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John Long Dam
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Overview Share
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South Carolina
Irrigation
Privately owned
Built in 1990

John Long Dam is an earth dam built on the Tr-Big Beaverdam Creek River and is located in South Carolina. It was built in 1990 for the purpose of irrigation.

The dam is privately owned by John F. Long.

Location
John Long Dam
South Carolina, U.S.
Dam type
Earth
Dam type
Irrigation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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John F. Long
Owner
Private

John Long Dam is privately owned by John F. Long.

Construction Share
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1990
Completed
Tr-Big Beaverdam Creek River
River built on
John Long Dam was built in 1990.
Metrics Share
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Summary
Dam length 475 feet
Dam height 29 feet
Max storage 175 acre feet
Normal storage 115 acre feet
Surface area 12 acres
475 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.

29 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.

175 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.

115 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.

12 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.

10/4/2017
Most recent inspection date

Inspections are every 5 years.

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Latitude 34
Longitude -81
NID ID (National ID) SC02551

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