From the Associated Press (Ben Neary) via CBS4Denver.com:
The study found that up to 165,000 acre feet of water could be drawn from the reservoir each year through 2049 while still allowing enough water to generate hydropower and to meet the needs of endangered fish species downstream.
Drawing 165,000 acre feet a year over 40 years would draw the level of Flaming Gorge Reservoir down from its current elevation of 6,030 feet a bove sea level to just above 5,900 feet, the study found. According to bureau figures, the reservoir has a surface area of nearly 30,000 acres when its elevation is at 6,000 feet and its surface area would drop to just under 11,000 acres at the 5,900 foot level.
After 2050, as development in Wyoming increases, the bureau study projected Flaming Gorge Reservoir could sustain an annual diversion rate of 120,000 acre feet. The agency is updating that draft analysis, and agency officials say their projections of the amount of available water may well go lower.