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Griggs Lake Dam North
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Overview Share
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Unadilla, Georgia
Irrigation
Privately owned
Built in 1972

Griggs Lake Dam North is an earth dam built on the Unknown River and is located in Unadilla, Georgia. It was built in 1972 for the purpose of irrigation.

The dam is privately owned by Griggs, C. W. and George.

Location
Griggs Lake Dam North
Unadilla, Georgia, U.S.
Dam type
Earth
Dam type
Irrigation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Griggs, C. W. and George
Owner
Private

Griggs Lake Dam North is privately owned by Griggs, C. W. and George.

Construction Share
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1972
Completed
USDA NRCS
Dam designer
Unknown River
River built on
Griggs Lake Dam North was built in 1972.
Metrics Share
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Summary
Dam length 600 feet
Dam height 20 feet
Hydraulic height 19 feet
Max storage 103 acre feet
Normal storage 41 acre feet
Surface area 7 acres
Drainage area 197 square miles
600 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.

20 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.

19 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.

103 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.

41 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.

7 acres
Surface area

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

197 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.

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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.

3/14/2017
Most recent inspection date

Inspections are every 5 years.

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Latitude 32
Longitude -83
NID ID (National ID) GA02644

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