-5 medium gravel and very fine Sand, loose, very fine, light : Medium to fine yellow sand. to fine sand... 2 5 brown, dry, well sorted. 7 10 : trace of gravel, coarse sand Sand, medium, well sorted, Till: subangular, poorly sorted : and silt, boulders, moist.... 8.0 11.5 subrounded to rounded, quartz- slightly moist, brown, fine : Coarse to medium yellrw sand; fine rich; some medium to coarse sand to fine gravel. 2 12 : gravel, traceoffine sard, silt sand and fine gravel from 8 to Refusal. at 12 : and mica flakes, boulders;wet 12.5 24.0 10 ft.; some mafic material... 5 10 : Compact fine to medium yellow Silt and very fine sand. 1 11 a7. Alt. about 195 ft. Geologist' s log. : sand, trace of coarse sand. Refusal. at 11 Not reported. 7 7 : silt, and mica flakes; moist. 3.5 27.5 Sand, loosely packed, very fine : Refusal. at 27.5 a3. Alt. about 205 ft. Geologist's log. brown, slightly moist, and Sand, loose, medium, dry, well silt; intermittent gravel : W26-22-19. Alt. 244.5 ft. Driller' s log. sorted, subrounded; some fine lenses; water at 10 ft. 18 25 : Loam. 1.0 1.0 gravel. 5 5 Gravel, subangular; some sand.. 8 33 : Very fine gray sand and clay. Sand, very fine to medium, moist Gravel, compact, well sorted, : trace of silt. 1-5 2.5 subangular; some coarse sand rounded. 10 43 : Fine to medium yellow sand,fine and fine aravel; some silt.... 5 10 Refusal. at 43 : gravel, trace of silt and clay 4.5 7-0 Till: wet, yery fine^sand with some angular gravel. 1 11 : Soft gray sandy clay, trace of Refusal. at 11 : gravel. 5.0 12.0 WORCESTER COUNTY BERLIN B9-19-101. Alt. 324.2 ft. Driller s log. 101. Alt. 324.2 ft. Driller's log. Black, sandy peat and mud. 4.4 4.4 Black sandy peat and mud; water Mass. Dept. Public Works Bridge Borings Gray-brown fine sand. 16.6 21.0 at 0.7 ft. 4.4 4 4 Brown fine to medium sand. 5-5 26-5 Gray brown fine sand. 16.6 21.0 B9-2-3A. Alt. 245.9 ft. Driller's log. Brown, fine to medium sand. 5-5 26.5 Loam, peaty; water at 2 ft. 2.5 2.5 Mass. Dept. Public Works Roadway Borings Coarse yellow sand and gravel... 2.5 5.0 103. Alt. about 325 ft. Driller's log. Fine gray sand and gravel. 4.5 9-5 1-495-5(11)42 Peat; water at surface. 16.5 16.5 Fine yellow sand, gravel. Silt, trace of peat, black. 10.3 26.8 boulders and little clay. 3.5 13.0 78 . Alt. 235.0 ft. Driller's log. Black silt. 2.4 29.2 Fine gray sand and little clay.. 3.0 16.0 Dark brown peat; water 0.3 ft* Gray silt; fine brown sand. 4.8 34.0 Gray sand, gravel and boulders.. 17.0 33.0 above ground level. 3-0 3.0 Medium to coarse brown sand. Gray sand, gravel and boulders.. 2.0 35-0 Gray fine sand, little silt.... 4.0 7.0 trace of gravel. 3-0 37-0 Refusal. at 35-0 Brown fine to medium sand, little silt, trace coarse 104. Alt. 324.4 ft. Driller's log. B9-6-2. Alt. 210 ft. Driller's log. sand. 9.1 16.1 Black peat; water at 0.3 ft.... 5.0 5.0 Fine loamy sand. 7.5 7-5 Refusal. at 16.1 Brown fine to coarse sand and Fine yellow sand and gravel. 8.0 15.5 fine gravel. 16.5 21.5 Coarse sand, little gravel. 82. Alt. 308.2 ft. Driller's log. little clay. 11.5 27 .O Brown fine to coarse sand and 1-495—5( 9 )45 Fine yellow sand, little clay... 8.0 35-0 gravel, trace of silt. 4.0 4.0 Hard blue sand and gravel. Bedrock. 8.0 12.0 2 DAM. Alt. 387 .O ft. Driller's log. little clay. 12.0 47.0 No water encountered. Brown fine sand, some silt, little coarse to fine gravel. 2.0 2.0 B9-12-2. Alt. 216.9 ft. Driller's log. 84. Alt.294 .7 ft. Driller's log. Brown fine to medium sand. Sand and gravel and boulders.... 9.5 9-5 Brown fine to coarse sand. little silt and fine to Very fine gray sand with traces some fine to medium gravel. coarse gravel. 12.0 14.0 of clay. 19.0 28.5 trace of coarse gravel; Refusal. at 14.0 Hard fine sand and gravel with water at 3*7 ft. 5.0 5.0 boulders. 6.0 34.5 Gray brown fine to coarse sand 3 DAM. Alt. 395 ft. Driller's log. Refusal. at 34.5 and fine to medium gravel, Brown fine sand, some silt. boulder fragments. 5.0 10.0 trace of fine gravel. 2.5 2-5 B9-14-1. Alt. 490.2 ft. Driller's log. Gray-brown fine sand and silt. Medium yellow sand, gravel and 89 . Alt. 378.6 ft. Driller's log. trace of fine to coarse boulders. 6.0 6.0 Medium to fine red-brown sand. gravel. 19 . 5 22.0 Compact yellow sand, gravel and trace of silt. 2.0 2.0 Gray-brown fine sand and silt. boulders... 5.0 11.0 Coarse to fine gray-brown sand, some coarse to fine gravel... 3.0 25.0 Refusal. at 11.0 trace of fine gravel and silt broke boulder at 5*0 ft.; 2A. Alt. 382.1 ft. Driller's log. B9-17-12. Alt. 362.1 ft. Driller's log. water at 8.4 ft. 10.9 12.9 Brown silt, little fine sand... 5.0 5.0 Fine sand, some gravel, dry. Bedrock. 8.0 20.9 Till, brown fine sand and silt. firm, brown. 12.5 12.5 trace of fine to coarse Fine sand, trace of fine gravel. 91. Alt. 371.3-ft. Driller's log. gravel, cemented; no water moist firm brown. 8.5 21.0 Medium to fine red-brown sand. 8.0 13.0 Refusal. at 21.0 trace of silt. 2.0 2.0 Coarse to fine gray-ljrown sand. 6b. Alt. 398.0 ft. Driller's log. B9-18-16. Alt. 341.4 ft. Driller's log. trace of fine gravel and Brown fine sand, some silt, Peat, wet, very soft, black; silt; water at 6.3 ft. 12.2 14.2 trace of coarse gravel. 4.0 4.0 water at 0.5 ft. 5.0 5.0 Bedrock. 8.0 22.2 Brown fine to medium sand, Fine sand, trace of gravel. little silt and coarse to moist, firm, brown. 3.0 8.0 96 c. Alt. 359-0 ft. Driller's log. fine sand. 2.0 6.0 Fine sand, trace of inorganic Gray-brown fine to coarse sand. Refusal, no water encountered.. at 6.0 silt, wet, loose, gray. 6.0 l4.o fine to medium gravd, trace Coarse sand, gravel, some of silt; boulder at 8.4 ft... 9.4 9.4 stones, moist, hard, brown.... 5-5 19-5 Gray-brown fine to coarse sand. Coarse sand, some gravel and fine to medium gravel, trace stones, wet, hard, brown. 