Laserfiche WebLink
<br />a. lake Powell <br /> <br />Lake Powell began water year 1995 at elevation 3654.4 feet with a live <br />content of 17, 773,000 acre-feet, only 73 percent of capacity. Unregulated <br />inflow into Lake Powell for water year 1995 was 16,291 ,000acre-feet, 136 <br />percent of the long-term average. The peak regulated inflow to Lake Powell <br />was 2,680 cubic meters per second (94,500 cfs) on June 21, 1995. <br /> <br />Lake Powell finished water year 1995 at an elevation of 3687.1 feet and <br />storage of 22,311,000acre-feet, 92 percent of capacity. Lake Powell rose <br />to about 6 feet from full in August 1995. <br /> <br />During water year 1996, releases greater than the minimum release <br />objective of 8,230,OOOacre-feet will only be made if required to equalize the <br />storage between Lakes Powell and Mead or to avoid spills from Lake Powell. <br />Under the most probable inflow conditions, releases of 11,655,OOOacre-feet <br />would be made, and the reservoir would lose 399,000 acre-feet of storage. <br />Under the probable maximum inflow scenario, approximately 16,234,000 <br />acre-feet will b~ released during the water year, and Lake Powell would gain <br />570,000 acre-feet of storage. This maximum probable inflow would require <br />relea~es greater than 20,000 cfs for a lengthy period of time. It is estimated <br />that it will take two years of average inflow to refill Lake Powell. <br /> <br />The interim flow restrictions on the daily and hourly releases from Glen <br />Canyon Dam implemented in August 1991 will continue during water year <br />1996. A Record of Decision on the Glen Canyon Dam EIS will be completed <br />following the audit specified in the 1992 Grand Canyon Protection Act. A <br />monitoring program has been implemented and will continue to measure the <br />effect of interim flow restrictions on downstream resources. <br /> <br />Based on a request from the Transition Work Group of the Glen Canyon <br />Dam EIS, one week of high steady flows for research purposes is planned <br />from Glen Canyon Dam in March/April 1996. These flows would test the <br />effectiveness of the Beach/Habitat-Building flow recommendation in the Glen <br />Canyon Dam EIS and would require bypassing the powerplant. <br /> <br />b. Flaming Gorge Reservoir <br /> <br />Unregulated inflow into Flaming Gorge Reservoir for water year 1995 was <br />1,854,000 acre-feet, 112 percent of normal. Actual regulated inflow was <br />1,774,OOOacre-feet. The April through July runoff was 1, 175,500acre-feet, <br />or 98 percent of the long-term average. With this inflow, Flaming Gorge <br />gained 601,000 acre-feet) of storage in water year 1995. <br /> <br />61 <br />