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<br />Upper Colorado River Basin NAWQA
<br />F ACT SHE E T
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<br />What Affects Water Quality In the Upper Colorado River Basin?
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<br />-Lori L. 'I'..d<l(<I. \n"/III C S;"IJIL~. tlllll'\'lIIt.\ 1: /),"/1,'/
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<br />The tJI)PCf Culllradu I{h l'r B~hin i.. lur 6U ..ILld~ unit-. ,l'It.'('ll'd fur \\ah'r-lIuaJit.\ "....(....'II1t..nl h., lilt'
<br />U.S. (;t'ulllj!kal Sunl'.' ~I" part Ill' Iht., :'\"i1tiunal \\'.ltl'r-(}Ilalit~ A..'t.......lIll.nll}rugram. l'ndt.'r,tanding tilt.,
<br />t'11\ irunlTll'ntul wiling of tht., l'pJl('r Color:.Hlll H:ht.'r Ba...in ..tLld~ unit i... important in t." aluating \\all'r-lIl1alit~
<br />i.....uc.. in the ha..ill. Inf'ufmalillll ahuLlI tht.' tll\ irullllll'nlal..clting idt.'ntifil'" tilt., h.....in dl:.lr:u.'It.'ri,tit.., .md
<br />indudc.. nalural and human fat.'lor.. Ihal alft.'l'l tilt., ph~..k.ll. (:hcminl!. .lIld hiulllgil';11 (lllalit~ HI' \'all'r in lI11'
<br />h.hill. Thi~ infurlll:.llillll ha... hl'l'n u"l'd III dc~ign ..urt"an.'-\\all'r- and grullncl-\\;lll'r-llllalil~ ...alllJlling nl't\\llrh....
<br />inlht' ha-;inIH a~...l'''''" u\l'rall \\alt'r quality lit" lht' ha...in.
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<br />INTRODUCTION
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<br />III ll}<jl.ltw 1.5. Gt'lllogIC;11 Surh'~ It SGSl h....~;tlll" ill1rk-
<br />menllhe :,\;Jtiollal W.lI..'r-{)u;tlil~ A'w"rncnl rS:\\\{):\) pro~r;II11.
<br />Go;th ollh..' ,\.:\\\ 1)..\ I'I"gr;l1l1 ;lIC I" (II d..'_(flhe \\Jk'r-"lll;llil~
<br />l'ondition, for;J I;lrg..' rar111llh.., ';111011-' Irc,h\\;uer ,lr.';lIn,.
<br />river,. and ;1I,jUller,; t ~ I J.."(flh...' h,l\\ ..... ;l1l'r 4uahl~ I' I:h;lIlging
<br />(I\Cr 11llW; and \.' Illnpn'\l' llll' undchl;ullling 'It Ih... I'rim;lr: n;I(ur;11
<br />and hum.1Il f;Il'tl'h Ih;ll ailed \\..It..-r~411;lijl~ l'''ndllioll' IL..'ah~
<br />and 'llh..'r'. I'Nll), To ....11T1l'kl...lhi, pmgr;lfll.lhc l.SGS plan, to
<br />lIl\e'ligJ!c 60 ri\t'r ha_ilh ,IIIJ ,14tJlf...r 'y_I...llh (_luJ) L1nih)
<br />Ihfllll~h"U! Ilw L:nilt'l! SI;Ik',. Inf(lnll;lllillll,hlall1..'J ffllm lh..'_.'
<br />Jifkrt'nI ,tud~ uni" ....illlwlr h'J..'r.11. SIJle. alld 1.'1:..1 agt'IKi..',
<br />lI1a~t' needed l11atl;Lgt'lI1t'lll_ It'gulah'r:, ;tnd 1Il('IlIII'Tlng J..'t.l\i,m, hI
<br />h....t1t.r rnll...d_ U\C. ,l1Id ..'nhant't' .....n...r r...",urt.t',. Till' fat't _heel.