5.0 24.5 of silt, some decomposed rock 4.6 14.0 Refusal. at 24.5 Bedrock, no water encountered.. 6.8 20.8 32 Table 5-—Logs of selected borings in the Assabet River basin, Massachusetts—Continued Thick* ness Depth Thick¬ ness Depth Thick¬ ness Depth BERLIN (Continued) 8. Alt. 365.C ft. Driller's log. B15-3-11. Alt. 347.2 ft. Driller' s log. Brown, medium to fine sand and Sandy loam. 1.0 1.0 Mass. Dept. Public Works Roadway Borings [Continual) medium to fine gravel, very Medium to fine yellow sand. dense, moist. 5.5 5-5 some gravel and coarse sand, 1-495-5( 9 )45 (Continued) Brown fine sand and large boulders. 7-0 8.0 boulders. 13.5 19 Compact medium to coarse 7 . Alt. 1+35 ft. Driller's log. Brown medium to fine sand and yellow sand and gravel. Brown fine sand and decomposed gravel, some gray rock trace of fine sand, boulders 15.0 23.0 mica schist, little coarse fragments, very dense, moist 4.5 23.5 Medium to fine micaceous gravel, trace of silt. 5.0 5.0 Gray medium to fine sand and yellow sand, some gravel and Pink quartz to mica schist. gravel, some rock fragments. coarse sand. 19.0 42.0 very seamy, soft; water very dense, staggered level at 7.0 ft. 8.0 13.0 boulders. 27.0 4o.5 B15-4-12. Alt. 359.7 ft. Driller' s log. Bedrock.... 299.5 34o Fine sand, some gravel, dry. 23. Alt. 430.6 ft. Driller's log. firm, brown. 3.0 3.0 Brown fine sand, little silt... 7-5 7-5 9. Alt. 365 ft. Driller's log. Fine sand, some gravel and Gray-white mica schist, very Brown medium to fine sand. stones, dry, very hard. seamy, medium-hard and some gravel and silt, loose. 9 9 brown. 4.5 7-5 fractured; water at 8 ft. 7-7 15.2 Bedrock. 24 33 Refusal. at 7-5 42. Alt. 369.2 ft. Driller's log. 10. Alt. 281.0 ft. Driller's log. B15-5-3. Alt. 337-8 ft. Driller’s log. Brown, loamy, fine sand. 2.5 2.5 Black loam, peat.. 3 3 Wet, loose swamp vegetation. Brown fine to medium sand, Medium to fine sand and gravel peat. 1.5 1-5 boulders, trace of fine staggered boulders, very Wet, loose, gray, fine to gravel and silt. 13-5 16.0 dense.. 12 15 coarse sand, little silt.... 16.5 18.0 No water encountered. Bedrock. 30.5 ^5-5 Wet, medium dense, gray, medium to coarse sand, 56 . Alt. 372.0 ft. Driller's log. ---= little fine sand, little Brown fine to medium sand, some silt, trace of fine to fine to medium gravel, trace BOLTON medium gravel, very dense... 26.5 44.5 of silt. 7.0 7.0 Gray mica-schist with quartz. U.S. Geological Survey Auger Borings very seamy—sand seams medium BI 5 - 6 - 2 . Alt. 337.6 ft. Driller's log. hard to soft to medium hard.. 10.0 17.0 al. Alt. about 251 ft. Geologist's log. Wet, soft, brown, organic peat 2.0 2.0 No water encountered. Gravel, brown, dry, subangular Wet, medium dense, gray, fine some sand... 5 5 to coarse sand, some fine to 64. Alt. about 3^2.2 ft. Driller's log. Sand, compact, very fine to coarse gravel and silt. 2.0 4.0 Organic peat; water at surface. 19-5 19-5 very coarse, poorly sorted, Wet, dense, gray-brown fine Gray fine to medium sand, some and fine gravel; water at sand, little silt. 10.5 l4. 5 medium fine gravel, little 11.5 ft. 30 35 Wet, dense, brown, fine to silt. 1-5 21.0 Gravel, fine, well sorted. coarse sand, little fine to Brown fine to coarse sand, some subrounded, and some coarse coarse gravel and silt. 8.5 23.0 medium to fine gravel, little sand. 2 37 Wet, medium dense, gray, fine silt. 10.0 31.0 Sand, medium to very coarse. sand, sane silt. 16.0 39-0 well sorted, subrounded. Moist, very dense, gray, 67 . Alt. about 342.1 ft. Driller's log. very fine gravel. 5 42 coarse to fine gravel, some Brown organic peat; water at Till: predominantly sand. 3 45 fine sand and silt. 2.0 4i.O surface. 19.0 19.0 Refusal. at 45 Gray fine to coarse sand, some B15-7-111. Alt. 326.0 ft. Driller 's log. coarse to fine gravel, little Mass. Dept. Public Works Bridge Borings Peat, some muck. 4o.o 40.0 silt. 3.0 22.0 Muck, some peat. 3.0 43.0 Brown fine to coarse sand, B15-2-3C. Alt. 331.9 ft. Driller's log. Wet, gray, silt, some sand.... 4.0 47.0 coarse to fine gravel, trace Compact sand, gravel, and Wet, fine, some coarse gray of silt. 8.0 30.0 boulder fill. 6.5 6.5 sand, some gravel... 8.0 55-0 Soft, gray, peaty, silt. 1.0 7-5 Metropolitan District Commission Tunnel Borings Coarse to very coarse gray B15-8-37. Alt. 294.0 ft. Driller' s log. sand, some fine gravel. Muck and peat. 19.0 19.0 Wachusett-Marlborough Tunnel, Contract 283 trace of medium to fine Wet, gray silt, sand and 4.5 12.0 1.0 20.0 2. Alt. 354.5 ft. Driller's log. Compact fine to medium gray Moist, fine, trace of coarse Qray, coarse to fine sand and sand, some fine gravel. brown sand. 4.0 24.0 gravel, dry. 7-0 7.0 trace of coarse sand and Wet, fine, trace of coarse silt. 3.. 5 15.5 10.0 34.0 little gravel, dry. 5.0 12.0 Coarse to medium yellow sand Brown, coarse to fine sand and and gravel, trace of fine Mass. Dept. Public Works Roadway Borings 5-0 17.0 4. 5 20.0 Brown, medium to fine sand, Compact medium to coarse l-495-5(9)45 rock fragments. 2.0 19.0 yellow sand, some gravel. Bedrock. 30.0 49.0 trace of fine sand and silt, 70. Alt. about 345 ft. Driller's log. boulders. 8.0 28.0 Brown organic peat; water 4. Alt. about 335 ft. Driller's log. Loose medium to fine yellow 0.5 ft. above lsd. 33 33 Black silty fine sand. 6 6 sand, some fine gravel, trace Gray fine to coarse sand and Brown coarse to fine sand. 8 14 of coarse sand and silt. 4.5 32.5 medium to fine gravel, Bedrock. 308 322 Medium to fine yellow sand. little silt. 10 43 some fine gravel and coarse 5 . Alt.about 455 ft. Driller's log sand, trace of silt, boulders 7.5 4o.o 81. Alt. 342.0 ft. Driller's log. Brown medium to fine sand, some Refusal. at 40.0 Brown organic peat; water at gravel and silt, dense. 10 10 surface. 