Upper Sackett Reservoir Dam Reservoir Report

Last Updated: December 8, 2025

The Upper Sackett Reservoir Dam in Hinsdale, Massachusetts, stands as a vital structure for water supply in the region.


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Summary

Completed in 1947, this concrete dam boasts a height of 76 feet and a hydraulic height of 70 feet, serving to store and manage water resources from the Sackett Brook. The dam's primary purpose is water supply, with a storage capacity of 605 acre-feet and a normal storage level of 475 acre-feet, covering a surface area of 20.4 acres.

Managed by the Department of Conservation and Recreation, the Upper Sackett Reservoir Dam is state-regulated and subject to regular inspections to ensure its structural integrity and operational efficiency. Despite being categorized as a high hazard potential structure, the dam has been assessed as satisfactory in condition, with a moderate risk level of 3. Emergency action plans and risk management measures are in place, though specifics on their implementation remain undisclosed. With Congressman Richard E. Neal representing the area, the dam plays a crucial role in sustaining water resources and mitigating climate-related risks in Berkshire County.

Enthusiasts of water resources and climate resilience will find the Upper Sackett Reservoir Dam an intriguing case study of infrastructure designed to meet the demands of water supply in a changing environment. With its historical significance, engineering complexity, and regulatory oversight, the dam serves as a focal point for understanding the challenges and opportunities in managing water resources in Massachusetts. The collaborative efforts between local government, state agencies, and federal representatives underscore the importance of strategic planning and risk management in safeguarding critical infrastructure for future generations.

Year Completed

1947

Dam Length

660

Dam Height

76

River Or Stream

SACKETT BROOK

Primary Dam Type

Concrete

Surface Area

20.4

Hydraulic Height

70

Drainage Area

1

Nid Storage

605

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

76
       
Seasonal Comparison

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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.