Big Bearhole Pond Dam Reservoir Report
Nearby: Middle Pond Dam #2 Middle Pond Dam #1
Last Updated: December 20, 2025
Big Bearhole Pond Dam, located in Taunton, Massachusetts, is a state-regulated earth dam built in 1920 for the primary purpose of creating a Fish and Wildlife Pond.
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Summary
The dam stands at a height of 17.5 feet with a hydraulic height of 9 feet, holding a maximum storage capacity of 370 acre-feet. With a normal storage capacity of 290 acre-feet and a surface area of 30 acres, the dam plays a crucial role in supporting the local ecosystem and recreational activities in the area.
Managed by the Department of Conservation and Recreation, Big Bearhole Pond Dam has a high hazard potential and is classified as being in fair condition as of the last assessment in June 2020. The dam is inspected biennially to ensure its structural integrity and safety. Despite the moderate risk assessment score of 3, the dam remains a vital resource for water management and conservation efforts in Bristol County, Massachusetts. Enthusiasts of water resources and climate will find Big Bearhole Pond Dam to be a fascinating example of sustainable infrastructure supporting both wildlife habitat and recreational opportunities in the region.
Overall, Big Bearhole Pond Dam serves as a significant water resource feature on Thompson Brook, contributing to the environmental health and water supply reliability in the area. Its historical significance, coupled with its ongoing management and maintenance efforts, make it a noteworthy site for those interested in the intersection of water management, climate resilience, and ecological conservation.
Year Completed |
1920 |
Dam Length |
250 |
Dam Height |
17.5 |
River Or Stream |
THOMPSON BROOK |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
9 |
Drainage Area |
1.35 |
Nid Storage |
370 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
18 |
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.
Big Bearhole Pond Dam