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Rock Creek Lake Dam
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Rock Creek Lake Dam Share
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Garrison, Montana
Water Supply
Privately owned
Built in 1960

Rock Creek Lake Dam is an earth dam built on the Rock Creek River and is located in Garrison, Montana. It was built in 1960 for the purpose of water supply.

The dam is privately owned by Franklin Inc.

Location
Rock Creek Lake Dam
Garrison, Montana, U.S.
Dam type
Earth
Dam type
Water supply
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Franklin Inc
Owner
Private

Rock Creek Lake Dam is privately owned by Franklin Inc.

Construction Share
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1960
Completed
Rock Creek River
River built on
Rock Creek Lake Dam was built in 1960.
Metrics Share
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Summary
Dam length 320 feet
Dam height 30 feet
Hydraulic height 30 feet
Max storage 2,552 acre feet
Normal storage 1,477 acre feet
320 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.

30 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.

30 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.

2,552 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.

1,477 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.

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Significant
Downstream potential hazard

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be located in areas with population and significant infrastructure.

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) 8
Latitude 46
Longitude -112
NID ID (National ID) MT03747

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