Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,600 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)
---- ----- ---- ----- ---- ----- ----
Sep 14 8000 448.8 11800 640.2 10400 1093.6
Sep 15 8000 448.7 11800 640.1 10400 1093.5
Sep 16 8000 448.7 12000 640.0 10400 1093.5
Sep 17 7000 448.7 12000 639.8 10400 1093.5
Sep 18 8000 448.6 12000 639.7 10400 1093.5
Sep 19 8000 448.5 12000 639.3 7600 1093.6
Sep 20 8500 448.4 12000 639.0 7900 1093.6
Average 7900 11900 9600
Sep 21 to
Sep 27 9000 447.3 12000 637.6 9600 1093.6
Sep 28 to
Oct 4 8500 446.3 10700 636.4 8500 1093.8
Current Lake Powell storage is 15,620 thousand acre-feet (KAF) (64 percent of
capacity). Lake Mead storage is 10,928 KAF (42 percent of capacity). Total
system storage is 34,655 KAF (58 percent of capacity). Lake Powell elevation
is 3,636.73 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 1,144 cfs near the Yuma Fourth
Avenue Bridge and 1,313 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 66 cfs. The
Morelos Dam diversions for the week of 14-Sep-2009 are expected to be 1,300 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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