Indian Brook Dam Reservoir Report
Nearby: Island Pond Dam Hayden Pond Dam
Last Updated: December 21, 2025
Indian Brook Dam, located in Plymouth, Massachusetts, serves as a vital irrigation resource in the region.
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Summary
Constructed in 1930, this earth dam stands at a height of 12.5 feet and has a storage capacity of 100 acre-feet, with a normal storage level of 15 acre-feet. The dam regulates the flow of Indian Brook, covering a surface area of 8 acres and draining a watershed area of 6.1 square miles.
Managed by the Massachusetts Department of Conservation and Recreation, Indian Brook Dam is state-regulated and undergoes regular inspections to ensure its structural integrity. Despite being classified as having a high hazard potential, the dam is currently assessed to be in fair condition. In the event of an emergency, protocols are in place, with an Emergency Action Plan last revised in October 2016. Although the dam poses a moderate risk, appropriate risk management measures are in place to mitigate any potential threats.
Water resource and climate enthusiasts will appreciate the importance of Indian Brook Dam in providing irrigation and water regulation services in Plymouth. With its historical significance and ongoing maintenance efforts, the dam stands as a testament to the state's commitment to water resource management and public safety. As a critical infrastructure piece in the region, Indian Brook Dam plays a crucial role in supporting agricultural activities and ensuring water security for the surrounding community.
Year Completed |
1930 |
Dam Length |
200 |
Dam Height |
12.5 |
River Or Stream |
INDIAN BROOK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
8.5 |
Drainage Area |
6.1 |
Nid Storage |
100 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
13 |
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.
Indian Brook Dam