Hayden Pond Dam Reservoir Report
Last Updated: December 20, 2025
Located in Plymouth, Massachusetts, Hayden Pond Dam stands as a testament to the importance of water resource management and climate resilience.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1900, this privately owned structure on the Eel River serves primarily for irrigation purposes, with additional benefits for recreation. The dam, with a height of 12 feet and a length of 350 feet, has a storage capacity of 75 acre-feet, providing vital water resources for the surrounding area.
Despite its historical significance, Hayden Pond Dam is facing challenges in terms of its condition assessment, which has been rated as poor. With a hazard potential deemed low and a moderate risk assessment score of 3, the dam's structural integrity and safety measures are crucial areas of concern. The last inspection date was in 2002, with an inspection frequency of 10 years, highlighting the need for regular monitoring and maintenance to ensure the dam's reliability.
The state-regulated Hayden Pond Dam is under the jurisdiction of the Department of Conservation and Recreation in Massachusetts. With a controlled spillway and unlisted foundations, the dam's risk management measures and emergency action plans are areas that require attention to enhance its resilience to potential hazards. As water resource and climate enthusiasts, it is essential to advocate for the proper upkeep and modernization of vital infrastructure like Hayden Pond Dam to safeguard both the environment and local communities.
Year Completed |
1900 |
Dam Length |
350 |
Dam Height |
12 |
River Or Stream |
EEL RIVER |
Primary Dam Type |
Other |
Hydraulic Height |
10 |
Drainage Area |
3 |
Nid Storage |
75 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
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.
Hayden Pond Dam