04/28 PROJECTED LOWER COLORADO RIVER OPERATIONS SCHEDULE
Water Flow Reports


Colorado River



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PROJECTED LOWER COLORADO RIVER
OPERATIONS SCHEDULE

Releases from Davis and Parker dams will vary from about 8,000 cfs to 22,000 cfs during a 24-hour period. River levels will vary during the 24-hour periods with the higher levels coinciding with periods of peak hydroelectric power generation. Levels below the dams are usually highest during the afternoon and early evening. Average daily releases may vary in response to changing conditions.

Average daily releases and midnight lake elevations for the week, as well as anticipated average for the following 2 weeks, are scheduled as follows:

Date Parker Dam Average Releases (cfs)
Lake Havasu Elev.
(ft)
Davis Dam Average Release (cfs) Lake Mohave Elev.
(ft)
Hoover Dam Average Release (cfs) Lake Mead Elev.
(ft)
Glen Cyn Dam Average Release
(cfs)
Apr 28 12,500 448.8 16,500 642.7 23,400

1148.7

10,100
Apr 29 12,500 448.8 16,500 643.2 24,000 1148.4 10,100
Apr 30 11,500 448.9 16,500 643.6 23,500 1148.2 10,100
May 1 11,000 449.0 16,800 643.7 18,500 1148.1 10,600
May 2 12,500 449.0 16,800 643.7 17,400 1147.9 10,600
May 3 12,700 449.0 16,800 643.6 16,300 1147.8 10,600
May 4 12,700 449.0 16,800 643.6 16,300 1147.7 10,600
Average 12,200 - 16,700 - 19,900 - 10,400
May 5 to May 11 12,900 448.7 16,800 643.6 17,400 1146.8 10,600
May 12 to May 18 12,700 448.5 16,800 643.7 17,400 1145.8 10,600

Current Lake Powell storage is 12,272 thousand acre-feet (KAF) (50 percent of capacity). Lake Mead storage is 16,409 KAF (63 percent of capacity). Total system storage is 35,018 KAF (59 percent of capacity). Lake Powell elevation is 3605.39 feet.

The forecasted 2003 April - July unregulated inflow into Lake Powell is 4.8 million acre-feet, or 61 percent of average.

Yesterday, the average Colorado River flows were 940 cfs near the Yuma Fourth Avenue Bridge and 2,770 cfs at the Northerly International Boundary. The average release from Painted Rock Dam was 15 cfs and Alamo Dam was 25 cfs. The Morelos Dam diversions for the week of April 28, 2003 are expected to be 2,450 cfs.

All RIVER USERS should remember that fluctuating river flows may conceal or create natural hazards such as moving sandbars, gravel bars, unstable riverbanks, floating or submerged debris, or other unfamiliar obstacles. Caution should be be exercised while using the river between Davis Dam and the Mexican Border at San Luis, Arizona.

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