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COLORADO BASIN July, 1997 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 2.9 indicates that for June the COLORADO RIVER BASIN <br /> basin water supplies were well above normal. Flow at the 5 _ Surface Water 5"°°'Y History <br /> gaging station Colorado River near Dotsero averaged 12,916 4_ <br /> cfs as compared to the long term average of 5,674 cfs. . 3_ . <br /> Storage in Green Mountain, Ruedi, and Williams Fork .1 ; - . -` <br /> reservoirs totaled 109% of normal as of the end of May. 2- r <br /> Y. 1- <br /> Outlook g D g �, --- -- <br /> Flows have greatly subsided and flooding from _1_ <br /> [ T. ' <br /> snowpack runoff is over. Calls continue on the tributaries. ,,; = '/ �((��,,` ! r <br /> s _2_ _jf` , " <br /> Based on the similarities to last year, a Colorado mainstem o _ ` 7 <br /> call is anticipated in early to mid-August. 3- <br /> -4 ............ ............1.......................... ... .. ... <br /> JAN88 JAN89 JAN80 JAN91 JAN92 JAN93 JAN94 JANOS JAN96 JAN97 <br /> Administrative/Management Concerns wNTMVYEAR <br /> This season's peak flows on the Colorado River at <br /> various gaging stations were as follows: 8,270 cfs at ' <br /> Kremmling on June 12, 15,600 cfs at Dotsero on June 6, <br /> 21,700 cfs below Glenwood Springs on June 5 & 6, and <br /> 37,600 cfs at the Utah state line on June 3. The peak flow of COLORADO RIVER NR. DOTSERO <br /> the Roaring Fork at Glenwood Springs was 7,390 cfs on June 3.2 FLOW BY WATER YEAR <br /> 8. 3 . <br /> 2.8 <br /> 2.6 <br /> Public Use Impacts o 2.4 <br /> 2.2 <br /> During June hay was baled and stacked in the lower i 2 . <br /> basin counties such as Garfield, Pitkin, and Mesa while in > IA <br /> higher Grand county the low lying hay fields were under <br /> water from high flows. . s 1.2 <br /> O.B <br /> 0.s r <br /> 0.. <br /> 0.2 - <br /> 0 <br /> Oct Nov Doc Jan Feb March April May June July Au0 Sapt <br /> MONTH <br /> p WET(1984) O CRY(1977) A AVG X 1987 <br /> REPRESENTATIVE RESERVOIRS <br /> 1130 COLORADO RIVER BASIN <br /> 35 <br /> \\ <br /> 126 <br /> ;::::/// <br /> 110 <br /> 10O 7\ \\ <br /> • 90 v <br /> _v//e'"\\ \\ <br /> 41 BO <br /> ?V g 60" ////^\\\\ <br /> I v <br /> • SO <br /> a <br /> 7. 40 7\\\\ <br /> 30 <br /> 20 <br /> 0 /-\ — /\ <br /> preen Mountain Ruatll Wr111awW ForIr <br /> ® Avy. 6/30 content° ® 6/30/97 Contents <br /> • <br />