WSP07886

• File Number: 8282.600.10
• Description: Colorado River Operating Annual Reports
• Basin: Colorado Mainstem
• Date: 1/1/1994
• Author: USDOI/BOR
• Title: Operation of the Colorado River Basin 1994 Projected Operations 1995
• Water Supply Pro - Doc Type: Publication

FLAMING GORGE RESERVOIR
(GREEN RIVER)

Water Year 1994

The elevation of Flaming Gorge Reservoir at the beginning
of water year 1994 was 1838.9 meters (6033.1 feet) with 4,279
million cubic meters (3,469,000 acre-feet) of live storage (92
percent of capacity). At the end of the water year, the
elevation was 1834.1 meters (6017.43 feet). Live storage on
September 30, 1994, was 3,561 million cubic meters
(2,887,000 acre-feet), n percent of capacity.

Unregulated inflow into Flaming Gorge Reservoir for water
year 1994 was 847 million cubic meters (687,000 acre-feet),
42 percent of normal. Actual regulated inflow was 926
million cubic meters (751,000 acre-feet). The April through
July runoff was 498 million cubic meters (404,000 acre-feet)
or 34 percent of the long term average. With this very low
inflow, Flaming Gorge lost approximately 661 million cubic
Dieters (536,000 million acre-feet) of storage in water year
1994. Water year 1994 makes the 8th consecutive year of
below normal river flows in the Upper Green River Basin.

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In 1994, Flaming Gorge was operated in accordance with the
rmal Biological Opinion on the Operation of F1aming Gorge
(FBOFG), issued in November 1992.

The FBOFG outlines the reservoir operations during the
spring, summer, and early fall months which may provide an
improved habitat for endangered endemic species of fIsh.
To accommodate the FBOFG, releases of l22 cubic meters
per second (4,300 cubic feet per second) were released from
Flaming Gorge for four weeks from mid-May until mid-June
to coincide with the peak flow of the Vampa River. These
releases met the research objectives of a sustained flow at
Jensen, Utah, of between 283 and 340 cubic meters per
second (10,000 and 12,000 cubic feet per second). After
completion of the runoff, flows between 39.6 and 51.0 cubic
meters per second (1,400 and 1,800 cubic feet peT second)
were maintained at the Green River near Jensen, Utah.

FlAMING GORGE RESERVOIR

Reservoir

Stonge Capacity
Normal Pool FJC\I8tioa
Minimum Power Pool
Surface .Area, full
Racrvoir Length, full

4,624 miJJioo cubic __ (3, 749,lXXl ~...)
1840.9 me'e", (6040.0 rcet)
1789.4 mete", (S87I,O rcet)
17,OOS bectaru (42,020 oaa)
146 kilometcn; (91 mila)

powemlant

Number of Unitl
Total Capacity

3
108,000 KW

7