Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,600 cubic feet per second
(cfs) to 20,000 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 10 9000 447.0 12800 640.2 14500 1094.6
Aug 11 10500 446.9 12800 640.3 14500 1094.6
Aug 12 11000 446.8 12800 640.4 14500 1094.5
Aug 13 10500 446.7 12800 640.5 14500 1094.5
Aug 14 8500 446.9 13200 640.5 14500 1094.5
Aug 15 9000 447.0 12600 640.1 7200 1094.6
Aug 16 10000 447.0 12600 639.8 8300 1094.7
Average 9800 12800 12600
Aug 17 to
Aug 23 9800 447.0 12200 639.8 12600 1094.8
Aug 24 to
Aug 30 9600 446.8 12100 639.8 12600 1094.8
Current Lake Powell storage is 16,063 thousand acre-feet (KAF) (66 percent of
capacity). Lake Mead storage is 11,004 KAF (43 percent of capacity). Total
system storage is 35,388 KAF (60 percent of capacity). Lake Powell elevation
is 3640.51 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 513 cfs near the Yuma Fourth
Avenue Bridge and 1,381 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 50 cfs. The
Morelos Dam diversions for the week of 10-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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