Lower Colorado River Operations Schedule
Releases from Davis and Parker dams will vary from about 4,500 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 16 12000 447.9 13600 642.2 14100 1087.5
Aug 17 11700 447.7 13600 642.3 14100 1087.5
Aug 18 10700 447.6 13600 642.3 14100 1087.5
Aug 19 9500 447.7 13600 642.3 14100 1087.5
Aug 20 11100 447.6 13600 642.3 14100 1087.5
Aug 21 11700 447.4 13600 642.1 11400 1087.5
Aug 22 11500 447.2 13600 641.9 11600 1087.5
Average 11200 13600 13400
Aug 23 to
Aug 29 9400 447.3 13000 641.9 13400 1087.5
Aug 30 to
Sep 5 9100 447.2 13500 641.1 12400 1087.3
Current Lake Powell storage is 15,576 thousand acre-feet (KAF) (64 percent of
capacity). Lake Mead storage is 10,402 KAF (40 percent of capacity). Total
system storage is 34,119 KAF (57 percent of capacity). Lake Powell elevation
is 3,636.35 feet.
The observed April-July runoff for the Colorado River is 5.8 million acre-feet or
73 percent of average.
Yesterday, the average Colorado River flows were 1,010 cfs near the Yuma Fourth
Avenue Bridge and 1,321 cfs at the Northerly International Boundary. The
average release from Painted Rock Dam was 1 cfs and Alamo Dam was 50 cfs. The
Morelos Dam diversions for the week of 16-Aug-2010 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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