12.5 12.5 Greenish, medium to fine sand, B15-3-6. Alt. 352.4 ft. Driller's log. Gray coarse to fine sand, some some gravel and silt, very Sandy loam. 1.0 1.0 coarse to fine gravel, dense. 7-5 17.5 Medium to fine micaceous yellow little silt. 12.5 25 .O Bedrock. 15-0 32.5 sand, trace of fine gravel and coarse sand, trace of j)2. Alt. 342.6 ft. Driller's log. 6. Alt. 425.0 ft. Driller's log. silt. 6.5 7.5 Brown organic peat; water Brown fine sand, trace of Fine to medium micaceous yellow 0.5 ft. above surface. 10.0 10.0 gravel, very dense. 8 8 sand, trace of fine gravel. Gray fine sand and silt, trace Brown medium to fine sand. coarse sand and silt. 3.0 10.5 of fine gravel. 1.5 11.5 trace of gravel, decayed rock Loose fine to very fine yellow Brown fine to medium sand, and very dense... 3 11 sand, trace of fine gravel little silt. 8.5 20.0 23.5 34.5 4.5 15.0 Loose medium to coarse yellow 96 . Alt. 345.2 ft. Driller's log. 7. Alt. 363.0 ft. Driller's log. sand, trace of fine sand. 3.0 18.0 Brown organic peat; water 8 .8 8.5 8.5 Bedrock; water at 3-0 ft. 26.7 27.5 sand, some coarse sand, trace Gray fine to coarse sand, some of gravel, boulders. 5.0 23.0 coarse tp fine gravel. Compact medium to fine yellow little silt. 7.5 16.0 sand, trace of gravel and Refusal. at 16.0 coarse sand, boulders. 4.5 27.5 Rock, gray phyllite, fractured. 5.0 32.5 33 Table 5*--Logs of selected borings in the Assabet River basin, Massachusetts—Continued Thick¬ ness Depth Thick¬ ness Depth Thick¬ ness Depth BOLTON (Continued) 108. Alt. 325.7 ft. Driller's log. H9-21-5. Alt. 241.1 ft. Driller's log. Peat. 27.0 27.0 Very soft dark brown to black Mass. Dept. Public Works Roadway Borings (Continued) Wet, loose, fine and coarse silty peat. 10.0 10.0 gray sand. 3.0 30.0 Loose medium to fine micaceous 1-495-5( 9 )45 (Continued) Wet, fine and coarse, gray yellow-gray sand, trace of sand, trace of gravel. 7.0 37.0 fine gravel. 5-5 15-5 102. Alt. 359-3 ft. Driller's log. Wet, fine and coarse gray sand Coarse to very coarse yellow- Brown fine sand, little silt_ 4.0 4.0 and some gravel. 3.0 4o.O gray sand and gravel, trace Brown fine to medium sand, of medium to fine sand. little fine to medium gravel. 113. Alt. 326.8 ft. Driller's log. boulders. 7-5 23.0 silt. 5.0 9.0 Peat, some muck; water at Loose, coarse yellow sand and Refusal... at 9.0 surface.. 4o.o 40.0 gravel, some medium to fine No water encountered. Wet, coarse, some fine gray sand. 5-0 28.0 sand, some gravel. 10.0 50.0 Loose, very coarse to coarse 105. Alt. 338.7 ft. Driller's log. gray sand and gravel, trace Brown organic peat; water 123. Alt. 329.2 ft. Driller's log. of medium to fine sand. 6.0 34.0 2.0 ft. above lsd. 3.0 3.0 Peat. 8.0 8.0 Refusal. at 34.0 Brown fine to medium sand, Very loose, wet, fine and trace of silt. 7.0 10.0 coarse gray sand, some Mass. Dept. Public Works Roadway Borings Brown fine to medium sand, gravel. 16.0 24.0 trace of fine to medium Wet, fine and coarse gray sand 1-495-5(10)48 gravel and silt... 3.0 13-0 and gravel. 4.0 28.0 j>6. Alt. 320.5 ft. Driller's log. 108. Alt. 337-8 ft. Driller's log. 127. Alt. 345.8 ft. Driller's log. Silty brown sand.. 3.0 3-0 Swamp vegetation, peat; water Fine, dark brown sand and Compact brown sand, some 1.0 ft. above surface. 1.5 1-5 gravel. 7.0 7.0 gravel, and boulders. 3.0 6.0 Gray, fine to coarse sand. Fine, dark brown sand and Refusal. at 6.0 little silt. 1-5 3.0 gravei, some boulders. 2.0 9.0 No water encountered. Gray silt, little fine sand.... 12.0 15.0 Refusal... at 9.0 Gray fine to coarse sand. No water encountered. 80. Alt. 271.7 ft. Driller's log. 2.0 17.0 7.0 7.0 131. Alt. 316.3 ft. Driller's log. Fine brown sand, trace of silt 112. Alt. 362.4 ft. Driller's log. Loose, fine brown sand, trace and gravel; water at 11.0 ft 18.0 25.0 Vegetation, topsoil, 6 in. of of silt and gravel. 8.0 8.0 Compact brown sand and gravel. 1.0 26.0 brown fine sand, trace of Fine, brown sand, some gravel. 6.0 14.0 Refusal.'. at 26.0 silt and fine gravel. 3.0 3.0 Compact brown sand and gravel. 4.0 18.0 Brown fine to coarse sand, some Refusal. at 18.0 82. Alt. 272.2 ft. Driller's log. fine to medium gravel, trace Fine brown sand, some silt.... 1-5 1-5 of silt. 5.5 8-5 133. Alt. 293.8 ft. Driller’s log. Brown sand and gravel. 1-5 3.0 Gray-white mica schist, very Muck and peat; water at Brown sand, some gravel, and seamy, fractured, medium hard 8.0 16.5 surface... 25.0 25.0 boulders... 5.0 8.0 No water encountered. Peat, some silt. 4.0 29.0 Refusal. at 8.0 Wet silt—some soft gray clay. 3.0 32.0 No water encountered. 138 . Alt. 390.7 ft. Driller's log. Wet, fine and coarse gray sand 6 in. vegetation, topsoil. and some gravel. 10. a 42.0 86. Alt. 272.4 ft. Driller's log. brown fine to medium sand.... 3.0 3.0 Brown sand, silt, boulders.... 3.0 3-0 Fine to medium sand, some fine 209. Alt. about 330 ft. Driller's log. Compact brown sand, gravel. to medium gravel, trace of Black silt, some sand; water boulders. 2.0 5-0 rock fragments. 4.0 7-0 at 0.5 ft. 2.0 2.0 Refusal. at 5-0 Gray mica schist, quartz Wet, fine and coarse brown No water encountered. medium hard, seamy; water at sand and gravel. 3.0 5.0 8.0 ft. 8.0 15. o, Wet, coarse, some fine brown l6l. Alt. 302.0 ft. Driller's log. sand... 12.0 17.0 Wet, fine brown sand, some 143. Alt. 351-4 ft. Driller’s log. Wet, brown sand and gravel.... 9.0 26.0 'silt, trace of gravel. 2.0 2.0 Brown fine sand, some fine to Brown sand, some gravel. Refusal. at 6.0 at 4.0 ft. 6.0 8.0 No water encountered. CLINTON Refusal... at 8.0 1-495-5(10)48 Metropolitan District Commission Tunnel Borings 167 . Alt. 319.9 ft. Driller's log. Fine brown sand, some silt. 1. Alt. 373.9 ft. Driller's log. Wachusett-MarThorough Tunnel, Contract 2o3 scattered boulders. 4.0 4.0 Fine brown sand, some silt. 3.0 3.0 Fine brown sand, some gravel. Boulder... 