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Overflow Weir Dam
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Overflow Weir Dam Share
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New Jersey
Water Supply
State owned
Built in 1928

Overflow Weir Dam is a concrete dam built on the Wanaque River and is located in New Jersey. It was built in 1928 for the purpose of water supply.

The state-owned dam is owned by the North Jersey District Water Supply Authority.

Location
Overflow Weir Dam
New Jersey, U.S.
Dam type
Concrete
Dam type
Water supply
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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North Jersey District Water Supply Authority
Owner
State

The state-owned dam is owned by the North Jersey District Water Supply Authority.

Construction Share
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1928
Completed
Wanaque River
River built on
Overflow Weir Dam was built in 1928.
Metrics Share
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Summary
Dam length 552 feet
Dam height 30 feet
Normal storage 29,000 acre feet
Surface area 2,400 acres
Drainage area 90 square miles
552 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.

30 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.

29,000 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.

2,400 acres
Surface area

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

90 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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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.

10/11/2016
Most recent inspection date

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Latitude 41
Longitude -74
NID ID (National ID) NJ00214

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