Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,600 cubic feet per second
(cfs) to 18,400 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)
---- ----- ---- ----- ---- ----- ----
Jul 27 11300 446.9 14400 640.5 16100 1094.7
Jul 28 11300 446.9 14400 640.6 16100 1094.6
Jul 29 11000 446.9 14200 640.7 16100 1094.5
Jul 30 9500 447.1 13800 640.9 16100 1094.4
Jul 31 11000 447.1 13800 641.0 16100 1094.3
Aug 1 11000 447.1 13000 640.6 8200 1094.5
Aug 2 11000 447.0 13000 640.3 9300 1094.5
Average 10900 13800 14000
Aug 3 to
Aug 9 11000 446.4 13000 639.9 12600 1094.6
Aug 10 to
Aug 16 10200 446.5 12700 639.6 12600 1094.7
Current Lake Powell storage is 16,212 thousand acre-feet (KAF) (67 percent of
capacity). Lake Mead storage is 11,024 KAF (43 percent of capacity). Total
system storage is 35,632 KAF (60 percent of capacity). Lake Powell elevation
is 3,641.76 feet.
The April-July forecast for the Colorado River is 7.80 million acre-feet or
98 percent of average.
Yesterday, the average Colorado River flows were 502 cfs near the Yuma Fourth
Avenue Bridge and 1,730 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 59 cfs. The
Morelos Dam diversions for the week of 27-Jul-2009 are expected to be 1,573 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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