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<br /> <br />Operations <br /> <br />W <br />\ I . : <br />~~. '~. ~] <br />" '7 <br />. " ~ <br />; ~ <br />t <br />, <br /> <br /> <br />Water relpased horn tile ou1lel works al Glen Canyon D<lm <br /> <br />Reservoirs <br />During the water year which ended Sep. <br />tember 30, 1984, the Upper Colorado River <br />Basin yielded 21.425,000 acre.feet, or 180 <br />percent of the long.time average, The dis. <br />position of this runoff was as follows <br />Acre.feet <br />Net reservoir storage cllange 392,000 <br />Evaporation loss 752,000 <br />Bank storage change 14.000 <br />Release to lower basin 21,051,000 <br />Total yield 21.425,000 <br /> <br />The water supply In 1984 ranged from 167 <br />percent of normal on the Gunnison River <br />above Blue Mesa to 111 percent of normal <br />on fhe San Juan River above Navajo. <br /> <br />14 <br /> <br /> <br />~ .....~..'.';.,!.. 2;7.."";'. <br />",~', .."t~' <br />.~~.~~ ~~,~., <br />.. ,/:r.../ ')s. ,\: ..... <br />- ,;....:....... ,-.' , <br /> <br />Approximately 10,000 acre-feet of water spills from <br />erySlal Rcselvoir <br /> <br />Inflow to Flaming Gorge was 157 percent <br />of normal for water year 1984. The April <br />through July unregulated runoff into Lake <br />Powell was 15,258.000 acre.feet which <br />was 446.000 acre.feet higher than 1983. <br />Lake Powell's water surface elevation <br />peaked at 3,702.46 feet on July 8,1984. <br />almost 2.5 feet into surcharge. <br /> <br />Water storage at Glen Canyon decreased <br />470,000 acre.feet from October 1983 to <br />September 1984. Flaming Gorge storage <br />increased by 109.000 acre.feet and Navajo <br />and Blue Mesa storages increased 116.000 <br />and 49,000 acre.feet. respectively. <br /> <br />Fontenelle Reservoir in Wyoming increased <br />by 4,000 acre feet. <br /> <br />~t;~, ~. "" <br /> <br />jil'....~,.!!!""'..' "'c.o' <br />9 '.. '. "'?lI <br /> <br />....~~~~.~ <br />,,' <br />'I <br /> <br /> <br /> <br />Water is being released from two spillway gates at <br />Morrow Poinl <br /> <br />Rivers <br /> <br />Due to high carryover reservoir content <br />from 1983 and another record high runoff <br />In 1984, releases from the reservoirs were <br />much higher than the minimum required <br />for fish. recreation, or any other demands <br />The releases from Flaming Gorge were <br />rarely below 3,000 cubic feet per second <br />(cfs) and were as high as 8.000 cfs for 8 <br />days The minimum release from Crystal <br />Reservoir was 1.700 cfs. The maximum <br />release was 9,700 cfs, The maximum out- <br />flow from Lake Powell was 44,000 cfs which <br />was maintained from May 6 through <br />July 23. 1984. This included maximum <br />outlet works discharge of 17,000 cfs <br />combined with a maximum powerplant <br />release of 27.000 cfs, <br />