WSP01897

• File Number: 8270.100
• Description: Colorado River Basin Water Quality/Salinity -- Misc Water Quality
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1977
• Author: USDOI
• Title: Quality of Water - Colorado River Basin - Progress Report No. 8 - January 1977
• Water Supply Pro - Doc Type: Report/Study

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EVALUATIONS OF EXISTING SALINITY CO~~ITIONS

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to the San Juan-Chama Project. It also helps regulate the flows of the
Colorado River at Lees Ferry. Other purposes include recreation, sediment
control, fish and wildlife propagation, and flood control. Storage began
July 1, 1962, and the effect on quality is recorded at the Archuleta
station below Navajo Dam.

S. Glen Canvon

The Glen Canyon Dam is located on the Colorado River in Arizona,
4 miles south of the Utah-Arizona boundary and 16 miles upstream from
Lees Ferry. The bulk of the reservoir lies in Utah. At a normal water
surface elevation of 3,700 feet m.s.l., Lake Powell extends 186 river
miles up the Colorado River and 71 miles up from the mouth of the San
Juan River. River mile 71 on the San Juan River is 133 river miles from
Glen Canyon Dam. This 27,000,000 acre-foot (20,876,000 active) reservoir
regulates the flow of the river for compact delivery purposes and for
power generation and thus permits exchanges for upstream consumptive use
of the water. Fish and wildlife conservation and recreation are also
of major significance. Storage in Lake Powell commenced March 31, 1963.

6. Hoover

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Lake Mead is formed behind Hoover Dam and is used for the storage of
water for flood control, irrigation, municipal water supplies, and power
generation. Lake Mead is the only reservoir on the Colorado River that
has a specified space allocated exclusively for mainstream flood control.
The present total capacity is about 28,000,000 acre-feet.

7. Davis

Lake Mohave is formed behind Davis Dam, a zoned earthfill type, and is
used for power generation, regulation for irrigation demands, and to aid
in satisfying the requirements of the Treaty of 1944 with ~exico. It has
a capacity of 1,800,000 acre-feet.

8. Parker

Lake Havasu is formed behind the concrete arch Parker Dam and is used
for flood control, power generation, regulation for irrigation demands, and
as a pool from which water is pumped by the Metropolitan Water District
of Southern California (~TI) to the Colorado River Aqueduct. The Central
Arizona Project will also pump from this reservoir. It has a capacity of
619,000 acre-feet.

9. Senator Wash

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Senator Wash Dam forms an offstream reservoir and is located 3 miles
upstream of Imperial Dam. The reservoir is used for pump-back storage,
power generation, and regulation for downstream users. This reservoir

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