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<br />APPENDIX-WATER-QUALlTY DATA FROM THE UPPER COLORADO
<br />RIVER BASIN IN A NATIONAL CONTEXT
<br />
<br />Fo. 8 COfT'pi~I' v,ey, ot Upper CO~1l1O RM'I' Bas,n (jlltll a"';IIo' adO:j,!l()nallolormauon aOOlJl ~fFC ~l\(:hmar~5 used v,s,t aur WeD sITe at
<br />hl'.p .. .""ater.uS\ls.gov'''WWQa. AlSO v,St! me t;AWOA Da:a Warer->o<Jse t~r access 10 NAWQA data sets at "1'P .'(,,,10",,"' e. usgs gO'o'..wObCb...:nawoa!nawqa "ame
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<br />This appendlll. IS a summary of chemical concentrations
<br />and blQloglcallndicalors assessed In the Upper Colorado
<br />River BaSin. Selected results lor this Basin are graphically
<br />compared to results !rom as many as 36 NAWQA Study
<br />UnllS Investigated from 199110 1998 and to national
<br />water-qualny benchmarks for human healtn. aquatic lile, Of
<br />flsh-eallng wlldlile. The chemical and blQIOQlcallndlcators
<br />shown were selected on the baSIS of frequent detection,
<br />detection at concentrations above a national benchmar~.
<br />or regulatory or SCientifiC Impor1ance, The graphs illustrate
<br />how COnllltlons associated with each land use sampled In
<br />the Upper COlorado River Basm compare to results from
<br />across the Nation, and how conditions compare among
<br />the several land uses, Graphs lor chemicals shOw only
<br />detected concentrations and. thus. care must be taken to
<br />evaluate detection frequenCies In addlhon to concen-
<br />trations when comparing study-unit and national results,
<br />For example, SlmaZlne concentrations in Upper Colorado
<br />River Basin agricultural streams were Similar to the
<br />national distribution, but the detection frequency was muCh
<br />higher (72 percent compared to 18 percent)
<br />
<br />CHEMICALS IN WATER
<br />Concentralions and detection frequencies, Upper Colorado Rlwer
<br />Sasin, 1996-98-Oetect>on .sef\SlUWlty ""roes among ctlemocals ar>cl
<br />tnus.hequenc,esa'enotll"ectlycompa'ablearnongCtlemIC!lIS
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<br />. Doltecte-dconcenlrahonlnShJ<1yUn,1
<br />1! F'eQuenoes 01 oolecl'on, m pe,cC1nt Detecl,on lfeQuellC'e-s
<br />were nol censored al any common feporllng l,,,,,t Th"iett.
<br />hand column IS \t1e study.urHtl'eQuencyal\llthe roghl'hiInd
<br />column OSll1e MtlOnaltf&qvency
<br />NOlmeasuledorsampl(lt;lzeles-slhantwQ
<br />,. SllKly.uTI"samples,ze Forgtounclwa',er,lnenumbe'or
<br />samples 's eQual 10 !he numbe. 01 "'ells sampled
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<br />Natlonalfan~.oldelecte-dconcentraUon.,bylandu.e,'n36
<br />NAWQA Study Unit.. l~l~96-A.mges oncIude only sampjes
<br />,'1 \...h,cha chemlC8l...-asdelectecl
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<br />Slfeamsll"lagncullurala'eas
<br />Slreams In urban Il'eas
<br />$ueamsan(lf1V(1f$drlllnl!19m"edLand"ses
<br />S na I ~O..... \jfo"nCl .... E11e. ,n ag"cull u' al a 'ea s
<br />Snalk>wgfoundwale.,nur'bana'ells
<br />MaJOraqu'll'fS
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<br />Nallonal...-Iltet..qualitybenchmatks
<br />'lallOf\illt:>el1Cl1ma'l<s'ncludeslanda'ds"l1dgu>(!elrr>es'el.aledIO
<br />d"n~'ng."'-ale'Qua:Jty,e"lenalo'pfOlectjngl/'leneatl/'lO'aqualiCl.le.and
<br />agoallorp'e>ef1""Ils1,eameul,optllcat>onduelophosphOrvs SOure&s
<br />,nc!l.oaellll!U S EnwonmenlalP'c!ect.onAgel1CyllncllhflCaMa.an
<br />COL>t'iClIOlf,',,,,s!eI501!t>eE'1Wlfoom"'''1
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<br />D"P.l"9-wal",qual,tf(8PQloeslogrouna"'alerar'oll:>urtaoewall'''
<br />P'OIec!1()r1 ot alluallC I~e lapploes 10 s"....ce ...-a:8' ortty)
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<br />P'evElf1!IOI" Oleu1focmo<;ilt'onll'ls:'ea'-"S'101'law,ng Jltecl1y,nto
<br />LakesOf'mpOvndmenlS
<br />NO tJef'd1ma..... !or 1l"".,ng.wale'quaIJr,'
<br />No N'.-.d'ma'. lor "'Q~'-'<::llO" Of aquatK: I,'l'
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<br />28 W:tler Qllali[~ in [he L'pper ColLlr;hh) River Ba"m
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<br />Pesticides in water-Herbicides
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<br />Benll"railn lBalan. 8enefrn. Bonaianl'"
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<br />C,'IlMZine IBlade. F-omoH
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<br />DlCamt>a (Bllrwel, Dianal, Scons P'0Iu'"
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