Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,500 cubic feet per second
(cfs) to 23,000 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)
---- ----- ---- ----- ---- ----- ----
Aug 17 10000 446.8 12400 640.5 15200 1094.3
Aug 18 10000 446.8 12400 640.7 15200 1094.3
Aug 19 10000 446.8 12400 640.8 15200 1094.2
Aug 20 7000 447.0 12400 641.0 15200 1094.2
Aug 21 10000 447.0 12400 641.2 15200 1094.1
Aug 22 10000 447.0 12400 640.8 7800 1094.2
Aug 23 10000 446.9 12400 640.5 8900 1094.3
Average 9600 12400 13200
Aug 24 to
Aug 30 9600 447.1 12600 640.6 13200 1094.3
Aug 31 to
Sep 6 9200 447.5 13300 640.0 12300 1094.1
Current Lake Powell storage is 15,968 thousand acre-feet (KAF) (66 percent of
capacity). Lake Mead storage is 10,977 KAF (42 percent of capacity). Total
system storage is 35,225 KAF (59 percent of capacity). Lake Powell elevation
is 3639.70 feet.
The observed April-July inflow for the Colorado River is 7.814 million acre-
feet or 99 percent of average.
Yesterday, the average Colorado River flows were 1,061 cfs near the Yuma Fourth
Avenue Bridge and 1,338 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 55 cfs. The
Morelos Dam diversions for the week of 17-Aug-2009 are expected to be 1,310 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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