Greenwater Pond Dam Reservoir Report

Last Updated: December 7, 2025

Greenwater Pond Dam, located in Berkshire, Massachusetts, was completed in 1944 and serves as a vital resource for fish and wildlife preservation in the area.


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Summary

Managed by the Department of Conservation and Recreation, this earth dam stands at a height of 18 feet and has a maximum storage capacity of 2350 acre-feet. With a primary purpose of providing a habitat for fish and wildlife, the dam also offers recreational opportunities for visitors to enjoy.

The dam's condition has been assessed as fair, with a significant hazard potential, prompting inspections every five years to ensure its safety. Despite its age, the Greenwater Pond Dam continues to play a crucial role in maintaining the ecological balance of the region. Its strategic location on Greenwater Brook contributes to the conservation efforts in the area, making it a key asset for water resource and climate enthusiasts to appreciate and protect for future generations.

As a state-regulated structure with a moderate risk assessment, the Greenwater Pond Dam stands as a testament to the importance of responsible dam management and maintenance. With its controlled spillway and significant storage capacity, this dam remains a valuable asset for both wildlife preservation and recreational activities. Its strategic location in the town of Becket further enhances its role in the local ecosystem, making it a focal point for environmental enthusiasts and conservationists to monitor and support.

Year Completed

1944

Dam Length

320

Dam Height

18

River Or Stream

GREENWATER BROOK

Primary Dam Type

Earth

Surface Area

88

Hydraulic Height

12

Drainage Area

1.7

Nid Storage

2350

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

18
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
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 in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.