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<br /> <br />Consumptive ll:<;P of ......1t('1 101 illi~iltion .....ilhin 11H' Ba:<;in is <br />responsilde 101' tlie lalgest r1('pletiUllS 01 the colorado RivPI. Exports. <br />reselvoir eV.:lpOLltion, <lilt! municip;]l,lnd ilHhl!';lri:ll 11<;10'5 ;11<';0 :If'f'''lIllt f"r <br />;........ lesse'l but significal1t dqdctiollS. The follo'Jill.':; 1.,tJ!c summ.n iZl'; both the <br />~ Uppel and Lo.....er Colorildo Rivel Basin IIses, illcluding il-ihutaties to the <br />C) Color.ldo River in the Love,. Basin (41. <br />C'J <br /> <br />Table IV 1. AVl'r.1ge '-'<1(('1 tlSt' ill the Colorado Rivel Basin <br />fOr 1976 8U (in 1.uuo aCle leet) <br /> <br />1-", <br />1.6RJ <br />5.lfln <br />453 <br />50 <br />4,2)Q <br />Jc':l7 /1 ~"y 'I.$Z..5'/ <br />, j / <br />The major pint of the lrilllsh?l:<;in rlpplerion~ in 1I1P UpPE':'1- Rilsin t<:: <br />m.lde ?It hi~be' elpvatiolls ....here the '<;,lJiniry CilllCentlatioJl:<; ,llf' very 10\0'. <br />This removal of high qllill i ty ...-atel '-e5111 ts in th(' remaining 110.....s dovnsneam <br />becoming more concentlatli'd ('w'n though Soml' salts ill€' lemuvpd hy rhe '-'ater <br />delivered to another ba!':ill, Many transhasin rli-l("sion~ have l)(>pn mnrle over <br />the yeats. and an additional Illlmbel ale Plojected to Ot'r.:lll ill the future, <br /> <br />_TlP~--2..f_llse <br />Reservoi r evaporat ion <br />and chanlle] lo!';sps <br />Irligated aglicllltule <br />Municipal arlfl illdustr iill <br />Fish, vildlite. and fPt:reiltion <br />Tlarlsbasill expOfts <br /> <br />_ !!JPpr_~..ls_i~o....e!:.. Basin <br /> <br />758 <br />1.984 <br />l7B <br />n <br />727 <br /> <br />\later exported from lhl' Uppef Ra~in rltlrillp, rIll" period lQ/.} 72 <br />avel'''ged about 360.000 aCle-fef:'t pel YPiil. Completinn of ""ell large projects <br />as the Colol"ddo- Big Thompson, Duchesne TUllnel. Rouel ts Tlllrllcl. ,Illl! more recent <br />projects increased expol ts to about 7?7,OLlO acre- teet per yeal for 1976-80, <br />IJith a peak in 1918 of H~2,OtlO ,1Clt:' feet, <br /> <br />8. Effects of Vater Ou~JJ..!.Y 011 Vatcor Users <br /> <br />1. ~atiofl. Esthe!:.i~~. and f:..!.~leries <br /> <br />The lIl.ljar instream USf'<:: in the Colorado Rivf'l' illc111rle hyc1t'oelectric <br />pOIJe.. p.opaf:<ltinn of fish and aqualic life. recreation (ilwluoing sIJimminr.. <br />IJaterskiing, boating. rafting, etc.). and e~thf:'tics. A lIumbPt of conflicts <br />bptveen 'Jater uses have bef'ome Plominent is!';ues in l'e,crlt ye,ll'!';. <br /> <br />There can he m.ll\Y lr;tnf'offs in .......I(Af quality. f'lIt r-ophi {'ill ion, aml <br />esthetics both in a lesf'I'Joir ilnd dovnSllf.'ilm, df'jlrndinp; on the oeplh of <br />reservoir OIithdraIJal "llld tIlt" flushing rale. The d~pth of IJithdr,l'Jal <br />influence!'; the temperatllle awl nutL ient leleases horn rt tl"<;ervoiL These <br />releases Cdn no'J be contloll€'d to some degn:e by the use of selective <br />withdraval st"Ucttlres: ho,-,ever, conflicts have occulled ill Ihe olleration of <br />these facilities. The contljcl. stpms fl-om the dilfen'lIcE'ill the optimum <br />temperatures for cold Vater [ish like trout and '..arm vater endemic or <br />endangered species like the stjllavfish. <br /> <br />IV J <br />