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Mothershead, R. Dam
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Overview Share
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Circle, Montana
Irrigation
Privately owned
Built in 1960

Mothershead, R. Dam is an earth dam built on the DRY Ash Creek River and is located in Circle, Montana. It was built in 1960 for the purpose of irrigation.

The dam is privately owned by P. Mothershead, Robert C. Inc.

Location
Mothershead, R. Dam
Circle, Montana, U.S.
Dam type
Earth
Dam type
Irrigation
Purpose
Unknown
Foundation type
Unknown
Core type
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P. Mothershead, Robert C. Inc
Owner
Private

Mothershead, R. Dam is privately owned by P. Mothershead, Robert C. Inc.

Construction Share
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1960
Completed
USDA NRCS
Dam designer
DRY Ash Creek River
River built on
Mothershead, R. Dam was built in 1960.
Metrics Share
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Summary
Dam length 300 feet
Dam height 25 feet
Hydraulic height 25 feet
Max discharge 3,000 cubic feet per second
Max storage 155 acre feet
Normal storage 79 acre feet
Drainage area 1 square miles
300 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.

25 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.

25 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.

3,000 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 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.

79 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 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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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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Latitude 47
Longitude -105
NID ID (National ID) MT01279

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