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<br />''''. ~j:.6~;:';&,~" ,,-' ,:,,-- '= .....~,;-,..~....;......-li,-.'. ~ -iit.;;;':_.w-";.!..:a~'~ "...;..;S.',,;i-':;"IIi<;' .,.' '''''''.M.' .)lI~~-::.i.{''';:'~-'-.-.i-~ 2-";\A';':~_&'~'AI!1.:"'~'.. <br />.. ..'r ,.0&./... ".i,;.Iio..--w~~- ._~ ~"j'.::. <br />._ ....-P <br /> <br />" <br />1'- 1. <br />~ 10 <br />~.. <br />=eU <br />:5U <br />~U <br />... '0 <br />.. <br /> <br /> <br />--...._~--............ <br />J 10 15 20 25 30 So 10 ISo 20 25 30 50 <br />JUNE JULY AUGUST <br /> <br />Pig. 3. Doily high water temperature at the mouth of the Yampa River lor 1968-1970. <br /> <br />IJO <br />120 <br />2"0 <br />lUOO <br />I'- <br /> <br />~ ::[ <br /> <br />ii 10 <br />~ 'Ot <br /> <br />"::L' <br />20 <br />10 <br />o 20 U JO <br />JUNE <br /> <br /> <br />---~._---'------"'-- <br />5 .0 ~ 20 2!Jo <br />JULY <br /> <br />Fig. 4. Turbidity change for the SUmmer 01 1968 in the lower Yampa River measured <br />by a Hach Model DR-El Colorimeter. <br /> <br />head sucker) are commonly found in medium-sized tributaries of the <br />upper Colorndo basin. Of particular interest was the occurrence of the <br />chub, dace and llanncJmollth in the dry, middle part 01' thc riycr, dom- <br />inating the fish fnuna of that are,!- Bluchead suckers were foulId in <br />the upper and lower sections only [IS till')' f,l\-or Inrger rime nrcns. No <br />rare and endnllgered specics were fOllllCi in the Dolores system. <br />The Yampa lEver cOlltainpd all ill(~ pillin' fi-h(." found in the npper <br />Colorado Hiver vasiJl, tlw reason [wing Ihat most of these species arc <br />large river fish and the lower Yillll[la is all intermediate ,lrea !;et'H'('11 <br />tributary habitat and large river habitat. Both lal'ge riwr specip:; <br />(Colorado sCJuawfish, bonytai] chub) amI tribulary sJlecies (roulldtail <br />chuh) were present. The [ish fcnllla was dOlllinaled by the natiyc f1all- <br />nelmouLh sucker. hluehcad sucker and roulltltail dmb. <br />The Yillllpil Bin'r system contains t\\'o fj"hp, no\\' considered rare <br />.IIHI (.ndangen'd, Color.Hlo squawfish illld hllTI' ;ck clud). It rOlltaillS <br />two others tllat arc also Yf'ry rare. hllmpllilck , r .1Ild bOl'Ylail cllldl. <br />!\'one were common in the streillll ('xcepl Coj, Hlo slluawfish during <br />J Illy. <br />Colorado sq\la\\fish alllludilllCl' 1'0-;(' sllarph' \\"IIl'1I riYl'r 1l'lIq)('I'.I- <br />Inn's stilhilized at flS--70 F. The Yalllpil is n'idli,"cly cold aud Illrhid <br />during sprillg I'lIl1olT. dparill!.!: alld warllllllg ns \\alel's l"l'cpd,' d\lri\lg <br /> <br />W9 <br /> <br />~...,~~ IJ=--.. ~.''T'''''!'''':'"''l'''"'''''~~~'''''''''''''~~~lIf~,.,'.''io."..:",._ :';"'~~~.~'_"~?.._'F'-~""""'_"._ ~,__~.._ <br />