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<br />Operations <br /> <br />- <br /> <br />" <br /> <br /> <br />Blue Me5<l Dam 01 !ne A.<,plf\all UM. comPi<!It!d ,n 1965 <br /> <br />Reservoirs <br /> <br />During lhe water year which ended Sep- <br />tember 30. 1981. the Upper Colorado River <br />Basin yielded 5.556.000 acre-feel. or 46 <br />percent of the long-lIme average. <br /> <br />Runoff on Ihe Colorado River above Glen <br />Canyon Dam was the third lowesl on <br />record (since 1906). The disposition 01 this <br />runoH was as 101l0ws: <br /> <br />Acre-feel <br /> <br />Nel reservoir storage decrease <br />Evaporation loss <br />Bank storage decrease <br />Release 10 lower basin <br /> <br />3.205.000 <br />686,000 <br />220.000 <br />8,295.000 <br /> <br />Total Yield <br /> <br />5.556,000 <br /> <br />Water storage at Glen Canyon decreased <br />by 2.328.000 acre-feet from October 1980 <br />to Seplember 1981 Flaming Gorge <br />storage decreased by 160.000 acre-teet. <br />and Navajo and Blue Mesa storages <br />decreased by 308.000 and 362.000 acre- <br />feet. respectively_ Fontenelle Reservoir in <br /> <br />10 <br /> <br />r- <br /> <br />- <br /> <br />~ <br /> <br /> <br />-" <br />~- <br />~- <br /> <br />- <br /> <br />- <br /> <br />"0 <br /> <br />,~. n...I';.''''l'.'"" s.,. <br /> <br />Wyoming missed filling by only 2.000 acre- <br />feet and storage decreased by 53.000 acre- <br />feet. Morrow Point and Crystal Reservoirs <br />were operated at full capacity nearty the <br />entire water year. <br /> <br />"~~""'" <br />~-,,~-~~ <br />, <br />:1 .II!I <br />',"\. <br />~ .. <br />\:~ - <br />~ <br /> <br />~~/~ <br />t.{ <br /> <br />il.-_ <br /> <br /> <br />\~D"OW PornT _ 1"5T In,n...,,n OOUble cwvalwe Oilm <br /> <br />Rivers <br /> <br />lower releases from Glen Canyon Dam <br />during March. April. May. and June <br />allowed lhe Weslern Area Power AdminIs- <br />tration to integrale purchased power into <br />the COlorado River Slorage Project <br />system when it was readily available_ <br /> <br />Minimum releases from Glen Canyon <br />Dam were maintained greater than 3.000 <br />It. ~s dunng the recreatIOn season and <br />greater than 1,000 II. ~s during the re- <br />mainder of the year, Flows in the Green <br />River below Flaming Gorge Dam were <br />maintained greater than 800 It,'1s. Gunnl' <br />son River t10ws below the diversion to the <br />Gunnison River Tunnel were maintained <br />greater Ihan 200 It. 'lis. Flows below Fon. <br />tenelle Dam were regulated to meet irriga- <br />tIon. fish and wildlife reqUirements. and <br />power demands. San Juan River flows <br />below NavajO Dam were regulated to <br />meet irrigation and fish and wildtlfe re- <br />QUirements. Minimum releases from <br />Navajo Dam were maintained al 530 II, 'lis <br />dunng March. April. May. and June for <br />Ilshery enhancement on the San Juan <br />River. <br />