Lower Colorado River Operations Schedule




Releases from Davis and Parker dams will vary from about 4,400 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) 
       -----       -----     -----     -----     -----     -----      -----
       Aug 31      10300     448.0     13000     642.5     12300      1078.2
       Sep  1      10400     447.8     12900     642.4     12400      1078.2
       Sep  2       9600     447.7     12900     642.3     12400      1078.3
       Sep  3       7800     447.8     12900     642.2     12400      1078.3
       Sep  4      10200     447.6     12900     642.2     12300      1078.3
       Sep  5      10100     447.4     12900     642.1     12300      1078.3
       Sep  6      10200     447.3     12900     642.0     11600      1078.3

       Average      9800               12900               12200

       Sep  7 to
       Sep 13       8700     447.0     12900     641.4     12200      1078.4

       Sep 14 to
       Sep 20       8800     446.9     12900     640.9     12200      1078.4


Current Lake Powell storage is 12,691 thousand acre-feet (KAF) (52 percent of capacity).
Lake Mead storage is 9,850 KAF (38 percent of capacity).  Total system storage is 30,932
KAF (52 percent of capacity).  Lake Powell elevation is 3,609.61 feet.

The preliminary observed April-July unregulated inflow for the Colorado River is 6.71
million acre-feet or 94 percent of average.

Yesterday, the average Colorado River flows were 1,010 cfs near the Yuma Fourth Avenue
Bridge and 1,257 cfs at the Northerly International Boundary.  The average release from
Painted Rock Dam was 0 cfs and Alamo Dam was 25 cfs.  The Morelos Dam diversions for the 
week of 31-Aug-2015 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.

                This Schedule can now be accessed on the Internet at:
                   www.usbr.gov/lc/region/g4000/hourly/rivops.html



Last updated: 28-Aug-2015



Please contact the Water Operations Control Center via e-mail at bcoowaterops@usbr.gov or via phone at (702) 293-8373 for additional questions or information.