2.0 5.0 3. Alt. 355-0 ft. Driller's log. scattered boulders. 8.0 12.0 Medium to hard gray rock........ 8.0 13.0 Brown, medium to fine sand; Compact fine brown sand, some No water encountered. medium density, moist. 17.0 17.0 ■ clay, trace of gravel. 15.0 27.0 Black, fine sand. 2.0 19.0 Compact brown sand, some 2. Alt. 333.1 ft. Driller's log. Bedrock. 30.0 49.0 gravel and clay. 3.0 30.0 Loose brown sand, some silt, No water encountered. and boulders. 8.0 8.0 ========================== ===== Brown sand,, some gravel. 2.0 10.0 175 . Alt. 339-5 ft. Driller's log. Refusal. at 10.0 HARVARD Fine, brown sand, some silt. No water encountered. boulders. 4.0 4.0 U.S. Geological Survey Auger Boring S Brown sand, sane gravel, and 11. Alt. 335-8 ft. Driller's log. boulders. 7.0 11.0 Dark brown sand and gravel. 4.0 4.0 al. Alt. about 235 ft. Geologist's log. Boulders. 2.0 13.0 Compact brown sand, gravel, and Sand, brown, wet; silt; fine Fine brown sand and clay, some boulders. 2.0 6.0 gravel. 5 5 gravel, scattered boulders.. 7.0 20.0 Refusal. at 6.0 No Sample: probably loose Boulder. 1.0 21.0 No water encountered. sand and gravel. 24 29 Fine brown sand, some clay Gravel, extremely well sorted. 3 32 and gravel, scattered 4l. Alt. 293.3 ft. Driller's log. Sand and gravel. 2 34 boulders. 4.0 25 .O Muck and peat. 53.0 53-0 Gravel, fine, blue-gray, well Boulder. 1.0 26.0 Wet fine gray and brown sand... 4.0 57-0 sorted; some sand. 2 36 Fine brown sand, some clay and Wet, fine to coarse brown sand. Refusal... at 36 gravel, scattered boulders.. 9.0 35-0 some gravel. 9.0 66.0 Bedrock. 8.0 43.0 Mass. Dept. Publie Works Bridge Borings No water encountered. 46. Alt. 296.0 ft. Driller's log. Wet, brown sand, silt and H9-20-7B. Alt. 256.3 ft. Driller's log. 180. Alt. 309.3 ft. Driller's log. gravel; water at 0.5 ft. 6.0 6.0 Sand, gravel, and boulders.... 4.5 4.5 Fine brown sand some silt, boulda's 3.0 3.0 Refusal. at 6.0 Boulder. 1.0 5-5 Very compact brown sand. Medium yellow sand, gravel and gravel and boulders. 6.0 9.0 102. Alt. 329.6 ft. Driller's log. boulders... 3-5 9.0 Bedrock. 8.0 17.0 Fine and coarse sand, some Boulder. 1-5 10.5 gravel.•. 3.0 3.0 Medium yellow sand. 1.0 11.5 207. Alt. 241.3 ft. Driller's log. Compact brown sand, gravel, Rock, fractured granite. Iteat, muck; waterl.O ft above lsd. 4.0 4.0 boulders.... 5.0 8.0 gneiss, and Harvard schist... 5.0 16.5 Loose brown sand, some gravel.. 5.0 9.0 Refusal.. at 8.0 Fine, coarse brown sand, sane gravel 9.0 18.0 No water encountered. Refusal. at 18.0 3^ Table 5-—Logs of selected borings in the Assabet River basin, Massachusetts—Continued Thick- ness Depth Thick- NORTHBORQUGH 1S20-4-4. Alt. 277.5 ft. Driller's log. Lpam. 1.0 1.0 U.S. Geological Survey Auger Borings Sand and gravel... 5-0 6.0 Wood; water at J .6 ft. 7-0 13.0 al. Alt. about 305 ft. Geologist's log. Fine sand. 19.0 32.0 Sand, loosely compacted, medium Sand and clay. 10.0 42.0 to very coarse, brown, dry. Clay and sand. 12.0 54.0 moderately sorted, subrounded Sand and gravel. 11.0 65 .O quartz-rich, and fine gravel. 10 10 Sand, gravel, and clay. 13-0 78.0 Sand, fine, moist; some medium Refusal. at 78.0 sand to very fine gravel; water at 8.3 ft. 7 17 N20-17-1. Alt. 280.0 ft. Driller' s log. Silt and fine sand; gravel Loose coarse dirty sand and lense at 2k ft. 14 31 gravel fill; water at at. 7.25 ft. 15.7 15.7 Soft fine blue sand. 4.1 19.8 a2. Alt. about 320 ft. Geologist's log. Stiff coarse blue sand and Sand, compact, very fine to gravel. 12.2 32.0 15 very coarse, brown, dry, poorly sorted, subangular to subrounded, and fine gravel.. 8 Refusal. at a3 - Alt. about 325 ft. Geologist's log. Fill. 5 Sand, medium, to very coarse, brown, moist, poorly sorted, and gravel. 10 Till: predominantly sand, some silt and some gravel; water at 15 ft. 11 26 Refusal..... at 26 a4 . Alt. about 305 ft. Geologist's log. Sand, loosely compacted, fine to medium, light brown, dry, moderately sorted, subangular to subrounded; some fine sand and fine gravel. 10 10 Sand, loosely compacted, medium Metropolitan District Commission Tunnel Borings Wachusett-Marlborough Tunnel, Contract 283 11. Alt. 275 ft. Driller's log. Brown medium to fine sand, medium density. 13.0 13.0 Brown medium to fine sand, dense. 4.5 17*5 Brown medium to fine sand, some medium to fine gravel; dense. 4.5 22 Medium to fine sand and gravel and rock fragments. 7-5 29.5 Medium to coarse sand and gravel, staggered boulders, very dense. 12.5 Bedrock. 31-9 12. Alt. 255.0 ft. Driller's log. Gray medium to fine sand. 42.0 73-9 to coarse, well sorted; minor medium density, wet. 6.5 6.5 fine to coarse gravel; Gray fine sand. 3.0 9-5 sorting coefficient increases Brown fine sand, medium with depth; water at 32 ft... 45 55 density, wet.. 3.0 12.5 Sand, fine to medium, well Gray medium to fine sand and sorted; some gravel. 15 70 gravel, staggered boulders, Sand, fine to very fine, gray- very dense; moist. 12.5 25 green, well sorted. 5 T 5 Bedrock. 20.4 45.4 Till: silt and very fine sand with seme gravel. 12 Refusal. a5. Alt. about 305 ft. Geologist's log. Fill. 5 Sand, loosely compacted, fine to very coarse, poorly sorted, fine gravel. 5 Sand, medium to coarse, well sorted. 5 Sand, loosely packed, fine to coarse, iron-red, poorly sorted; coarser with depth with intermittent gravel lenses; water at 25 ft. 14 Till: predominantly medium sand, with some silt and coarse sand. 2 a6. Alt. about 305 ft. Geologist's log. Gravel, compact, brown. 2 Sand, loose, medium, dry, well sorted, subangular; some coarse sand and fine gravel; wet at 15 ft. Sand, fine to medium. Sand, very fine to fine. Till: clay, silt, sand and some gravel. Refusal. 