Lower Colorado River Operations Schedule

Note: You may now view this report with near real-time data at this link. The link is updated hourly with our most recent operations data and operational projections.


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)
       -----       -----     -----     -----     -----     -----      -----
       Sep 17       9600     447.9     13800     640.0     12600      1078.6
       Sep 18       9700     447.9     13900     639.9     12600      1078.6
       Sep 19       9000     447.9     13900     639.7     12600      1078.6
       Sep 20       7000     448.2     13900     639.6     12600      1078.6
       Sep 21       9500     448.2     13900     639.5     12600      1078.5
       Sep 22       9600     448.2     13900     639.3     12600      1078.5
       Sep 23       9400     448.2     13900     639.1     10800      1078.5
       
       Average      9100               13900               12300
       
       Sep 24 to
       Sep 30       9200     448.5     13900     638.0     12300      1078.4
       
       Oct  1 to
       Oct  7       8800     448.7     13000     634.0      5800      1079.2


Current Lake Powell storage is 11,289 thousand acre-feet (KAF) (46 percent of capacity).
Lake Mead storage is 9,900 KAF (38 percent of capacity).  Total system storage is 28,501
KAF (48 percent of capacity).  Lake Powell elevation is 3,595.10 feet.

The observed April-July unregulated inflow for the Colorado River is 2.60 million acre-feet
or 36 percent of average.

Yesterday, the average Colorado River flows were 608 cfs near the Yuma Fourth Avenue
Bridge and 1,321 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 17-Sep-2018 are expected to be 1,348 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: 14-September-2018


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.