Pine Hill Reservoir Dam Reservoir Report

Last Updated: December 22, 2025

Located in Holden, Massachusetts, the Pine Hill Reservoir Dam serves as a vital structure for water supply in the region.


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Summary

Completed in 1924, this concrete gravity dam stands at a height of 70 feet, with a hydraulic height of 60 feet. With a storage capacity of 13,023 acre-feet, the reservoir covers a surface area of 0.53 square miles and has a drainage area of 6.7 square miles, providing essential water resources for the community.

Managed by the Department of Conservation and Recreation, the Pine Hill Reservoir Dam is regulated, permitted, inspected, and enforced by the state of Massachusetts. Despite its high hazard potential, the dam is currently assessed to be in fair condition, with the last inspection conducted in January 2017. The dam features an uncontrolled spillway type and is associated with the Asnebumskit Brook, highlighting its importance in managing water resources in the area.

For water resource and climate enthusiasts, the Pine Hill Reservoir Dam presents a fascinating example of infrastructure designed for water supply purposes. With its historical significance, structural features, and regulatory oversight, this concrete dam plays a crucial role in ensuring the availability of water for the community while also addressing potential risks and management measures to maintain its functionality and safety for years to come.

Year Completed

1924

Dam Length

840

Dam Height

70

River Or Stream

ASNEBUMSKIT BROOK

Primary Dam Type

Concrete

Surface Area

0.53

Hydraulic Height

60

Drainage Area

6.7

Nid Storage

13023

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

70
       
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.