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Unionville Pond Dam
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Unionville Pond Dam Share
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Massachusetts
State owned
Built in 1909

Unionville Pond Dam is an earth dam built on the Chaffins Brook River and is located in Massachusetts. It was built in 1909 .

The state-owned dam is owned by the DCR - Dept. of Conservation & Recreation.

Location
Unionville Pond Dam
Massachusetts, U.S.
Dam type
Earth
Dam type
Other
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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DCR - Dept. of Conservation & Recreation
Owner
State

The state-owned dam is owned by the DCR - Dept. of Conservation & Recreation.

Construction Share
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1909
Completed
Chaffins Brook River
River built on
Unionville Pond Dam was built in 1909.
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Summary
Dam length 150 feet
Dam height 21 feet
Hydraulic height 12 feet
Max storage 380 acre feet
Normal storage 100 acre feet
Surface area 19 acres
Drainage area 6 square miles
150 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.

21 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.

12 feet
Hydraulic height

Hydraulic height of the dam is defined as the vertical difference between the maximum design water level and the lowest point in the original streambed.

380 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.

100 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.

19 acres
Surface area

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

6 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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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.

6/30/2017
Most recent inspection date

Inspections are every 5 years.

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Latitude 42
Longitude -71
NID ID (National ID) MA00620

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