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Spectacle Pond Dam
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Spectacle Pond Dam Share Share

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Groton, New Hampshire
Recreation
Privately owned
Built in 1915

Spectacle Pond Dam is built on the TR Cockermouth River and is located in Groton, New Hampshire. It was built in 1915 and modified in 2011 for the purpose of recreation.

The dam is privately owned by Spectacle Pond Association.

Location
Spectacle Pond Dam
Groton, New Hampshire, U.S.
Dam type
Other
Dam type
Recreation
Purpose
Unknown
Foundation type
Unknown
Core type
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Ownership Share Share
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Spectacle Pond Association
Owner
Private

Spectacle Pond Dam is privately owned by Spectacle Pond Association.

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Construction Share Share
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1915
Completed
2011
Modified
TR Cockermouth River
River built on
Spectacle Pond Dam was built in 1915 and modified in 2011.
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Metrics Share Share
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Summary
Dam length 46 feet
Dam height 7 feet
Max discharge 476 cubic feet per second
Max storage 140 acre feet
Normal storage 115 acre feet
Surface area 58 acres
Drainage area 0 square miles
46 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.

476 cubic feet per second
Max discharge

Number of cubic feet per second the spillway is capable of discharging when the reservoir is at its maximum designed water surface elevation.

140 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.

58 acres
Surface area

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

0 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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Safety Share 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.

10/12/2017
Most recent inspection date

Inspections are every 2 years.

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About Share Share
Latitude 43
Longitude -71
NID ID (National ID) NH00043
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