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_ _--1 \V'L :o:,~;,~,:I,~~J~~.::~,~,',,;~/ · June 27, 1979 Dave Z1yler ACtornev at Law 901 East Main Street P.O. Box 986 Rangely, Colorado 81648 0242 D",az: Dave: ,Enclose~, please find 2 copies of th~ Rangely Ope=ation st~dy sl>o-,;ing. the effect on the propos,ed Rans;ely: ?r:oject by the se~ior ~iqhts upstream bei~g exer=isac. !~ orce= ~o ~a~a the $tudy conclusive from 1963 to 1973, it was necessary to extracolate f~ontheDavic E. Fle~ing study of future water de~an~s-for the period between 1371-1978, since the fle~ing study is current only.to 1970. Based on an available storag~ of 50,000 A.P. along .~h .. c. h b "200 - '-1' I f W~~~ a m~n~~~u ~~S~ yp:ss o~ czs anc ~ e~~n; s utur~ upstre~~ oparation study, the Rangely res;~voir would .be recuced bv 12,100 A.F. in the water vears 1977 a~d 1973. Since the l~77-1978 season was the worst year on re~ord, this would i~~~cate ~~at'sufficient water ~ould have been available for all o~=vious years of record p~ior to and inclujing iSiS. The enclose~ - maps concur with the a~ove information. Th~ ope~ation study was reworked, holding all the variables except the 200 cfs bypass, which ~as chan;ec to 300 cis. Results indicate that the Rangely Reservoir ~ould not have been able ~o meet the reservoir demands for a peri~d of 9 ~onths duri~g 1977-1978, if 300 cfs was the required bypass. . ~he o?eration study ~as a;ain.r~~~r~~d to ce~e~i~= what ~~~~~u~ by~as- "'ould J."s~ ern~"Y Mho R"--"'l'/ R"'-"'-'--'''' ,- ''''~17-19~~ -,,= :' ;:''''' ..... 1.0 ':-'_ l"... _ . _..'-:;_... _'::'__"~""_ -... -;I - '0. .....- requi=ed bypass turn~d out to be a??~cxi~a~ely 243.crs6 Assuming 16,000 A.F. from the Rangely Rese=~oir cc~plete1y cons\':,::led and 80~ of the remainder of '"ate= ,.\s=1. ',;ill continue- downs~=sam, approximately 33 cfs additional ~~~;= ~ill en~a= Utah. With a minimum bypass of 200 cfs pl~s ~et~rn flow, the total reaching Utah would be approxL"ately 233 cfs. With a ~ini~~~ bypass of 249 cfs, the total would be 287 cfs. In addition, to the operation study with the 200 cfs bypass and 50,003 A.F. depletion, please find a White'River 3asin map sho~ing th~ upstream wat~r ri;hts, senior to the Ra~gely ?rojec~, that ~are operated in the Fle~i~g Report. J150HIWli;;150 p, o. 80X 571 GRA.....O jU.\'CTlO,'/, COLOR.J~O 3: 5.;1 ilJ;.;~~= 2.._.-j2':~ Attached also. is en excerpt from that're?o"t. ~d Currier ~ill fol1c~ up later with ~ore infc=~~tic~ as re~~i=~d~ ,-,..:; \. , \'~ '-