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Copan Dam
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Copan Dam Share
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Overview Share
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Dewey, Oklahoma
Federal ownership
Built in 1983

Copan Dam is built on the Little Caney River and is located in Dewey, Oklahoma. It was built in 1983 .

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

Location
Copan Dam
Dewey, Oklahoma, U.S.
Dam type
Other
Dam type
Other
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Ceswt
Owner
Federal

Copan Dam is under federal ownership and is owned by the Ceswt.

Construction Share
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1983
Completed
Ceswt
Dam designer
Little Caney River
River built on
Copan Dam was built in 1983.
Metrics Share
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Summary
Dam length 7,730 feet
Dam height 73 feet
Structural height 73 feet
Hydraulic height 67 feet
Max discharge 199,070 cubic feet per second
Max storage 338,000 acre feet
Normal storage 43,400 acre feet
Surface area 4,850 acres
Drainage area 505 square miles
7,730 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.

73 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.

73 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.

67 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.

199,070 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.

338,000 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.

43,400 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.

4,850 acres
Surface area

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

505 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.

Safety Share
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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.

6/7/2016
Most recent inspection date

Inspections are every 5 years.

About Share
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Also known as Copan Lake
Distance to nearest town (miles) 5
Latitude 36
Longitude -95
NID ID (National ID) OK21489

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