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<br />Entan, Il'. M., 1950, Bismllcance of en.rbotuLtes in irrigation waten. Son BeL,
<br />v. UD, no. 2, p. 128-133.
<br />-1954, Formubls for estimating leachiDg and gypsum reqwreJ:lI.ents of
<br />irr1gati.on waters; 'reXllB Agr. Expt. 8m. Mise. Pub. 111. 18 p.
<br />EldrIdge, G. H., 1889, On. some stratigraphical and structural features Of the
<br />country about Denver, Colorado: Oolorado Bel. Soe. Proc.,' v. 3, pt. I.
<br />p. StJ-U8.
<br />liImmons. 8. F., Oross. Wbitml1D, IlIld EldrIdge; G. H., 1806, Geology of the
<br />Denver Basbl in Colora.do: u.a. Geol. Survey MOD. 21, tiliE! ];I.
<br />Hague, Arnold, and EimnOnll, B. F.. 1877, Descripl:1ve geology: U.S, Geol. Explol'.
<br />40th Pnrnlle1 Rept. (King), v. 2, 890 Po
<br />Henderson, JW3iUB, 19.20, Tbe Oretaceous formationll of the l10rthenstern Colo-
<br />rado plains: Colorado Geol. B~rvey Bull. 19, p. '1-57.
<br />Hunt, O. B., 19M. Ple1stol!eD.e and Recen!: deposits in the Denver area, 0010-
<br />rn.do: U.S. Geol. Survey Bun. 91l8-0, p. 81~140.
<br />J'aeob, O. liLt Ifl44, Notes on del:ermin1Dg permeabWf::y by pumpfDg tests under
<br />wl1ter-tnble conditlons: U.S. Geo1. Survey open-file report, 2G p,
<br />- 194'1, Drawdown test to determine etfeetive radius of artesian well: .Am:
<br />Bin::, Civil Engineers T.I:'IUlS., v.m, p. 104:1-3mO, paper 2B21.
<br />KIng. Clamll!e; 18'18, Systematic ;eo1cigy ~ U.S. GaoL Explor, 40th Farall91 nept.,
<br />v. I, 80S p. .
<br />Lovering, T. 8., 1..prand, :er.. .A... IIo.vington. 0, B..' and Wilson, J. B,t lD82, Fox
<br />Bllls formation, northeastern Oolorado: Am. Assoc. Petroleum GeoloBists
<br />Bull., v.18, no. '1, p. '102-700. .
<br />Lovering, '1'. B., and Goddord, E, N.. 1950. Geology and ore deposits of the Front
<br />Range. Colorado: U.S. GeoL Survey Prof, Paper 228, 31~ p. .
<br />LOWlY,1/.. L" dr., and Jobnson, A.. F., 1942, OonsumptIve uaerof water for agri~
<br />calms: Am. Soe. Olvil Engineers Trans., v. 88; no, 8. pt. 2, p. 1243-1302,
<br />paper 2158.
<br />Mather, It. F., Gilluly, Jo:mes. and Lusk, R, G., 1928, Geology and all and gas
<br />prospects of northeastern Oolorado: "0'.8, GaoL Surve;r BulL 79B-B, p. 65-124:.
<br />:Hacy; K. F" 1950. Report on the relo.tion of nitrate'cDDcentrations in wen waters
<br />to the Dccurrent:e of methemogloblDemla: Nntl. Research Counell BUll., Sani-
<br />tary l1IngllIeerJng o.nd Environment, app. D,
<br />M'eLaughUn, T. G.. 1946, Geology and gronnd.water resourees of plU'ts of Llncoln,
<br />Elbert. and ~ Puo Countles, Oolorado: Oolorado Water Oo.nserv. Board,
<br />Ground Water Ser, BulL 1.189 p.
<br />Meinzer, O. Eo, IlIld Wenzel, L. It., 1942, Movement of. ground wa.ter and its r91a-
<br />tiQn to head, permeabllltr. and storage, chap. XB ill hydrology: Physics tlf'
<br />the. eorth SBr., pt. 9: New YOJ::'k, :M:cGl'aw-EU1l, p. 444;-4'17,
<br />PetrI. II. R:., and Smith. R. 0., 1959, Investigation of the quality of ground water
<br />in the vicinity of Derby. Colorado; U.S. Gaol. Survey open-Jlle report, 71 Po
<br />Powell, S. T., 1954, Water contUttonIDg for lndustry: New York, McGraw-Hill.
<br />548 p.
<br />Rankin, O. g., Jr., 1938, Study of well seeUoDs li1 northeastern Colorl1dOc: Am.
