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Silver Lake East Dam
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Silver Lake East Dam Share
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Overview Share
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Opportunity, Montana
Irrigation
Local government owned
Built in 1918

Silver Lake East Dam is an earth dam built on the Tr-Storm Lake Creek River and is located in Opportunity, Montana. It was built in 1918 for the purpose of irrigation.

The dam is owned by the local government.

Location
Silver Lake East Dam
Opportunity, Montana, U.S.
Dam type
Earth
Dam type
Irrigation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Butte-Silver Bow
Owner
Local government

Silver Lake East Dam is owned by the local government.

Construction Share
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1918
Completed
Tr-Storm Lake Creek River
River built on
Silver Lake East Dam was built in 1918.
Metrics Share
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Summary
Dam length 1,012 feet
Dam height 11 feet
Hydraulic height 6 feet
Max discharge 350 cubic feet per second
Max storage 17,920 acre feet
Normal storage 17,570 acre feet
Surface area 340 acres
Drainage area 2 square miles
1,012 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.

11 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.

6 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.

350 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.

17,920 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.

17,570 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.

340 acres
Surface area

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

2 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.

No 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.

6/13/1995
Most recent inspection date

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Distance to nearest town (miles) 11
Latitude 46
Longitude -113
NID ID (National ID) MT03752

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