Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,700 cubic feet per second
(cfs) to 23,500 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 24 10000 447.2 12000 640.9 15800 1094.1
Aug 25 10000 447.0 12600 641.1 15800 1094.0
Aug 26 10000 447.0 12600 641.3 15800 1094.0
Aug 27 8000 447.2 12600 641.5 15800 1093.9
Aug 28 10000 447.2 12600 641.7 15800 1093.9
Aug 29 10000 447.1 12800 641.3 8400 1093.9
Aug 30 10000 447.1 12800 641.0 9500 1094.0
Average 9700 12600 13800
Aug 31 to
Sep 6 9200 447.3 13100 640.3 12100 1093.9
Sep 7 to
Sep 13 9100 446.9 13200 639.3 11600 1093.7
Current Lake Powell storage is 15,865 thousand acre-feet (KAF) (65 percent of
capacity). Lake Mead storage is 10,957 KAF (42 percent of capacity). Total
system storage is 35,055 KAF (59 percent of capacity). Lake Powell elevation
is 3,638.83 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 1,080 cfs near the Yuma Fourth
Avenue Bridge and 1,345 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 24-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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