<br />Assoc. Petroleum. GeologIsts BUll., ,.. 17. nO'. 4, p. 422-482.
<br />Rohwer, (Jarl, 1D42, The uoo of current meters in melJ.Stlring pIpe d1seharges:
<br />Oolorado .A.gr. Expt. Sta. Tech. BulL 21l, 40 p.
<br />Scluieider, Pan! .A.., J'r., 1962. Reeort'ls and logs of selected wells and test holes,
<br />and chemical analyaes of ground Wllti:r in the SOUth Platte River basin in
<br />western Adams and southwestern Weld Counties, Ooiorndo: Oolorado Water
<br />Oonsarv. Board, Basic-Data Report no, 9, Ground Water SerIes.
<br />
<br />129
<br />
<br />LITERATURE CITED
<br />
<br />128 GROUND WATER, SOUTB PLA.'l'TE RIVER BASIN
<br />
<br />to increase the mineralization and to change the type of the water
<br />from calcium carbonate to calcium. sulfate or sodium sulfate.
<br />Wa.ter from. the bedrock differs widely in mineralization from onB
<br />stra.tigraphic unit to o.nother, as well as within units; the specific
<br />conductance of ground wllter that was sampled ranged from 836 to
<br />5,04:0 micromhos pet' em. In most of the units the water is of the
<br />sodium bicarbono.te type, is soft, and has n. relatively' high 6oneen-
<br />tration of fluoride. W n.ter :f1'Om the Dawson arkose WQS the least
<br />mineralized of the water snmpled, md water from Sorne strata in
<br />the Laramie formation WI1S the most minemlized. Water from the
<br />bedroclc probably is poor for irrigation and ranges from poor' to
<br />good for public. supply and domestic use.
<br />It would be advisl1ble to study long-tenn changes in quality of
<br />water from key ~ells, to determine the source and extent or the con-
<br />to.m.ination by petroleum waste in the valleys of Snnd Creek and the
<br />South, Platte River and to' determine the extent of and potential
<br />:for development of the aquifer that produces relatively soft water in
<br />the vicinity of Greeley.
<br />
<br />LITElRATURF OITED
<br />
<br />Amerien.n Wa.ter Works AsBDcll1t1on, 1950, Water quality and treatment: Am.
<br />Water Works Asaoc. Manuo.I. 2d ed" 451 p.
<br />Back, WlUtam, 1067, Geology and ground~Wllter teatUl'e5 of the Smith lUver
<br />plain, Del Norta OountY'. Oallfornia: U.S. Geol. Sarvey Water-Snpply
<br />Paper 1254. 76 p.
<br />Bjorklund, L. J.; Ilnd Brown, :B" F., 1951, Geology and ground-water resources
<br />of the lower South Platte River valley between Bardin. CDIlll'ado. and
<br />PutOUt Nebraska. with It. s&lltion on the chemica.l quallty of tl1e ground
<br />water. by EL .A. SwenllOD: U.S, Geol. Survey Water-Supply Paper 1818,
<br />4B1 p.
<br />Blair, R, W,t 1951, SubBurfa.ce geologl.c eross sections of Mesozoic: rocks in
<br />northen.stcrn Colorado: U.S. Geol. Survey 011 Ilnd GllB Inv" Ohut 00 42,
<br />2 sheats.
<br />Bryan, Xlrk. lIDd Rlly, L, L., 1040, Gl!ologte antiquity of the Llndenmeier BIte
<br />in (Jolorlltlo: Slnitbllomn.n Misc. CoUn.. v. 00, DO. 2, Pub. 3554, '18 p,
<br />Oalifornla Institute of Te.chnology, 1952, water quality IlrlterllL: State Water
<br />Pollution Control Board PUh.3t 1112 p.
<br />Code, W. lll., 1943, Use af ground water for Irrigation in the South Platte valley
<br />of Colorado: Colo1'ado Agr. Expt. Stat Bull. 488. 43 P,. 1 pi" 17 figs.
<br />-lDli8J Water table fiuctuo.tlous in e.nstern Oolorado: COlorado State Uni\'.
<br />Expt. Stat Bull. 500-8, 3d: P.
<br />Dane, 0, H., f1IId -Pierce. W. G., 1936. Dnwson and Laramie formations In
<br />southeOlltel'l1 part of DellVel' Bu.';J1n, Colorado: Am. ABaoe. Petroleum Geol-
<br />ogists Bull., v. 20, DO. 10, p, 1508-1828.
<br />Darton, N. B.t 19ot;, Preliminary report on the geology nod underground water
<br />:resonrl!elS Of the central Great Plains: U.S. Geul. SU1'Vey Prof. Pnper 32,
<br />4SB p.
<br />
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