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The Tarn Dam
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The Tarn Dam Share
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Overview Share
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Bar Harbor, Maine
Recreation
Federal ownership
Built in 1900

The Tarn Dam is built on the Cromwell Brook River and is located in Bar Harbor, Maine. It was built in 1900 for the purpose of recreation.

The dam is under federal ownership and is owned by the Acadia National Park. It is also known as The Tarn.

Location
The Tarn Dam
Bar Harbor, Maine, U.S.
Dam type
Other
Dam type
Recreation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Acadia National Park
Owner
Federal

The Tarn Dam is under federal ownership and is owned by the Acadia National Park.

Construction Share
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1900
Completed
Cromwell Brook River
River built on
The Tarn Dam was built in 1900.
Metrics Share
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Summary
Dam length 19 feet
Dam height 7 feet
Structural height 7 feet
Hydraulic height 6 feet
Max storage 184 acre feet
Normal storage 165 acre feet
Surface area 20 acres
19 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.

7 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.

7 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.

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.

184 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.

165 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.

20 acres
Surface area

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

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.

10/6/2010
Most recent inspection date

Inspections are every 12 years.

About Share
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Also known as The Tarn
Latitude 44
Longitude -68
NID ID (National ID) ME00705

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