Stony Brook Pond Dam Reservoir Report
Nearby: Nemasket Park Dam Woods Pond Dam
Last Updated: December 21, 2025
Stony Brook Pond Dam, located in Middleborough, Massachusetts, is a significant earth dam with a primary purpose of recreation.
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Summary
Completed in 2010, this dam stands at a height of 9.9 feet with a hydraulic height of 7.3 feet, providing a storage capacity of 90.3 acre-feet. The dam, situated on a NEMASKET RIVER TRIBUTARY, has a controlled spillway type and a surface area of 13.7 acres.
Despite its recreational significance, Stony Brook Pond Dam poses a significant hazard potential with a poor condition assessment, indicating the need for attention and maintenance. The risk assessment for this dam is very high, highlighting the importance of regular inspections and risk management measures. The dam is regulated by the DEPARTMENT OF CONSERVATION AND RECREATION, with state permitting, inspection, and enforcement in place to ensure public safety and environmental protection.
As a site of interest for water resource and climate enthusiasts, Stony Brook Pond Dam serves as a reminder of the delicate balance between human recreation and the need for responsible dam management. With its location in a picturesque natural setting, this dam presents both opportunities for enjoyment and challenges for sustainable maintenance practices in the face of climate change and increasing risk factors.
Year Completed |
2010 |
Dam Length |
140 |
Dam Height |
9.9 |
River Or Stream |
NEMASKET RIVER TRIBUTARY |
Primary Dam Type |
Earth |
Surface Area |
13.7 |
Hydraulic Height |
7.3 |
Drainage Area |
1.2 |
Nid Storage |
90.3 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Taunton River Near Bridgewater
|
592cfs |
Jones River At Kingston
|
36cfs |
Threemile River At North Dighton
|
119cfs |
Segreganset River Near Dighton
|
28cfs |
Indian Head River At Hanover
|
104cfs |
Wading River Near Norton
|
55cfs |
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.
Stony Brook Pond Dam