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Granite Lake Dam
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Granite Lake Dam Share
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Nelson, New Hampshire
Recreation
Local government owned
Built in 1932

Granite Lake Dam is an earth dam built on the Granite Lake Brook River and is located in Nelson, New Hampshire. It was built in 1932 for the purpose of recreation.

The dam is owned by the local government.

Location
Granite Lake Dam
Nelson, New Hampshire, U.S.
Dam type
Earth
Dam type
Recreation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Granite Lake Village District
Owner
Local government

Granite Lake Dam is owned by the local government.

Construction Share
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1932
Completed
Granite Lake Brook River
River built on
Granite Lake Dam was built in 1932.
Metrics Share
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Summary
Dam length 90 feet
Dam height 11 feet
Max storage 990 acre feet
Normal storage 765 acre feet
Surface area 211 acres
Drainage area 4 square miles
90 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.

11 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.

990 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.

765 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.

211 acres
Surface area

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

4 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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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.

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.

5/24/2017
Most recent inspection date

Inspections are every 2 years.

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Latitude 43
Longitude -72
NID ID (National ID) NH00336

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