WSP10457

• File Number: 8282.600.10
• Description: Colorado River Operating Annual Reports
• Basin: Colorado Mainstem
• Date: 1/1/1989
• Author: USDOI/BOR
• Title: Operation of the Colorado River Basin 1989 Projected Operations 1990
• Water Supply Pro - Doc Type: Publication

LAKE HA V ASU
(COLORADO RIVER)

Water Year 1989

At the beginning of water year 1989, the water level of Lake
Havasu, impounded by Parker. Dam. was at an elevation of
447 feet, with an active storage of 560,000 acre-feet. During
the winter the reservoir was drawn down to an elevation of
445 feet to provide vacant space for runoff frnm the drainage
area between Davis and Parker dams, The water level was
then raised to an elevation of 450 feet near the middle of May,
with an active storage of about 624,000 acre-feet, At tbe end
of the water year, Lake Havasu was at an elevation of 447 feet
with an active storage of 563,000 acre-feet.

During the water year, approximately 7,030,000 acre-feet
were released through Parker Dam powerplant. 10 addition

ACTUAL RELEASES

'"' 1989

1000 (F.
..

..

to

NDJFMAMJJASO

to tbe releases from Parker Dam, approximately
, 1,198,000 acre-feet were diverted from Lake Havasu by
MWD, Diversions from Lake Havasu for the CAP were
747,000 acre-feet during the water year.

Space in tbe top 10 feet of Lake Havasu (about
180,000 acre-feet) is reserved by the United States for tbe
control of floods and other uses, including river regulation,
Recently, only about the top 4 feet, or 77,000 acre-feet of
space, have been required for tbis purpose since construction
of the Alamo Reservoir on the Bill Williams River has
provided additional flood control.

LAKE HAVASU

Reservoir

Acre-feet

Elevation, feet

Maximum Storage
Rated Head
Minimum Power
Surface Area, full
Reservoir Length, full

619,400
619,400
439,400

450
450
440
20,400 Acres
35 Miles

Powecplant

Number of Units
Total Capacity

4
120,000 KW

19