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Plane Nine Dam
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Plane Nine Dam Share
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Overview Share
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Pennsylvania
Water Supply
Local government owned
Built in 1907

Plane Nine Dam is an earth dam built on the Blair Gap Run River and is located in Pennsylvania. It was built in 1907 for the purpose of water supply.

The dam is owned by the local government.

Location
Plane Nine Dam
Pennsylvania, U.S.
Dam type
Earth
Dam type
Water supply
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Altoona Water Authority
Owner
Local government

Plane Nine Dam is owned by the local government.

Construction Share
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1907
Completed
Blair Gap Run River
River built on
Plane Nine Dam was built in 1907.
Metrics Share
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Summary
Dam length 735 feet
Dam height 51 feet
Max storage 561 acre feet
Normal storage 337 acre feet
Surface area 23 acres
Drainage area 13 square miles
735 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.

51 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.

561 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.

337 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.

23 acres
Surface area

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

13 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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High
Downstream potential hazard

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Has 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.

8/17/2017
Most recent inspection date

Inspections are every 1 ear.

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Latitude 40
Longitude -78
NID ID (National ID) PA00520

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