Mill Pond Dam Reservoir Report
Nearby: Fiske Mill Pond Dam Hopedale Pond Dam
Last Updated: December 13, 2025
Mill Pond Dam, located in Hopedale, Massachusetts, stands as a crucial structure on the Mill River, serving various purposes beyond flood control and water storage.
°F
°F
mph
Wind
%
Humidity
Summary
This private-owned dam, regulated by the Department of Conservation and Recreation, stands at a height of 12.5 feet and has a hydraulic height of 8.5 feet, contributing to a normal storage of 120 acre-feet and a maximum capacity of 210 acre-feet. However, despite its significant hazard potential and poor condition assessment, the dam has not been inspected since June 2013, highlighting the need for regular maintenance and risk management measures.
The earth-type dam, with a buttress core design, spans a length of 145 feet and covers a surface area of 21.2 acres, serving as a vital resource for the surrounding community. With a drainage area of 6.63 square miles, the dam plays a crucial role in managing water resources and protecting the local ecosystem. The significant risk associated with the dam warrants immediate attention and the implementation of a comprehensive emergency action plan to ensure the safety of downstream communities and the preservation of the Mill River watershed.
In light of its moderate risk assessment, Mill Pond Dam underscores the importance of proactive monitoring and maintenance to mitigate potential hazards and safeguard water resources in the region. As climate change continues to impact water availability and extreme weather events, the proper management of dams like Mill Pond Dam is essential for ensuring the resilience of water infrastructure and the sustainability of ecosystems. Collaboration between stakeholders, regular inspections, and the implementation of risk management measures are critical in addressing the challenges posed by aging infrastructure and evolving climate conditions.
Dam Length |
145 |
Dam Height |
12.5 |
River Or Stream |
MILL RIVER |
Primary Dam Type |
Earth |
Surface Area |
21.2 |
Hydraulic Height |
8.5 |
Drainage Area |
6.63 |
Nid Storage |
210 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
West River Below West Hill Dam
|
1cfs |
Blackstone River At Northbridge
|
1240cfs |
Charles River At Medway
|
61cfs |
Quinsigamond River At North Grafton
|
25cfs |
Blackstone River
|
94cfs |
Blackstone River At Woonsocket
|
449cfs |
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.
Mill Pond Dam
West Main Street 209, Hopkinton