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<br />FLAMING GORGE RESERVOIR <br />(GREEN RIVER) <br /> <br /> <br />Water Year 1986 <br /> <br />Flaming Gorge Reservoir started water year 1986 at elevation <br />6,028.6 feet with an active storage of 3,293,000 acre-feet. <br />Releases from Flaming Gorge nam for water year 1986 were <br />projected to be 1.22 MAF for the most probable operating <br />plan based on the October forecast of an unregulated inflow <br />of 1.65 MAF. ' <br /> <br />Flaming Gorge Reservoir was gradually drawn down to <br />elevation 6,023.7 feet by January 1, 1986. The forecast of April <br />through July runoff made on January 1, 1986, was 1.56 MAF <br />or 129 percent of average. Powerplant releases for January <br />and February averaged 2,500 cfs. On March 1, 1986, the April <br />through July forecast had increased to 158 percent of average; <br />subsequently, powerplant releases were increased until on <br />March 21, maximum powerplant capacity of 4,200 cfs was <br />reached. Runoff forecasts increased to about 170 percent of <br />average by April 1, 1986. In addition to maximum powerplant <br />releases, the river outlet works were opened to the maximum <br />release of 4,000 cfs on May 10, 1986. These releases were <br />sustained through July 23, 1986, when the river outlet works <br /> <br />ACTUAL RELEASES <br /> <br />WY 1986 <br /> <br />1000 CF!I <br />'0 <br /> <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />NDJFMAMJJASO <br /> <br />were closed, and maximum powerplant releases were <br />reduced. <br /> <br />Releases from Flaming Gorge Dam were constrained to a <br />maximum of 2,600 cfs during the months of August and <br />September to provide interim protection to the endangered <br />Colorado Squawfish. This species is currently being studied <br />as part of the Recovery Implementation Program in the <br />Upper Colorado River Basin, and restricted summer flows <br />are thought to enhance the downstream habitat for the fish. <br /> <br />The actual April through July unregulated runoff into Flaming <br />Gorge Reservoir was 2.28 MAF or 188 percent of average. <br />The peak inflow during the runoff was 18,800 cfs on June 9, <br />1986, and the peak total discharge was 8,280 cfs May through <br />mid-July. The total inflow for water year 1986 was 3.02 MAF <br />or 183 percent of average. Total releases for the water ycar <br />was 2,592,000 acre-feet of which 584,000 acre-feet bypassed <br />the powerplant. The spillway was not used. <br /> <br />FLAMING GORGE RESERVOIR <br /> <br />Reservoir <br /> <br />Acre-feet <br /> <br />Elevation, feet <br /> <br />Maximum Storage <br />Rated Head <br />Minimum Power <br />Surface Area, fuU <br />Reservoir Length, fuU <br /> <br />3,749,000 <br />1,062,000 <br />233,000 <br /> <br />6,040 <br />5,946 <br />5,871 <br />42,020 Acres <br />91 Miles <br /> <br />Powerplant <br /> <br />Number of Units <br />Total Capacity <br /> <br />3 <br />108,000 KW <br /> <br />7 <br />