87 at 87 10 15 29 31 33 10 10 35 45 53 63 at 63 Mass. Dept, Public Works Bridge Borings H20-1-4A . Alt 251.7 ft. Driller's log. Fill, sand, gravel, trace of brick, dry, loose brown. Fine sand and gravel, wet, brown. Fine sand, trace of gravel loose brown. Fine sand, some gravel and stones, wet, very ha Refusal. Shaft B . Alt. 299.8 ft. Driller's log. Black loam, staggered boulders brown fine sand, some rock fragments. 4 4 Very dense gray coarse to fine sand and rock fragments, staggered boulders, very dense, moist. 20 24 Bedrock... 276.2 300.2 12. Alt. 241.0 ft. Driller's log. Organic peat. 2.0 2.0 Brown and gray fine sand, medium density, moist. 12.3 14.3 Boulder. 6.6 20.9 Fine to medium sand. 2.1 23 Bedrock. 43.7 66.7 14. Alt. 225.0 ft. Driller's log. Black silty fine sand. 2.5 2.5 Brown fine sand, little gravel dense, moist... 5-5 8 Gray medium to fine sand, little gravel. 7 15 Brown silty fine sand, little gray fine sand. 7 22 Brown medium to fine sand and some gravel, very dense. 5-5 27-5 Gray medium to fine sand, little gravel and silt. 3-5 31 Bedrock. 38 69 15. Alt. 228.0 ft. Driller's log. Coarse sand and gravel. 4 4 Medium sand and gravel. 4.5 8.5 Silt and coarse sand, non plastic. 5 13-5 5.0 5.0 Silt and fine sand, trace of firm coarse sand. 4 i .6 55-1 5.0 10.0 Boulders, some gravel, little ., wet space between. 18.3 73.4 4.0 i 4 .o 27.4 100.8 gray. 6.0 20.0 at 20.0 Thick- ness Depth 15A . Alt. 243.0 ft. Driller 1 s log. Gray silt and clay. 8.0 8.0 Brown silt and sand. 5.5 13-5 Gray silt. 3.5 17.0 Silt and fine sand... 30.0 47.0 Fine sand and silt. 28.0 75-0 Sand, silt, and gravel. 9-8 84.8 Bedrock. 30.8 U 5.6 15B. Alt. 262.0 ft. Driller's log. Fine brown sand and gravel_ 8.5 8.5 Coarse sand. 6.5 15 Gray fine sand and silt. 57 .5 72.5 Gravel, some silt. 7.5 80 Bedrock. 28.5 IO 5.8 16. Alt. 286.0 ft. Driller's log. Sand and gravel. 15 15 Heavy gravel and cobbles. 31 46 Silt, sand, gravel, till. 51.2 97.2 Bedrock. 26.1 123.3 1J. Alt. 240.0 ft. Driller's log. Fine sand, trace of gravel, some silt. 13-0 13.0 Fine brown sand, very dense... 9-0 22.0 Fine sand and silt... 17.0 39-0 Fine sand and silt, trace of gravel. 22.8 6 l .8 Bedrock. 23.2 85 .0 18. Alt. 228 ft. Briller's log. Peat. 1.8 1.8 Brown medium to fine sand and medium to coarse gravel, staggered boulders. 15-2 17 Gray brown medium to fine sand and gravel, staggered boulders. 7 24 Bedrock. 30 54 19. Alt. 223.0 ft. Driller's log. Brown fine sand and silt, trace of fine gravel. 6 6 Brown fine sand and silt. 35 4l Medium to fine sand, brown, trace of fine gravel, boulders. 15 58 Bedrock. 30 86 20. Alt. 225.0 ft. Driller's log. Brown coarse to fine sand, trace of fine gravel. 6 6 Continuous boulders, decayed rock.-. 18.4 24.4 Bedrock. 30.54.4 21. Alt. 253.0 ft. Driller's log. Medium to fine sand, trace of silt. 17 17 Coarse to fine sand, trace of silt, dense. 11 28 Coarse to fine sand, trace of fine gravel, trace of silt.. 3-8 31.8 Bedrock. 70.4 102.2 22. Alt. 239 ft. Driller's log. Brown fine sand, some decayed vegetation. 3-5 3-5 Brown fine sand, loose. 3-5 7 Gray fine sand. 4 11 Gray fine sand, some silt, very dense. 4 15 Gray fine sand, some silt and medium to fine gravel. 2 17 Gray medium to fine sand and fine to coarse gravel. 7 24 Bedrock. 215 239 23. Alt. 243.0 ft. Driller's log. Swamp peat and loam... 2 2 Gray clay and silt, trace of brown sand, trace of brown organic hilt. 5 7 Gray fine sand, trace of inorganic silt. 6 13 Gray medium sand, trace of fine gravel, gradual change, gray medium sand. 9 22 Boulders. 6.5 28.5 Bedrock. 30.0 58.5 35 Table 5*—Logs of selected borings in the Assabet River basin, Massachusetts—Continued Thick- Thick- Thick- ness Depth ness Depth ness Depth WESTBOROUGH Mass. Dept. Public Works Bridge Borings W24-17-1. Alt. 285.4 ft. Driller s log. Coarse sand and boulders. 6.5 6.5 U.S. Geological Survey Auger Borings W24-2-2. Alt. 271.47 ft. Driller' s log. River mud and fine sand. 2.0 8.5 Mud. 5.5 5-5 Coarse yellow sand and gravel. 5-5 14.0 al. Alt. about 290 ft. Geologist's log. Loose fine blue sand. 6.1 11.6 Sand, loosely packed, medium, Loose coarse sand and gravel.. 2.4 14.0 W24-18-2. Alt. 334.3 ft. Driller s log. brown, well sorted; some Sharp fine blue sand. 6.2 20.2 Sand, gravel, and boulders.... 7.5 7-5 coarse sand; gravel from 9 to Firm fine gray sand and little Coarse sand and gravel. 5.0 12.5 14 ft. and 36 to 38 ft.; clay. 11.8 32.0 Compact sand, gravel, and water at 10 ft. 55 55 Hard coarse sand and coarse boulders. 7.0 19.5 Till: clay, silt, fine sand and gravel. 4.0 36.0 Refusal. at 19.5 some gravel. 12 67 W24-7-6. Alt. 327.3 ft. Driller's log. Fill, dirty brown sand. Fill, fine brown sand, some 4.0 4.0 gravel. Fill, gray-brown sand, some 6.0 10.0 gravel... Fine gray-brown sand, some 10.0 20.0 silt; water at 21.0 ft. Fine gray sand, some fine 3.0 23.0 gravel, trace of silt....... 7-0 30.0 36 Table 6.—Chemical analyses of water from selected wells and one pond in the Assabet River basin, Massachusetts (Analytical results in parts per million except as indicated) uopoo Hd (0 o £S d'B soqmouoxm) aou'eq.onpuoo oxjxoaag aq.Buoq -UUOUOfJ maxseuSum 'umxopBO D 0 ORI I'B uoxq.uu iduAS uo anpxsay;) spxpos pSAXOSSXQ (£S) sq-Bjing (^OOH) sq.'Buoquuoxa (j{) nmxssuqoj CD co CQ O (D o £ ctf & o u cti CQ M Ctf (•Bfj) muxpog (9^) umxssuSBW (•eg) nmxoiBO (uw) aseuBSuBm pBqoj, (^d) UOUX IBqOJj ( 5 0TS) Boxpxg (d„) sunqBuedmaj: - 1 — H a OJ CQ i-3 Cs VO ft ft a LTV • • g 1 1 • | 0 m CVJ OJ on 1—1 00 •OO • • 1 1 0 tv- 1 ft OJ ft ft 1 —1 ft 0 ft 0 0 1—1 ft 0 0 0 0 on 1—1 d 1 1 ft tv- on q Ov 1—1 0 0 CO 1—1 0 1—1 tft d on on CVJ 00 CO ft 1—1 tft 1 ft ft 0 1—1 ft OJ LTV LTV LTV LTV OJ d 1 1 O ft 1 ft ft ft Lf\ LTV on 00 m OJ on on vo ■ vo 1 vo vo vo vo 1 ft 1 ft 1 ft 1 LTV , 1 ft 1 1—1 1—1 • ft OJ 1—1 1 ft 1 ft 1 ft 1 tv- ft 1 ft -4 A -P • H >. cd a; o 2 o CD -H r—I ft ft cd p o ft •H bO • a -p o 0 a . 