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Sandy Hollow Dam
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Sandy Hollow, New York
Privately owned
Built in 1907

Sandy Hollow Dam is built on the Indian River and is located in Sandy Hollow, New York. It was built in 1907 and modified in 1999M .

The dam is privately owned by Sandy Hollow Power Company, Inc.

Location
Sandy Hollow Dam
Sandy Hollow, New York, U.S.
Dam type
Other
Dam type
Other
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Sandy Hollow Power Company, Inc.
Owner
Private

Sandy Hollow Dam is privately owned by Sandy Hollow Power Company, Inc..

Construction Share
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1907
Completed
1999M
Modified
Indian River
River built on
Sandy Hollow Dam was built in 1907 and modified in 1999M.
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Summary
Dam length 106 feet
Dam height 20 feet
Structural height 21 feet
Hydraulic height 16 feet
Max storage 14 acre feet
Normal storage 5 acre feet
Surface area 1 acres
Drainage area 233 square miles
106 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.

21 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.

16 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.

14 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.

5 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.

1 acres
Surface area

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

233 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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Significant
Downstream potential hazard

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be located in areas with population and significant infrastructure.

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.

8/8/2017
Most recent inspection date

Inspections are every 1 ear.

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Latitude 44
Longitude -75
NID ID (National ID) NY12020

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