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Hawk Lake Dam
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Hawk Lake Dam Share
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Overview Share
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Afton, Iowa
Water Supply
Privately owned
Built in 1967

Hawk Lake Dam is an earth dam built on the Tr-Twelve Mile Creek River and is located in Afton, Iowa. It was built in 1967 for the purpose of water supply.

The dam is privately owned by Central Iowa Power Cooperative.

Location
Hawk Lake Dam
Afton, Iowa, U.S.
Dam type
Earth
Dam type
Water supply
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Central Iowa Power Cooperative
Owner
Private

Hawk Lake Dam is privately owned by Central Iowa Power Cooperative.

Construction Share
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1967
Completed
Stanley Consultants
Dam designer
Tr-Twelve Mile Creek River
River built on
Hawk Lake Dam was built in 1967.
Metrics Share
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Summary
Dam length 836 feet
Dam height 18 feet
Max storage 190 acre feet
Normal storage 122 acre feet
Surface area 18 acres
Drainage area 1 square miles
836 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.

18 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.

190 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.

122 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.

18 acres
Surface area

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

1 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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Low
Downstream potential hazard

Dams assigned the low hazard potential classification are those where failure or misoperation results in no probable loss of human life and low economic and/or environ-mental losses. Losses are principally limited to the owner’s property.

Not required
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.

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Distance to nearest town (miles) 10
Latitude 41
Longitude -94
NID ID (National ID) IA01091

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