0 CD c/3 • cd ft S >> >> ft ft 0 0 O h 3 o P< CQ 0 n ph 0 ft -p o -p -p Ch > pH pH ft rH H 0 0 cd cd cd -p -P d q a cd cd \\\\\ H I C\J | I LT\| 38 Table J .— Water levels in observation wells in the Assabet River basin, Massachusetts (Depths in feet below land-surface datum except when preceded by a + indicating they are above land-surface datum. For description of wells, see table 2.) Date Water level Date Water level Date Water level Date Water level Date Water level Date Water level BOLTON 26 CONCORD 87 —Continued (Daily high water levels ; from recorder gra ph) 1962 1963 1963 1962 1962 1962 June 27 5.6 Mar. 26 2.97 Dec. 26 5.21 Mar. 1 10.22 May 8 8.60 July 15 10.88 Aug. 28 7.6 Apr. 26 4.92 1964 2 10.26 9 8.60 16 10.92 Oct. 1 5.6 May 27 5.63 Feb. “^3 4.27 3 10.27 10 8.64 17 IO .96 22 5.04 July 2 6.87 Mar. 6 3.20 4 10.30 11 8.68 18 11.00 Nov. 23 3.82 Aug. 2 7.32 Apr. 3 2.48 5 10.35 12 8.71 19 11.03 Dec. 22 5.41 27 8.85 May 1 4.95 6 10.34 13 8.74 20 11.07 1963 Oct. 8 9.78 June 2 6.15 7 10.35 l4 8.76 21 11.11 Jan. 22 4.59 31 10.44 July 6 7.26 8 10.41 15 8.79 22 11.14 Feb. 26 5.10 Dec. 6 4.30 9 10.43 16 8.83 23 11.17 10 10.42 17 8.86 24 11.20 B0XB0R0UGH 10 11 10.36 18 8.89 25 11.24 12 10.21 19 8.92 26 11.28 1962 1963 1963 13 9-93 20 8.95 27 11.31 June l4 13.35 Apr. 26 11.38 Dec. 26 11.66 l4 9.72 21 8.98 28 11.35 Aug. 28 16.85 May 27 12.17 1964 15 9.43 22 9.06 29 11.39 Oct. 1 15.35 July 2 14.70 Feb .“(3 11.12 16 9-20 23 9.10 30 11.43 28 11.34 Aug. 2 15.86 Mar. 6 10.87 17 9.11 24 9.13 31 11.46 1963 27 16.60 Apr. 3 9.56 18 9.10 25 9.16 Aug. 1 11.49 Jan. 22 11.99 Oct. 8 16.70 May 1 11.45 19 9.11 26 9.21 2 11.54 Feb. 26 12.50 31 16.64 June 2 13.34 20 9.10 27 9.26 3 11.58 Mar. 26 10.08 Dec. 6 11.10 July 6 15.39 21 9.09 28 9-31 4 11.63 22 9.08 29 9-35 5 11.67 CARLISLE 4l 23 9.08 30 9-39 6 11.72 24 9.06 31 9.38 7 11.77 1963 1963 1963 25 9.04 June 1 9.32 8 11.81 Jan. 22 3.32 July 2 8.68 Dec. 6 4.73 26 9.02 2 9.38 9 11.86 Feb. 27 4.2 Aug. 2 9.92 26 4.96 27 8.99 3 9.47 10 11.91 Mar. 26 .29 27 10.47 1964 28 8.97 4 9.51 11 11-95 Apr. 26 3.06 Oct. 8 9.92 Feb. 6 3.81 29 8.93 5 9.54 12 11.99 May 27 4.34 31 10.17 Mar. 6 l.l4 30 8.90 6 9.56 13 12.03 31 8.87 7 9-59 l4 12.07 CONCORD 87 Apr. 1 8.66 8. 9.62 15 12.11 (Daily high water levels ; from recorder graph) 2 8.47 9 9.65 16 12.16 1961 1961 1962 3 8.30 10 9.67 17 12.20 Sept. 19 13.12 Oct. 23 12.08 Jan. 26 9.42 4 8.19 11 9.69 18 12.24 20 13.14 24 12.08 27 9-31 5 8.11 12 9.71 19 12.29 21 12.75 25 12.07 28 9.32 6 8.05 13 9-74 20 12.33 22 12.73 26 12.07 29 9-32 7 8.01 14 9-76 21 12.37 23 12.72 27 12.08 30 9.28 8 8.00 15 9-79 22 12.42 24 12.71 28 12.09 31 9.31 9 8.00 16 9.81 23 12.47 25 12.67 29 12.09 Feb. 1 9-31 10 8.02 17 9.84 24 12.51 26 12.59 30 12.08 2 9-37 11 8.06 18 9.88 25 12.55 27 12.56 31 12.08 3 9.36 12 8.10 19 9.91 26 12.59 28 12.52 Nov. 1 12.09 4 9-37 13 8.06 20 9-93 27 12.63 29 12.49 2 12.14 5 9.31 l4 8.09 21 9-97 28 12.68 30 12.47 3 12.17 6 9.31 15 8.18 22 10.01 29 12.71 Oct. 1 12.45 4 12.18 7 9.43 16 8.21 23 10.03 30 12.75 2 12.43 5 12.20 8 9.50 17 8.25 24 10.07 31 12.79 3 12.41 6 12.22 9 9-53 18 8.24 25 10.10 Sept. 1 12.82 k 12.40 7 12.24 10 9-55 19 8.25 26 10.14 2 12.86 5 12.37 8 12.25 11 9.63 20 8.29 ?7 10.19 3 12.90 6 19.34 9 12.26 12 9.66 21 8.31 28 10.23 4 12.94 7 12.32 10 12.29 13 9.69 22 8.31 29 10.26 5 12.97 8 12.28 11 12.33 l4 9.73 23 8.32 30 10.30 6 13.00 9 12.26 12 12.35 15 9.76 24 8.39 July 1 10.34 7 13.04 10 12.24 13 12.37 16 9.81 25 8.40 2 10.39 8 13.07 11 12.22 l4 12.38 17 9.83 26 8.48 3 10.43 9 13.10 12 12.20 15 12.40 18 9.88 27 8.50 4 10.47 10 13.14 13 12.18 16 12.42 19 9.93 28 8.54 5 10.51 11 13.17 l^ 12.17 17 12.43 20 9.94 29 8.58 6 10.55 12 13.21 15 12.16 18 12.45 21 9.98 30 8.62 7 10.59 13 13.25 16 12.14 19 12.48 22 10.03 May 1 8.65 8 10.64 l4 13.29 17 12.13 20 12.51 23 10.06 2 8.68 9 10.67 15 13.32 18 12.12 1962 24 10.10 3 8.67 10 IO .70 16 13.36 19 12.10 Jan. 22 9-55 25 10.15 4 8.64 11 10.73 17 13-40 20 12.09 23 9.48 26 10.19 5 8.60 12 10.77 18 13.43 21 12.09 24 9.44 27 10.21 6 8.56 13 10.80 19 13.45 22 12.09 25 9.44 28 10.23 7 8.57 l4 10.84 20 13-48 39 Table 7-— Water levels in observation wells in the Assabet River basin, Massachusetts—Continued. Date Water level Date Water level Date Water level Date Water level Date Water level Date Water level CONCORD 87—Continued (Daily high water levels from recorder graph) (Daily high CONCORD 87 —Continued water levels from recorder graph) 1962 1962 1963 1963 1963 1963 Sept. 21 13.52 Dec. 1 8.86 Feb. 9 10.32 Apr. 22 9.36 June 26 11.11 Aug. 21 13.35 22 13.56 2 8.89 10 10.36 23 9.40 27 11.15 22 13.^0 23 13.59 3 8.92 11 10.39 24 9.4o 28 11.19 23 13.44 24 13.62 4 8.95 12 10.41 25 9.47 29 11.21 24 13.48 25 13.65 5 8.97 13 10.42 26 9-50 30 11.24 25 13.52 26 13.67 6 8.83 14 10.47 27 9.52 July 1 11.28 26 13.57 27 13.71 7 8.78 15 10.49 28 9-55 2 11.31 27 13.61 28 13.62 8 8.71 16 10.54 29 9.58 3 11.34 28 13.65 29 13.60 9 8.62 17 10.59 30 9.58 4 11.37 29 13.69 30 13.60 10 8.58 18 10.62 May 1 9.58 5 ll.4l 30 13.72 Oct. 1 13.59 n 8.54 19 10.63 2 9.63 6 11.46 31 13.75 2 13-59 12 8.50 20 10.63 3 9.66 7 11.50 Sept. 1 13-79 3 13-59 13 8.47 21 IO .65 4 9.68 8 11.54 2 13.83 4 13.59 l4 8.46 22 10.72 5 9.70 9 11.58 3 13.86 5 13.60 15 8.48 23 10.75 6 9-73 10 11.63 4 13.89 6 12.21 16 8.48 24 10.79 7 9.75 11 11.67 6 14.01 7 11.29 17 8.50 26 10.88 8 9.76 12 11.72 7 14.03 8 IO .58 18 8.56 27 10.89 9 9.78 13 11.77 8 l4.o6 9 10.11 19 8.62 28 10.93 10 9.81 l4 11.81 9 14.09 10 9.80 20 8.66 Mar. 1 10.97 11 9.83 15 11.85 10 l4.12 11 9-59 21 8.79 2 10.98 12 9.87 16 11.90 11 14.15 12 9-^3 22 8.73 3 11.03 13 9.89 17 11.94 12 14 .18 13 9.32 23 8.84 4 11.07 l4 9.90 18 11-97 13 14.21 l4 9.24 24 8.91 5 11.09 15 9.92 19 12.00 l4 14.24 15 9.17 25 8.97 6 11.07 16 9-95. 