Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,500 cubic feet per second
(cfs) to 24,000 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 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 20 11000 447.7 13600 641.2 16600 1094.5
Jul 21 11000 447.7 13600 641.4 16600 1094.4
Jul 22 10500 447.7 13800 641.6 16600 1094.3
Jul 23 9500 447.9 13800 641.8 16600 1094.2
Jul 24 11000 447.9 13800 642.0 16600 1094.1
Jul 25 11000 447.9 13800 641.6 9200 1094.2
Jul 26 11000 447.9 13800 641.3 10400 1094.3
Average 10700 13700 14700
Jul 27 to
Aug 2 11400 447.8 13500 641.5 14100 1094.0
Aug 3 to
Aug 9 11000 447.2 12600 641.3 12600 1094.1
Current Lake Powell storage is 16,276 thousand acre-feet (KAF) (67 percent of
capacity). Lake Mead storage is 11,011 KAF (43 percent of capacity). Total
system storage is 35,729 KAF (60 percent of capacity). Lake Powell elevation
is 3,642.30 feet.
The projected April-July forecast for the Colorado River is 7.8 million acre-
feet or 98 percent of average.
Yesterday, the average Colorado River flows were 485 cfs near the Yuma Fourth
Avenue Bridge and 1,758 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 58 cfs. The
Morelos Dam diversions for the week of 20-Jul-2009 are expected to be 1,716 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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