Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,500 cubic feet per second
(cfs) to 18,700 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 averages for the following 2 weeks, are scheduled as follows:
Parker Davis Hoover
Dam Lake Dam Lake Dam Lake
Average Havasu Average Mohave Average Mead
Release Elev. Release Elev. Release Elev.
Date (cfs) (ft) (cfs) (ft) (cfs) (ft)
---- ----- ---- ----- ---- ----- ----
Jun 29 10500 448.4 12600 640.6 14700 1095.6
Jun 30 10500 448.3 12600 640.7 14700 1095.5
Jul 1 10000 448.2 13300 641.0 17400 1095.4
Jul 2 7000 448.5 13300 641.3 17400 1095.2
Jul 3 10000 448.5 13300 641.6 17400 1095.1
Jul 4 10500 448.5 13300 641.3 10000 1095.2
Jul 5 10000 448.5 13300 641.1 11100 1095.2
Average 9800 13100 14700
Jul 6 to
Jul 12 11900 447.9 13900 641.3 14700 1094.9
Jul 13 to
Jul 19 11800 447.7 14600 641.1 14700 1094.5
Current Lake Powell storage is 15,862 thousand acre-feet (KAF) (65 percent of
capacity). Lake Mead storage is 11,095 KAF (43 percent of capacity). Total
system storage is 35,225 KAF (59 percent of capacity). Lake Powell elevation
is 3,638.80 feet.
The projected April-July forecast for the Colorado River is 7.1 million acre-
feet or 90 percent of average.
Yesterday, the average Colorado River flows were 659 cfs near the Yuma Fourth
Avenue Bridge and 1,702 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 56 cfs. The
Morelos Dam diversions for the week of 29-Jun-2009 are expected to be 1,729 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 exercised while using the river between Davis Dam and the
Mexican Border at San Luis, Arizona.
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