Beaver Brook Dam Reservoir Report

Last Updated: December 17, 2025

Beaver Brook Dam, located in Middlesex County, Massachusetts, is a privately owned structure regulated by the Department of Conservation and Recreation.


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Summary

This masonry dam on Beaver Brook serves a primary purpose that is classified as "Other," with a design that includes gravity and masonry elements. The dam stands at a height of 18.1 feet and has a hydraulic height of 21 feet, providing a storage capacity of 56 acre-feet for the surrounding area.

Despite its significant hazard potential and poor condition assessment, Beaver Brook Dam has a moderate risk rating and undergoes inspections every five years. The dam's emergency action plan status and risk management measures are currently unspecified, indicating potential areas for improvement in terms of disaster preparedness and mitigation. With its location in Dracut and its vital role in managing water resources in the region, continued monitoring and maintenance of Beaver Brook Dam are essential for ensuring the safety and stability of the structure.

Water resource and climate enthusiasts interested in Beaver Brook Dam can appreciate its unique design features and the challenges associated with its regulation and maintenance. As a key infrastructure element on Beaver Brook, this dam plays a crucial role in managing water flow and storage in the area. Ongoing efforts to assess and address the dam's condition and emergency preparedness will be crucial in safeguarding the surrounding community and ecosystem from potential risks and hazards.

Dam Length

97

Dam Height

18.1

River Or Stream

BEAVER BROOK

Primary Dam Type

Masonry

Surface Area

10.1

Hydraulic Height

21

Drainage Area

93.5

Nid Storage

56

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

21
       
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.