Pine Lake Dam Reservoir Report
Nearby: Mill Pond Dam Garside Reservoir Dam
Last Updated: December 20, 2025
Pine Lake Dam, located in Duxbury, Massachusetts, is a gravity dam primarily used for irrigation purposes.
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Summary
Completed in 1900, this private-owned structure stands at a height of 7 feet and has a hydraulic height of 6.4 feet. With a maximum storage capacity of 77 acre-feet and a normal storage level of 70.4 acre-feet, Pine Lake Dam plays a crucial role in water management within its drainage area of 2000 acres. The dam is regulated by the Department of Conservation and Recreation in Massachusetts, ensuring that it meets state inspection and enforcement requirements.
Although Pine Lake Dam has a low hazard potential, it is classified as having a moderate risk level. The dam is equipped with an uncontrolled spillway and does not have associated locks or outlet gates. While the structure's condition is currently not rated, it undergoes inspection every 10 years to assess its safety and integrity. Despite its age, Pine Lake Dam continues to provide essential irrigation services for the surrounding area, highlighting the importance of maintaining and managing water resources in the face of changing climate conditions.
Year Completed |
1900 |
Dam Length |
150 |
Dam Height |
7 |
River Or Stream |
TRIBUTARY OF SOUTH RIVER |
Primary Dam Type |
Gravity |
Hydraulic Height |
6.4 |
Drainage Area |
2000 |
Nid Storage |
77 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
7 |
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.
Pine Lake Dam