Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,300 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)
---- ----- ---- ----- ---- ----- ----
May 25 11000 448.6 15000 643.2 18500 1098.1
May 26 11000 448.6 15000 643.4 18500 1097.9
May 27 10000 448.6 15200 643.6 18500 1097.7
May 28 9000 448.8 15200 643.8 18500 1097.5
May 29 10000 448.8 15200 644.0 18500 1097.3
May 30 11000 448.8 15200 643.7 11500 1097.3
May 31 11000 448.7 15200 643.5 12600 1097.2
Average 10400 15100 16700
Jun 1 to
Jun 7 10900 448.2 14700 643.4 14900 1096.4
Jun 8 to
Jun 14 11100 448.2 14700 643.3 14900 1095.6
Current Lake Powell storage is 13,923 thousand acre-feet (KAF) (57 percent of
capacity). Lake Mead storage is 11,363 KAF (44 percent of capacity). Total
system storage is 33,040 KAF (56 percent of capacity). Lake Powell elevation
is 3,621.50 feet.
The projected April-July forecast for the Colorado River is 7.1 million acre-
feet or 90 percent of average.
Yesterday, the average Colorado River flows were 1,420 cfs near the Yuma Fourth
Avenue Bridge and 1,600 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 0 cfs and Alamo Dam was 88 cfs. The
Morelos Dam diversions for the week of 25-May-2009 are expected to be 1,580 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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