20 12.04 15 14.27 16 9.11 26 8.97 7 11.04 17 9-97 21 12.07 16 14.30 17 9.08 27 9.05 8 11.01 18 9-99 22 12.12 17 14.32 18 9.07 28 9.07 9 11.01 19 10.00 23 12.15 18 14.35 19 9.05 29 9.12 10 10.98 20 10.03 24 12.19 19 14.37 20 9.03 30 9.13 11 11.01 21 10.05 25 12.23 20 l4.4o 21 9.02 31 9.16 12 10.99 22 10.06 26 12.27 21 14.43 22 9.06 1963 13 11.01 23 10.08 27 12.31 22 14.45 23 9.06 Jan. 1 9.22 l4 10.96 24 10.11 28 12.34 23 14.48 24 9.08 2 9.27 15 10.83 25 10.13 29 12.38 24 14.51 25 9.15 3 9-32 16 10.68 26 10.15 30 12.43 25 14.53 26 9.15 4 9.36 17 10.45 27 10.17 31 12.47 26 14.55 27 9.19 5 9.40 18 10.30 28 10.18 Aug. 1 12.51 27 14.57 28 9.25 6 9.44 19 10.15 29 10.20 2 12.53 28 l4.6o 29 9.26 7 9.48 20 10.14 June 7 10.49 3 12.56 29 14.62 30 9.32 8 9.52 21 10.19 8 10.51 4 12.60 Oct. 3 14.59 31 9-33 9 9-55 22 10.11 9 10.53 5 12.64 4 14.63 Nov. 1 9-35 10 9.60 23 10.09 10 10.57 6 12.69 5 l4.66 2 9.4o 11 9-5^ 24 9.91 11 10.60 7 12.73 6 14.68 3 9.34 12 9.45 25 9.68 12 10.63 8 12.77 7 14.70 4 9.34 13 9.52 26 9-57 13 10.66 9 12.82 8 14.71 5 9-33 l4 9.64 27 9-53 l4 10.70 10 12.86 Nov. 2 14.98 6 9.32 15 9.71 28 9.48 15 10.73 11 12.92 3 15 .OO 7 9.28 16 9-75 29 9.43 16 10.76 12 12.96 4 15.02 8 9.27 17 9.78 30 9.39 17 10.80 13 13.00 5 15.03 9 9.26 18 9.82 31 9.38 18 10.84 l4 13.04 6 15-04 10 9.12 19 9.86 Apr. 1 9-35 19 10.88 15 13.09 7 14.82 11 9.12 20 9.67 2 9-33 20 10.91 16 13.13 8 14.20 12 9.08 21 9.66 3 9-30 21 10.92 17 13.18 9 13.80 13 9.03 22 9.68 4 9.27 22 10.96 18 13.22 10 13.53 14 8.99 23 9-77 5 9.26 23 11.00 19 13.27 11 13.36 15 8.96 24 9-77 6 9.23 24 11.05 20 13.31 12 13.22 16 8.94 25 9-79 7 9.21 25 11.08 17 8.93 26 9.90 8 9.19 18 8 -. 92 27 9.87 9 9-17 HARVARD 55 19 8.93 28 9-9^ 10 9.17 20 8.93 29 10.01 11 9.16 1962 1963 1963 21 8.92 30 10.03 12 9.17 July 13 8.10 Mar. 26 6.09 Dec. 26 7-55 22 8.90 31 10.05 13 9.17 Aug. 28 8.5 Apr. 26 7.25 1964 23 8.95 Feb. 1 10.10 14 9-18 Oct. 1 7-9 May 27 7-59 Feb. 6 7.07 24 8.94 2 10.13 15 9-20 22 7-2 July 2 8.08 Mar. 6 6.66 25 8.92 3 10.14 16 9.23 Nov. 23 7.05 Aug. 2 8.64 Apr. 3 6.32 26 8.90 4 10.21 17 9-26 Dec. 22 7-35 27 8.70 May 1 7.16 27 8.88 5 10.22 18 9.25 1963 Oct. 8 8.39 June 2 7.38 28 8.87 6 10.23 19 9-30 Jan. 22 7.23 31 8.32 July 6 8.39 29 8.86 7 10.25 20 9.29 Feb. 26 7.68 Dec. 6 7.32 3Q. - 8.86 8 10.28 21 .9-35 kO Table 7-—Water levels in observation wells in the Assabet River basin, Massachusetts—Continued Date Water level Date Water level Date Water level Date Water level Date Water level Date Water level HARVARD 59 MAYNARD 4l—Continued (Daily high water levels from recorder graph) 1962 1963 1963 1962 1962 1962 Aug. 28 33-3 Apr. 26 27.65 Dec. 26 28.80 Mar. 25 0.02 June 4 0.03 Aug. 14 0.37 Oct. 1 32.8 May 27 29.80 1964 26 .02 5 .02 15 .42 22 27.29 July 2 31-75 Feb.~^ 26.22 27 .02 6 .00 16 • 49 Nov. 23 26.67 Aug. 2 32.81 Mar. 6 26.57 28 .02 7 .01 17 .31 Dec i 22 26.93 27 34.24 Apr. 3 24.81 29 .02 8 • 03 18 .04 1963 Oct. 8 34.4l May 1 26.61 30 .03 9 • 03 19 .08 Jan. 22 29.72 31 34.57 June 2 30.18 31 .03 10 .04 20 .27 Feb. 26 30.24 Dec. 6 29.61 July 6 32.42 Apr. 1 + .16 11 .05 21 .29 Mar. 26 25.20 2 + .01 12 .03 22 • 29 3 .02 13 .03 23 .27 HUDSON 91 4 .02 l4 .03 24 • 34 5 .03 15 .04 25 .39 1961 I 963 - 1963 6 .03 16 .05 26 .44 Nov. 22 5.15 Jan, 22 3.89 Oct. 31 9.10 7 • 03 17 .08 27 .49 1962 Mar. 26 2.04 Dec. 6 5.17 8 .03 18 .14 28 .44 Oct. 22 4.08 Apr. 26 4.21 26 5.66 9 • 03 19 .15 29 .03 Nov. 23 3.32 May 26 4.98 1964 10 .03 20 .16 30 .03 Dec. 22 4.07 Aug. 27 6.64 Feb. 6 4.52 11 .03 21 .16 31 .05 Oct. 8 8.29 Mar. 6 3.98 12 .03 22 .14 Sept. 1 • 19 13 .02 23 .21 2 • 27 MAYNARD 4l l4 .03 24 .11 3 • 31 (Daily high water levels from recorder graph) 15 .03 25 .05 4 • 35 1961 1961 1962 .04 16 .02 26 .12 5 .38 Sept • 19 • 57 Dec. 20 .04 Feb. 5 17 .03 27 .06 6 .33 20 • 53 21 .04 6 .04 18 .03 28 .13 7 • 38 21 + .13 22 .04 7 .04 19 .03 29 .22 8 .43 22 + .03 23 .05 8 .05 20 .03 30 .26 9 .48 23 .02 24 .08 9 .07 21 .03 July 1 .30 10 • 52 24 • 03 25 .09 10 .06 22 .03 2 • 33 11 • 57 25 .01 26 .09 11 .05 23 .03 3 • 35 12 . 66 26 + .01 27 .06 12 .05 24 .04 4 • 38 13 .70 27 .02 28 .03 13 • 05 25 .04 5 .41 14 .74 28 .03 29 .03 14 .06 26 .04 6 .42 15 .67 29 .04 30 .04 15 .06 27 .04 7 .44 16 .77 30 .09 31 .04 16 .05 28 .04 8 .47 17 .77 Oct. 1 .14 1962 17 .05 29 .03 9 .23 18 .04 2 .20 Jan. 1 .05 18 .05 30 .02 10 • 15 19 .07 3 .15 2 .05 19 .05 May 1 .02 11 .28 20 .24 19 .13 3 .05 20 .05 2 .02 12 .37 21 .33 20 .16 4 .05 21 .05 3 .00 13 .38 22 .4o 21 .17 5 .07 22 .05 4 .01 l4 .42 23 .44 22 .17 6 + .01 23 .05 5 .02 15 .43 24 .44 23 .17 7 + .01 24 .05 6 .03 16 .38 25 .47 2b .19 8 .01 25 .05 7 .03 17 • 35 26 .37 25 .22 9 .02 26 .04 8 .03 18 .35 27 + .02 26 • 23 10 .03 27 .04 9 .03 19 • 34 28 +. 05 27 • 23 11 .03 28 .04 10 .04 20 .44 29 .02 28 .24 12 .04 Mar. 1 .04 11 .04 21 .^9 30 .03 29 .24 13 .04 2 .04 12 .04 22 .44 Oct. 1 .04 30 .24 i4 .05 3 .04 13 .04 23 .33 2 .05 31 .24 15 + .01 4 .04 l4 .04 24 .20 3 . 10 Nov. 1 • 25 16 + .01 5 .04 15 .04 25 .20 4 . l6 2 .26 17 .02 6 .04 16 .04 26 .32 5 + . 11 3 .26 18 .03 7 .04 17 .04 27 .30 6 + •35 4 .26 19 .04 8 .04 18 .04 28 • 35 7 + .35 5 • 25 20 .04 9 .04 19 .02 29 .43 8 + .27 6 • 17 21 .05 10 .04 20 .03 30 .47 23 • 05 7 .03 22 .04 11 .04 21 .03 31 • 51 24 • 05 8 .04 23 .04 12 .03 22 • 04 Aug. 1 .46 25 •05 9 .04 24 .04 13 .02 23 .04 2 .51 26 .04 10 .05 25 .04 14 .02 24 .03 3 .59 27 .04 11 .07 26 .03 15 .02 25 .03 4 .65 28 .04 12 .10 27 .03 16 .02 26 .04 5 .71 29 .04 13 .11 28 .03 17 .02 27 .04 6 .74 30 .04 lb .05 29 .04 18 .02 28 .05 7 .77 31 .03 15 .05 30 .05 19 .02 29 .05 8 .52 Nov. 1 .02 16 .05 31 .05 20 .02 30 .07 9 .37 2 • 03 17 .04 Feb. 1 .05 21 .02 31 + .05 10 .30 3 .02 18 .05 2 .07 22 .02 June 1 + .03 11 .23 4 .02 19 .05 3 .10 23 .02 2 .01 12 .23 5 • 03 20 -Q7 4 .06 24 .02 3 .03 13 .33 6 • 03 4l Table 7.