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Mashapaug Pond Dam #1 South
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Mashapaug Pond Dam #1 South Share
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Overview Share
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Union, Connecticut
Recreation
State owned
Built in 1900

Mashapaug Pond Dam #1 South is a concrete dam built on the Bigelow Brook River and is located in Union, Connecticut. It was built in 1900 for the purpose of recreation.

The state-owned dam is owned by the Connecticut Deep. It is also known as Mashapaug Pond.

Location
Mashapaug Pond Dam #1 South
Union, Connecticut, U.S.
Dam type
Concrete
Dam type
Recreation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Connecticut Deep
Owner
State

The state-owned dam is owned by the Connecticut Deep.

Construction Share
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1900
Completed
Bigelow Brook River
River built on
Mashapaug Pond Dam #1 South was built in 1900.
Metrics Share
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Summary
Dam length 60 feet
Dam height 6 feet
Max discharge 200 cubic feet per second
Max storage 5,860 acre feet
Normal storage 5,300 acre feet
Surface area 273 acres
Drainage area 5 square miles
60 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.

6 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.

200 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.

5,860 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.

5,300 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.

273 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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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.

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.

5/27/2015
Most recent inspection date

Inspections are every 7 years.

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Also known as Mashapaug Pond
Distance to nearest town (miles) 1
Latitude 42
Longitude -72
NID ID (National ID) CT00640

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