River Flow Advisory Bureau of Reclamation Upper Colorado Region Salt Lake City, Utah Vol

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River Flow Advisory Bureau of Reclamation Upper Colorado Region Salt Lake City, Utah Vol. 16 No, 5 July 1986 With most of the snowmelt runoff now gone, the latest forecast is 166 percent of average, 8 percent lower than last month's forecast. Colorado River at Westwater Canyon The flow of the Colorado River for the first part of July is 16,000 cfs. This is about one-half of the peak which occurred on June 8. Cataract Canyon including the Green River The flow of the Colorado River through the canyon is 32,000 cfs. This is about one-half of the peak flow which occurred on June 8. Lake Powell Lake Powell is at elevation 3,697 feet, 3 feet short of full. It is still possible for Lake Powell to fill this year. Colorado River through Grand Canyon Releases from Glen Canyon have been decreased to an average of 23,000 cfs with fluctuations from 31,000 cfs during the day to 10,000 cfs at night during July. The flow will be slightly higher in August. Upper Green River - Fontenelle Reservoir The inflow into Fontenelle Reservc,,ir is 7,600 cfs. The peak of 20,000 cfs. the highest flow since 1918, was reached on June 8. The reservoir is at elevation 6,476 feet. The highest elevation was 6,495 feet on June 21. The pr~sent release is 11,000 cfs. High releases will be maintained until the reservoir elevation drops to 6,443 feet. Green River Flows below Flaming Gorge Dam Flaming Gorge is now at elevation 6,033 feet, and is expected to reach full elevation of 6,040 feet in August. Releases from the dam are 8,260 cfs with no fluctuations. They will be reduced to about 4,500 cfs on about July 22. In August and September, the average daily release will be 1,700 cfs with fluctuations from 1,200 to 2,700 cfs. Page 2 Green River at Green River, Utah The Green River flows are at 14,000 cfs. The peak flow was 35,500 cfs on June 8. Flows are expected to recede for the rest of the sumner. San Juan River Current releases from Navajo Dam of 3,500 cfs will be maintained for several months. The flow of the San Juan River at Bluff is 7,000 cfs. The reservoir is now at elevation 6,083 feet, which is within 2 feet of full, and is expected to be drawn down to elevation 6,040 by the end of October. Gunnison River - Blue Mesa Reservoir Blue Mesa Reservoir is full at elevation 7,519 feet and will probably remain full during July, and then start receding. For current information on river flows call the National Weather Service River Forecast Center, Salt Lake City -- telephone number (801) 539-1311. For further information on reservoirs and releases call the Upper Colorado Regional Office of the Bureau of Reclamation in Salt Lake City at (801) 524-5571 or 524-5573. * * * .

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Geohydrology of the Westwater Canyon Member, Morrison Formation, of the Southern San Juan Basin, New Mexico Thomas E
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River Flow Advisory Bureau of ·Reclamation Upper Colorado Region Salt Lake City, Utah Vol 17 No
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