05/19 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)
May 19 12,000 448.7 15,900 643.0 21,800

1146.2

10,600
May 20 12,500 448.6 15,900 643.4 21,800 1146.0 10,600
May 21 11,700 448.7 15,900 643.8 21,900 1145.7 10,600
May 22 8,100 449.1 15,900 644.2 21,900 1145.5 10,600
May 23 13,700 448.9 16,300 644.6 21,900 1145.3 10,600
May 24 12,500 448.9 16,300 644.4 14,400 1145.2 10,600
May 25 12,500 448.9 16,300 644.1 12,800 1145.2 10,600
Average 11,900 - 16,100 - 19,500 - 10,600
May 26 to Jun 1 12,600 448.9 16,400 644.2 17,200 1144.3 11,100
Jun 2 to Jun 8 13,000 448.9 15,900 644.0 15,900 1143.9 14,100

Current Lake Powell storage is 12,256 thousand acre-feet (KAF) (50 percent of capacity). Lake Mead storage is 16,096 KAF (62 percent of capacity). Total system storage is 34,738 KAF (58 percent of capacity). Lake Powell elevation is 3605.23 feet.

The observed 2003 April - July unregulated inflow into Lake Powell is 4.5 million acre-feet, or 57 percent of average.

Yesterday, the average Colorado River flows were 1,154 cfs near the Yuma Fourth Avenue Bridge and 1,460 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 May 19, 2003 are expected to be 1,660 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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