Hales Pond Dam Reservoir Report

Last Updated: December 8, 2025

Hales Pond Dam, located in Wrentham, Massachusetts, is a masonry dam along the Bungay Brook that serves as a recreational site.


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Summary

Managed by the local government, the dam is regulated by the Department of Conservation and Recreation. With a height of 20.25 feet and a hydraulic height of 14.5 feet, the dam has a low hazard potential but is in poor condition according to a 2015 assessment.

Although the dam has a normal storage capacity of 42.37 acre-feet and a maximum storage of 150.05 acre-feet, it lacks spillway controls. The risk assessment for Hales Pond Dam is moderate, with a risk level of 3 out of 5. Despite its condition assessment and risk level, the dam does not have an emergency action plan in place. With its significance for recreation in the area, stakeholders and water resource enthusiasts may want to monitor the maintenance and safety measures of Hales Pond Dam to ensure its continued functionality and safety.

Dam Height

20.25

River Or Stream

BUNGAY BROOK

Primary Dam Type

Masonry

Surface Area

3.94

Hydraulic Height

14.5

Drainage Area

2.48

Nid Storage

150.05

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

20
       
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.