—Water levels in observation wells in the Assabet River basin, Massachusetts—Continued. Date Water level Date Water level Date Water level MAYNARD 4l—Continued (Daily high water levels from recorder graph) 1962 1963 1963 Nov. 7 0.04 Feb. 5 0.05 May 23 0.04 8 .04 6 .05 24 .04 9 .04 7 .05 25 .05 10 .00 8 .05 26 .07 11 .01 9 .05 27 .09 12 .02 10 .05 28 .11 13 • 03 11 .05 29 .12 l4 • 03 12 .05 30 .07 15 • 03 13 .05 31 .08 16 • 03 14 .05 June 1 .12 17 • 03 15 • 05 2 • 17 18 •03 16 • 05 3 .21 19 .03 17 .05 7 .07 20 .03 18 .06 8 .07 21 .03 19 .06 9 .17 22 .00 20 .06 10 .18 23 .01 21 .05 11 .16 24 .02 22 •05 12 .14 25 • 03 27 .04 13 .14 26 • 03 28 .05 14 .20 27 • 03 Mar. 1 .05 15 • 15 28 • 03 2 .05 16 .14 29 .03 3 .04 17 .18 30 .04 4 .04 18 .25 Dec. 21 .05 5 .04 19 • 32 22 • 05 6 +.21 20 • 34 23 • 05 7 .02 21 .29 24 .05 8 .03 22 .35 25 .05 9 .02 23 • 35 26 .05 10 .03 24 • 38 27 .05 11 .03 25 .42 28 .05 12 .02 26 .46 29 •05 13 .01 27 • 51 30 .05 l4 .01 28 • 57 31 .05 15 .02 29 .44 1963 16 .02 30 .25 Jan. 1 • 05 17 .02 July 1 .24 2 .06 18 .01 2 .25 3 .06 19 .01 3 .25 4 .06 20 .02 4 .31 5 . 06 21 .02 5 .34 6 .06 22 .01 6 • 32 7 .06 23 .02 7 • 31 8 .06 24 .01 8 .25 9 .06 25 + .02 13 .38 10 .06 26 + .06 l4 .38 11 .04 27 .00 15 • 38 12 .04 28 .03 16 .38 13 .05 29 .03 17 .38 l4 .05 May 1 .03 18 .38 15 .05 2 .03 19 .38 16 .05 3 .03 20 • 37 17 .05 4 .03 21 .37 18 .06 5 .03 22 • 37 19 .06 6 .03 23 • 37 20 .04 7 .04 24 • 37 21 .04 8 .04 25 .43 22 .05 9 .04 26 .45 23 .04 10 .04 27 .53 24 .04 11 .04 28 .61 25 .05 12 .04 29 .66 26 .05 13 .04 30 .87 27 .05 l4 .04 31 .87 28 .05 15 .04 Aug. 1 .92 29 .05 16 .04 2 • 94 30 .05 17 .04 3 .94 31 .05 18 .04 4 • 94 Feb. 1 .05 19 .04 5 .94 2 .05 20 .04 6 • 94 3 .05 21 .04 7 .94 4 .05 22 .04 8 • 94 Water Water Water Date level Date level Date level MAYNARD 4l— •Continued (Daily high water levels from recorder graph) 1963 1963 1963 Aug. 9 0.94 Nov. 9 0.11 Nov. 21 0.12 10 .94 10 .11 22 .12 11 • 94 11 .11 23 .11 12 .94 12 .11 24 .11 13 .94 13 .11 25 .11 Nov. 1 .22 l4 .11 26 .11 2 .22 15 .11 27 .11 3 .22 16 .11 28 .11 4 .22 17 .11 29 .11 5 .22 18 .11 30 .08 6 .24 19 .11 Dec. 1 .12 7 • 15 20 .11 2 ■ 13 8 .15 NORTHBOROUGH 38 1962 1963 1963 Aug. 20 9-8 Mar. 26 3.34 Dec. z 6.12 28 10.2 Apr. 26 4.81 1964 Oct. 1 10.7 May 27 5-21 Feb. 6 4.78 22 5.65 July 2 6.74 Mar. 6 3-9^ Nov. 23 4.66 Aug. 2 9-55 Apr. 3 3-21 Dec. 22 4.97 27 12.05 May 1 4.86 1?63 Oct. 8 13.27 June 2 6.10 Jan. 22 4.73 31 12.95 July 6 8.66 Feb. 26 4.96 NORTHBOROUGH 47 1962 1963 1963 Aug. 23 15.6 Mar. 26 14.00 Dec. 5 13.69 Oct. 1 16.3 Apr. 26 13.25 26 13-20 22 13.17 May 27 13.5^ 1964 Nov. 23 12.97 July 2 14.19 Feb. 6 13.08 Dec. 22 12.96 Aug. 2 14.92 Mar. 6 13.27 1963 27 15.52 Apr. 3 12.03 Jan. 22 13.52 Oct. 8 16.19 May 1 12.87 Feb. 26 14.22 31 16.35 June 2 13.57 NORTHBOROUGH 50 1962 1963 1964 Aug. 23 dry May 27 5-57 Feb. 1.87 Oct. 1 15.0 July 2 10.24 Mar. 6 1-75 22 5.82 Aug. 2 13-41 Apr. 3 l.ll Dec. 22 3-22 27 15.24 May 1 2.94 1963 Oct. 8 dry June 2 6.60 Jan. 22 4.33 31 dry July 6 11.11 Mar. 26 1.23 Dec. 6 6.48 Apr. 26 3.03 26 5-11 NORTHBOROUGH 54 1962 I963~ 1964 Aug. 24 15.0 Mar. 26 5.66 Feb. 8.26 'Oct. 1 l4.8 Apr. 26 10.66 Mar. 6 7.12 22 9.30 May 27 11.59 Apr. 3 5.98 Nov. 23 8.67 Aug. 27 15.06 May 1 9.17 Dec. 22 9.48 Oct. 8 16.00 June 2 12.19 1963 Jan. 22 Feb. 26 10.05 IO .70 Dec. 31 6 26 15.97 7.82 9.81 July 6 13.68 b2 Table 7*—Water levels in observation wells in the Assabet River basin, Massachusetts—Continued Date Water level Date Water level Date Water level Date Water level Date Water level Date Water level N0RTHB0R0UGH 55 WESTFORD 7 1962 1963 1963 - 1953" 1963 1963 Aug. 24 14.86 Apr. 26 9-32 Dec. 26 10.61 Jan. 22 14.46 July 2 dry Dec. 5 15.63 Oct. 1 15.36 May 27 10.62 1964 Feb. 27 14-93 Aug. 2 dry 26 i 5 .ll 22 11.04 July 2 12.70 Feb. 6 8.70 Mar. 26 14.28 27 dry 1964 Nov. 23 9M Aug. 2 14 .16 Mar. 6 9.81 Apr. 26 14.34 Oct. 8 dry Feb.“(D 14.78 Dec. 22 8.93 27 15.09 Apr. 3 6.97 May 27 14.77 31 17.00 Mar. 6 14.57 1963 Oct. 8 15.96 May 1 8.45 Jan. 22 11.02 31 15-77 June ■ 2 11.37 WESTFORD 16 Feb. 26 11.57 Dec. 6 11.98 July 6 13.19 Mar. 26 7-53 19&T~ 1963 1963 Jan. 22 6.55 July 2 6.38 Dec. § 6.67 STOW 11 Feb. 27 7.22 Aug. 2 7.91 26 7.14 Mar. 26 5-70 27 9.01 1964 1962 1963 1963 Apr. 26 6.88 Oct. 8 10.92 Feb. 6 6.67 June 6 2.30 Mar. 26 1.48 Dec. 6 3.15 May 27 7.36 31 11.21 Mar. 6 5-73 Aug. 28 4.84 Apr. 26 3.03 26 3-57 Oct. 1 3.80 May 27 3.56 1964 22 3-11 July 2 4.33 Feb. 2.88 Nov. 23 2.44 Aug. 2 4.8l Mar. 6 2.15 Dec. 22 2.23 27 5.10 Apr. 3 1.06 1963 Oct. 8 4.72 May 1 3.09 Jan. 22 2.92 31 4.56 June 2 3.97 Feb. 26 3.60 July 6 4.46 ^3 Table 8.--Particle-size distribution in samples of unconsolidated deposits from CD OJ co PO ov 1—1 P 1 • • 1 a | i i i 1 1 a cd vd CVJ OJ mm O r-i o 1—1 1 VO OJ c— CO •H i—1 • • 1 i i i i i 1 a i w d i C— 4- CM CD 00 1—1 M s CO > *(D cd P CD CJ O • OO O VD CD CM -4 co O OJ • • • • • • i • I 1 1 1 1—1 LTN 1-1 CM 1—1 4" to o p • CD i—1 1—1 Cd > -P -P CD O CD Pj Cd CD 1-1 OJ -4 CM VD VD 1-1 CM m g H 1 a d cd i t— VD -4" -4 vd 4- ov 4 O UO o CO O • cd w • • Cd to P LTN CO H P • 4- -4 O Ol CM 1-1 O o CO O cd CO •H | i x d LTV 93 OJ -4- 4- VD* VD* OO LO VD CP VD --V Q rH 1-1 1-1 4“ CM 4- -P § X • d d •H CD CO LT\ cd O CVJ cd P CD • 4^ O CD O VD 4" VD oo CO O 4 CD d 1 Pc •H uo OJ* ov 1-1 1-1 t4 CM* 4" 1—1 4" VD* i P Ph OJ OJ OJ 1-1 4- LTN OO CM OO CD d 1-1 > M • •H V_' Ph LTV CD OJ -P £ rH CD •H • t- CVJ OJ o O CD CM OV CM 4- 4 Ph 1 cd LO rH CD VD UO IP- 4- LTN CM 1-1 co i cd >5 OJ rH H 1-1 1-1 -4 oo CQ P VD < CD O > • CD 4 CO LTN P> w OJ to VD M O t- CP o CM -4 VD oo CO a • • • i n 1 -4 t4 ov 1-1 CM 1-1 VD EH 4- OJ OO -4 -4 OO rH 4 o 1—l o CO • CM VD CM • • • • • • • • • • • • • • • • • • • • • • • • • CO rH OO rH w to 4 4 - 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