<br />hJ,t'J on AI'l\>J;lt"'1 ;lIld nllwr_ (1911hl. de\..'flht', hi'\\' Ih~' ..'11\ Iron.
<br />llIent;11 ,cuing 01 Ihe t .pl'",:r C..I"rado R.l\l.'r Ih'Hl t lTOL.) ,tLld~
<br />uni\alfcl'b "",llt'r l../uillil~ II1lht' h;l_in. Inf"nn;lIt"n alll'ullh~'
<br />ell\in'nm.::nl;ll _t'lllng, .... hlth ,~ ha_.::d I'll nalural ;\Ild hUIll;U1
<br />f;l~'l{\r,_ ....;j_ U_t'J III \k,ign _urLl<.'t'-\".H.::r- ;I/\I.! ground-\\.alL'r-4uillil~
<br />,;unpling nt'I\\.I'rk_ r"r Ih~. _Iud~ Ulll!.
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<br />The teOL _luJ~ unit h...:;llt'd 111 .......'lL.m \o!l'r,..dll, h.l_,J ,lr;un-
<br />Jt:l" ;lfeJ 1'1' ...1....'111 17)\11(' 'o.ju;!r~. mill'_ tllg. II. Th~' pflrn...ry ri\,,'r
<br />\\.llhin lh.:: h",'lII. th~' Colorado R.i\l'r. on!,'lIlal.." III lht' Ill11UIl\;lln_
<br />of ~"t'rnral Colnradll ...nJ lip\\. , ;1t'll.,UI '::JO mik_ _Illlth\\..::,t ill\ol.l...h.
<br />-'1.Jjor trthul..n..._ h' Ih... Color..d" Rl\.::r ;Ir.:: Ih~' Blu~'. E;lgk. Rpar-
<br />lIlg Fork. ;lI1J (fUl1IlI_nn R.lh'r,_ In I 'NO, ropLlLtllon mlh.. h;Nn
<br />\\.J_ ...hI'lI1 .::.qJ\(MIIHur~'.1LI11rCen'u_. I 1I'Ji h. Tht' brg.'" J'l'pula-
<br />tion l."t'nll'r in lht. P.l_IIlI_ the ;trcil .\rounJ Grand Junl."lhln. Colll.
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<br />ENVIRONMENTAL SETTING
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<br />1111.' ~'n\in>nllll.'nIJI _"'!llng ...lIIK' l-(-(H. 'ludy unil pn,\'iJ"";1
<br />frJIll"\H'r~ for undcr_l,mJllIg the ha'1I1 dlarat'k'f1_11":'_ \\. hi..:h arc
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<br />1I11J'l,n;Ullllllh.:: J~'_lgll ul an 1IlIt'gr;lled _Iud) 1'1 tlK' ,ur1;Jt'C
<br />W;t'~'r .m..! ground.... .11..'r 1'1' the ha_lIl, Salur;d 1;Il"\or_ lhal ;tlle..:l
<br />h;lllgfllund W;ttl'f-411;dil~ t."mllllon_ in IlK' I 'COt ha_1I1 arc
<br />plt~ 'Ingral'h~. dinMll'_ g"',,logy. and ,nil-. Ilulll;1Il l;ll."Ii'r_ Ih..,
<br /><llk..-1 \~ak'r-"IlI,IIi\~ cllndltlll!h ;lrc \\;lief 1lI;1II;lg.::m...1l1 ;1Il..] u,c
<br />;mJ blld lb.:: III ,I,... h.l_IIL
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<br />UPPER COLORADO RtVER
<br />BASIN STUDY UNIT
<br />UTAHOO COLORA~
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<br />COLORADO -"'_ I
<br />PLATEAU ~ '~_'~
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<br />EXPLANATION
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<br />~.aphicPr""'lI\CllB-ound......
<br />Study Unit 80undllfV
<br />Surla.;:.-Waler-S...,p"'ll $ltll
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<br />Figure 1. Locahon ot the Upper Colorado R,ver BaSin s!ucly UM
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