Dane Perkins Reservoir Report

Last Updated: December 14, 2025

Dane Perkins is a hydroelectric dam located on the Mousam River in Kennebunk, Maine.


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Summary

Built in 1979, this concrete gravity dam stands at 12 feet tall and spans 83 feet in length, with a storage capacity of 150 acre-feet. The dam serves multiple purposes, including hydroelectric power generation and recreation, making it a valuable asset for the local community.

Managed by the Federal Energy Regulatory Commission, Dane Perkins has a low hazard potential and a moderate risk assessment rating. With a spillway width of 50 feet and a maximum discharge of 1150 cubic feet per second, the dam is equipped to handle potential emergencies. While the condition assessment is not available, the dam undergoes inspections every three years to ensure its safety and functionality.

For water resource and climate enthusiasts, Dane Perkins offers a fascinating glimpse into the intersection of human infrastructure and natural resources. Its presence on the Mousam River not only provides clean energy but also creates recreational opportunities for the community. With proper management and maintenance, this hydroelectric dam will continue to play a crucial role in sustainable water resource management in Maine.

Year Completed

1979

Dam Length

83

Dam Height

12

River Or Stream

Mousam River

Primary Dam Type

Concrete

Surface Area

25

Drainage Area

125

Nid Storage

150

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Low

Nid Height

12
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.