Whitehall Upper Pond Dam Reservoir Report
Last Updated: December 15, 2025
Whitehall Upper Pond Dam, located in Hopkinton, Massachusetts, is a state-regulated structure owned by the Department of Conservation and Recreation.
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Summary
This masonry dam on Whitehall Brook serves primarily as a Fish and Wildlife Pond for recreational purposes. With a height of 10 feet and a hydraulic height of 6.5 feet, the dam has a storage capacity of 13 acre-feet and a surface area of 1.8 acres.
Despite its significant hazard potential and poor condition assessment, the Whitehall Upper Pond Dam is inspected every 5 years to ensure its safety and functionality. The dam features an uncontrolled spillway type and has a moderate risk assessment rating. In case of emergencies, the dam lacks an Emergency Action Plan, which could potentially pose challenges in managing risk and ensuring public safety in the event of a breach.
Overall, Whitehall Upper Pond Dam plays a crucial role in supporting the local ecosystem and providing recreational opportunities. However, ongoing maintenance and a comprehensive Emergency Action Plan are crucial to mitigate risks and ensure the long-term safety and functionality of this important water resource structure.
Dam Length |
175 |
Dam Height |
10 |
River Or Stream |
WHITEHALL BROOK |
Primary Dam Type |
Masonry |
Surface Area |
1.8 |
Hydraulic Height |
6.5 |
Drainage Area |
4.7 |
Nid Storage |
13 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
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.
Whitehall Upper Pond Dam
Wood Street 291-299, Hopkinton