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<br />EVAWATIONS OF E:.:rSTrIi<.; ~;'~LI!rL"I
<br />
<br />);il I'_l)N~
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<br />I-iay 1951. The recQ!'d.: :iave been exteEcie-:l. t-::.~,... 0 II,i,1 by con.e:lation
<br />".:1 t~ r.ear-by sta tiOl:~.
<br />
<br />G!"een Ri':er near "::reer:i.9.1e, Ut~ah (Stat.im; r;,. _,1,--:"10-": :n.;;a::;ureJT,~I'.ts
<br />o!' co:;.parable iat.a a!'e availabl.t:: ::-.or t!;:is statio:: ..or . :le report period,
<br />bu.~ chemical 'luaU ty lat.a a!'e Bvai 1 able only ~~or tb-=- ye~r:;; 1957 through
<br />1970, inclusive. Extensi,e :oI"!"elatioI'.S ^it~ 't.~er a,ailatle records en
<br />t~;e Green River sY3ten. ."'ere emplo:...~ d to levelup est.i:mte::; .'01' ji~solved
<br />solids.
<br />
<br />;Juchesr:e kL'.'cr !lear Ran-ilett,_ltah 2tatio:. ;,;.;. :'::).--?lm: r;~cori::;
<br />:tave been obtained ,::o:lt,inuousl:.,' sir.ce 19~3 a.r:i~uaLt:/lata 9.!"E: a.,9.ilable
<br />:'01' 1951 and 1957 thrQU;;h 1970. Correlati::ms ....'::.t )the!' station~ in the
<br />Du~h('sne River S'Jstem ......ere em.-;...loyed, to estirr..'lte ',!lC bta ..or the missinr:;
<br />pE:riod.
<br />
<br />Sar. Ra:''iel River near ',;reen H:ver, Ub.tJ (f,~r:.tion !.u. . ).--,:':orrelu-
<br />tions were used to estimate no... a~ t:1L; '''LEe ;'1'01:; l:!!~l to 1945 after
<br />;.;hich measurements ot ~'low were available. Quality sampling started in
<br />1940 and is complete '::or the remainde!' of the study period except for
<br />1950. Extensions of' available :iata pr\Jvided satis:'act0r~,f estimates 0,;'
<br />quality fer the missing years.
<br />
<br />Colorado River near '.ilenwoo:l Snrin..--o;!::.:':olor~dc l;~~:'ation No. 6).__
<br />Correlations .....ere used 1.0 estirr13.te tl1epality Jat;). '.or :he 1941 "ear
<br />prior to October 1. ':-i.ualit~r rec:orJ.s are available a:'ter ;ctobp.r L 1941.
<br />Flow recorJs a.re aV'lllable :'02. the er.tire period G.. st1.dy.
<br />
<br />San Juan River ;;<::3.1" Archulet.a. :1<:>.... :,;exico l~t<oit,~Ol; ::.. lO).--?or the
<br />period 1954 to 1970 no.... aJ~d qualit;:,. Jal.a pre:.-ocrl',ecl are ;!. ~of.".bination of
<br />:;;easureI:ler.t:> obtained ne::u: Archuleta ani at Blanco. .,e",. :.:.::xico. with a
<br />:'e."" aJjust!:'leIlts god correlations. Correlations ....-err:- e~pl~..ed to est.irr.at.e
<br />-:.-.htO' data 1'or 19\1-:.54. i..!.uality lata :'or 1909 3lld :"'j70 -~.er-=: esti!T'2.Led :'rom
<br />once a month sampline; at the Ar..:huleta iaf~int". ;:tatior..
<br />
<br />Colorado ~iveT at Leer. Ferry, Arizon'l (:::tatic:1 ::0. 12).--?r--.is sta-
<br />tio:1 t-as co::mlete fla.... Tecoreis available i'or the stu.-:.-: ;;eriod but lacks
<br />'u~'-;+-"' O'~ .'-a'e- measure-er's "or 10"1 104. In!.;, .,: l.'O'~ "'u'lity
<br />'~ (:;W..~...,j _......_ .., ..... _ ....., -,.. ";"+<>. ;...".~ ~...'" (. ... ~
<br />data :'01' these years ....'ere e"'tL;,[!,u~.j by e;.:teLs..:'.'e :::u1:i:;:1e ::o~Telations
<br />usini5 data r'OT t.he ColoraJo River :'"leu :'.:.3CO, VtaL. a:,j near Grard "':ao-
<br />yon. Arizona; the Green Hi .;er, Uta:.: ar.::. the Sar'. ,--U3r. E\i ver near 31u:'f,
<br />Uta:'.
<br />
<br />Cl.1 "'.""r ..~.. ,-1.~..~"., .....,..." .~. ",:,..,1: I') to"l
<br />o or_ 0 ...l.e_ ..ea.. "..an._ ~'-'-'."Ol., .......1_0...0.. ...,~a......u.. _,C). _~ ,--._ow
<br />recorj.s are 3.nl.ilable :.01' tree report perini ':l.na c::e::;iC"al qualit~. records
<br />are also 3.vailacle ex,:;eJ:t :'or tr:e re:riod Dece~er 19!;.2 to Au~..n 1943.
<br />Q.ualit:,.' data for the I'eriod o~ cissing recor.is ....'ere e.::.i::-.:ated ~rom rec-
<br />ords at ups:rean st.atiD~s.
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