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Gillan Pond Dam
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Gillan Pond Dam Share
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Gilmanton, New Hampshire
Recreation
Privately owned
Built in 1971

Gillan Pond Dam is an earth dam built on the Nelson Brook River and is located in Gilmanton, New Hampshire. It was built in 1971 for the purpose of recreation.

The dam is privately owned by MR Ernest Gillan.

Location
Gillan Pond Dam
Gilmanton, New Hampshire, U.S.
Dam type
Earth
Dam type
Recreation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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MR Ernest Gillan
Owner
Private

Gillan Pond Dam is privately owned by MR Ernest Gillan.

Construction Share
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1971
Completed
Nelson Brook River
River built on
Gillan Pond Dam was built in 1971.
Metrics Share
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Summary
Dam length 300 feet
Dam height 10 feet
Max storage 333 acre feet
Normal storage 33 acre feet
Surface area 40 acres
Drainage area 5 square miles
300 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.

10 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.

333 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.

33 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.

40 acres
Surface area

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

5 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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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.

9/28/2017
Most recent inspection date

Inspections are every 6 years.

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Latitude 43
Longitude -71
NID ID (National ID) NH00526

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