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<br /> <br />co <br />00 <br /><:r. <br />L <br /> <br />PART VI. EVAWATIOj;S '..;F EXISTU;; 2.A.LINITI C .I;DITIJNS <br /> <br />A. Quality of ~ater Stations <br /> <br />A p::-ir.1a!"'Y purpose of this report is to surr_~.ari;'"e '....!!.t.el' quality con- <br />ditions for the Colorado River Basin. Thi~ ;~t 3ur.~ari=~~ chemical qual- <br />ity tmder both histori-:::al 8.r;d prese:",t conditions of' "'ate!' re::ource -ie'lel- <br />or'r:J.ent. an] ut.ilization. Ar,ticipated :h!'l.11g'~S :~; f'J.tlU"e c~.e!:":.ical quality <br />are ,liscussed ir; Part '/II. nt!-':er water qi.:!lli <, para:!"<f:",en: are discussed <br />i;, Part x. <br /> <br />Evaluation:,: of t.he salinity 01. ti1e ....at-r in t:;e tari:': are r..ascd on <br />quallt:.' or .,.-ater and streamflow rer~or-::$ at. 17 sele.:ted stations. Each <br />statior! is co!",.sidered to reflect i'1m.; and w'lter lualit:,' con1itions at <br />its location. Records were generally 'i'lailabl, at ea\:h st.a';"ion :'o:r the <br />tin:e period cor,sidered by this report. 1941 to F.70. 'r,'here reco:rds were <br />not available, missing dat1':\. "'.ere estirnatel by correlat.iof, ..dth other sta- <br />tions. <br /> <br />Basic Jata slWmarized in this rep"Jrt were pri::".:l1"'ily ottained from <br />records 01" the G-eological Survey developed by <J. ,:..ontir:'lir'5 program "01' <br />collection of .....ater data which is su:ppo:rted ir. jart by a transfer of <br />Itrnds irOM the Bureau of Reclarratior.. <br /> <br />Locations of the 17 key stations are sho...Tl or. F.>;ure 1. <br />flow and quality records for eac~ stat lor. are sho''''l. on Figu:r~ <br />source 'Wd r.J.ethod of derivation of basic data 1"01' ea.'-':l o~' the <br />are brie:'ly jiscussed in the :'ollowin;:; sec~ iorj~, <br /> <br />Available <br />2. The <br />stations <br /> <br />1. Key Sta~ions .....ith Co~p1ete RecorJs <br /> <br />Records of :'10-". and ''''ater quality <ire availabl.':: l'or !LII of the 1941- <br />70 period for ~he Greer. River at ~reer. River. :'t.a:. Stati.on no. 4); Colo- <br />rado River near Ca."neo, Colorado (Station :Io. '7): ,jlJ..'1nison River near <br />Grand Junction. Colorado (Station No. 8): Colorai~ Ri/er near Cisco, Utah <br />rS':.atio'1 fio. c")1: a:1d Sat: ~uar. Piv'er near t::luff. ",~', ~~.a+-io,. ;';0. :'1). <br />',:i::or ~x1;e:'.3ior.s ody ."ere needed ~_o fill i!'. $:'o.r. -::''O'riods of n~cord for <br />a rev; of ",J-:ese sta:.io::s. TI-,e f"olora"lo Fi...e!. "',ear ~le;'-"ood ~prj,;[""s gage <br />was :no'..ei. fro~ abo-,e :0 belo.... -I-,:~e ::':oari!',. ~or;': a- ~:.~ e:-1d of -:1:e ."'ater <br />year l00S6. 2ubse,:!uer,t records for "~,is ~-I-a'io,. -,:ere ad'us':ed 'by sub- <br />trac'-.i!'lg :.he Roaring :ork nows. All re~or'ls 'h~re ot':air.ed fro;:-, tJ-:e <br />~eolo.gical Survey publicatio~s. <br /> <br />2. ;':e:: S~atio;,s ....'i ':.!-. Fartial Records <br /> <br />;ro;o:er: Ri''-er ,;ear :;reer. Fd-.rer. ','h'omi::>< 2'-""10.;; ';0. 1'. --:10.'" records <br />are a...ailable at ~his s--::a":io:1 from April 1<.151 a"d .:;.uali ::; recoris from <br /> <br />3,) <br /> <br />