Whitmans Pond Dam Reservoir Report
Nearby: Iron Hill Dam Cushing Pond Dam
Last Updated: December 19, 2025
Whitmans Pond Dam, located in Weymouth, Massachusetts, is a concrete structure designed primarily for flood risk reduction along the Weymouth Back River.
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Summary
Completed in 1970, the dam stands at a height of 15.4 feet with a hydraulic height of 9.6 feet, providing a normal storage capacity of 550 acre-feet. The dam is owned by the local government and regulated by the Department of Conservation and Recreation, ensuring compliance with state permitting, inspection, and enforcement protocols.
With a hazard potential rated as high and a condition assessment deemed satisfactory during the last inspection in September 2017, Whitmans Pond Dam plays a crucial role in mitigating flooding risks in the area. The dam also serves recreational purposes, offering a surface area of 145 acres for public enjoyment. Despite its moderate risk assessment level, the dam's emergency action plan (EAP) status and risk management measures remain unspecified, calling for continued vigilance and preparedness in the face of potential emergencies.
As water resource and climate enthusiasts, understanding the structural specifications and operational details of Whitmans Pond Dam underscores its significance in safeguarding the local community from flooding events. With a moderate risk level and a satisfactory condition assessment, the dam's role in flood risk reduction and recreational activities highlights the intersection of infrastructure, environment, and public safety. Continuous monitoring, maintenance, and adherence to regulatory guidelines are essential to ensure the long-term effectiveness of Whitmans Pond Dam in protecting the surrounding areas from potential hazards.
Year Completed |
1970 |
Dam Length |
60 |
Dam Height |
15.4 |
River Or Stream |
WEYMOUTH BACK RIVER |
Primary Dam Type |
Concrete |
Surface Area |
145 |
Hydraulic Height |
9.6 |
Drainage Area |
12.5 |
Nid Storage |
1920 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Ponkapoag Camp of Appalachian Mountain Club
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Spang Camp Site
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Missionary Point
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YMCA Camp
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Camp Christina Entrance
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Whitmans Pond Dam
Commercial Street Weymouth