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<br />; OPERATIONS <br /> <br />Reservoirs <br />During the water ynar which ended <br />September 30, 1985. tile Upper Colorado <br />Rive" Basin Yielded 17.512,000 acre-teet, <br />or 147 pel cent at lile long-time average. <br />Tile disposition at this runott was as <br />tallows. <br /> <br />Acre-feet <br />---- <br /> <br />Net reservOIr storage <br />change <br />Evaporation loss <br />Bank storage change <br />Release to lower basin <br />~ Total yiQld ~ <br /> <br />-2.245,000 <br />740,00 <br />-186.000 <br />19,203,000 <br />17,512,000 <br /> <br />The water supply in 1985 ranged trom 88 <br />percent to normal on the Green River <br />above Flaming Gorge to 194 percent at <br />normal on tile San Juan River above <br />Navajo Intlow to Blue Mesa Dam was <br />148 percent at normal. <br /> <br />The April through July unregulated runotl <br />into Lake Powell was 11.965,000 acre- <br />teet which was 160 percent at normal. <br />Lake Powell's water surtace elevation <br />peaked at 3.700.12 teet on July 1, t 985. <br /> <br />Water storage at Glen Canyon decreased <br />1,587,000 acre-feet tram October 1984 to <br />September 1985. Flaming Gorge storage <br />decreased 389,800 acre-feet and Navajo <br />and Blue Mesa storages dec reased <br />47.900 and 61,500 acre-tee I. respectivety <br /> <br />Fontenelle ReservolI in Wyoming was <br />quickly drawn down in the spring of 1985 <br />due to darn safety concerns. As a <br />result, its storage decreased 146,700 <br />acre-teel. <br /> <br />Rivers <br />Due to high carryover reservoir content <br />Irom 1984 and another Iligh runoft year in <br />1985, releases tram tile reservoirs were <br />higher than tile minimum required tor <br />fish, recreation, or other demands. The <br />maxnnum mean daily releases were <br />4,180 cts for Flaming Gorge, 6,490 cfs <br />tor Crystal, 5,040 cIs lor NavaJo, and <br />45,500 cts tor Glen Canyon which includ- <br />ed an outlet works discharge 01 15,000 <br />cfs combined with the maximum <br />powerplant discharge of 31,500 cIs. <br /> <br />- <br /> <br /> <br />~':-.'~ <br />,. <br />..-4< <br />;.:~,. r <br /> <br />\' <br />". <br />I' ~, <br />i\? .~ <br />.--~_., <br /> <br />Glen Canyon Dam releasing wClter <br /> <br /> <br />f31ue Mesa Outlet works in operation <br /> <br />13 <br />