Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,300 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)
---- ----- ---- ----- ---- ----- ----
Sep 28 9000 447.5 11600 636.0 11000 1093.8
Sep 29 8500 447.4 11600 635.9 11000 1093.7
Sep 30 8000 447.3 9300 636.0 11000 1093.7
Oct 1 7000 447.3 9500 636.1 9700 1093.7
Oct 2 8500 447.1 9500 636.1 9700 1093.7
Oct 3 8500 446.8 9500 635.8 6400 1093.8
Oct 4 8500 446.6 9500 635.6 6700 1093.8
Average 8300 10100 9400
Oct 5 to
Oct 11 8100 446.3 9400 635.2 8600 1094.0
Oct 12 to
Oct 18 7300 446.5 9300 634.7 8600 1094.2
Current Lake Powell storage is 15,506 thousand acre-feet (KAF) (64 percent of
capacity). Lake Mead storage is 10,949 KAF (42 percent of capacity). Total
system storage is 34,342 KAF (58 percent of capacity). Lake Powell elevation
is 3635.74 feet.
The observed April-July runoff for the Colorado River is 7.804 million acre-
feet or 98 percent of average.
Yesterday, the average Colorado River flows were 1,007 cfs near the Yuma Fourth
Avenue Bridge and 1,289 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 69 cfs. The
Morelos Dam diversions for the week of 28-Sep-2009 are expected to be 1,995 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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