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Coyote Valley Dam
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Overview Share
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Ukiah, California
Federal ownership
Built in 1959

Coyote Valley Dam is an earth dam built on the East Fork Russian River and is located in Ukiah, California. It was built in 1959 .

The dam is under federal ownership and is owned by the Cespn. It is also known as Lake Mendocino.

Location
Coyote Valley Dam
Ukiah, California, U.S.
Dam type
Earth
Dam type
Other
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Cespn
Owner
Federal

Coyote Valley Dam is under federal ownership and is owned by the Cespn.

Construction Share
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1959
Completed
Cespn
Dam designer
East Fork Russian River
River built on
Coyote Valley Dam was built in 1959.
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Summary
Dam length 3,525 feet
Dam height 164 feet
Structural height 180 feet
Hydraulic height 161 feet
Max discharge 35,800 cubic feet per second
Max storage 155,500 acre feet
Normal storage 74,500 acre feet
Surface area 1,740 acres
Drainage area 105 square miles
3,525 feet
Dam length

Length of the dam is defined as the length along the top of the dam. This also includes the spillway, powerplant, navigation lock, fish pass, etc., where these form part of the length of the dam. If detached from the dam, these structures should not be included.

164 feet
Dam height

Height of the dam is defined as the vertical distance between the lowest point on the crest of the dam and the lowest point in the original streambed.

180 feet
Structural height

Structural height of the dam is defined as the vertical distance from the lowest point of the excavated foundation to the top of the dam. Top of dam refers to the parapet wall and not the crest.

161 feet
Hydraulic height

Hydraulic height of the dam is defined as the vertical difference between the maximum design water level and the lowest point in the original streambed.

35,800 cubic feet per second
Max discharge

Number of cubic feet per second the spillway is capable of discharging when the reservoir is at its maximum designed water surface elevation.

155,500 acre feet
Max storage

Maximum storage is defined as the total storage space in a reservoir below the maximum attainable water surface elevation, including any surcharge storage.

74,500 acre feet
Normal storage

Normal storage is defined as the total storage space in a reservoir below the normal retention level, including dead and inactive storage and excluding any flood control or surcharge storage. For normally dry flood control dams, the normal storage will be a zero value.

1,740 acres
Surface area

Surface area, in acres, of the impoundment at its normal retention level.

105 square miles
Drainage area

Drainage area of the dam, in square miles, which is defined as the area that drains to a particular point (in this case, the dam) on a river or stream.

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High
Downstream potential hazard

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Has emergency action plan
Emergency action plan

An emergency action plan is defined as a plan of action to be taken to reduce the potential for property damage and loss of life in an area affected by a dam failure or large flood.

8/9/2017
Most recent inspection date

Inspections are every 5 years.

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Also known as Lake Mendocino
Distance to nearest town (miles) 2
Latitude 39
Longitude -123
NID ID (National ID) CA10201

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