Allen Pond Reservoir Report
Nearby: Nezinscot River Pleasant Pond
Last Updated: December 16, 2025
Allen Pond in Greene, Maine, is a private water resource managed for flood risk reduction with a primary dam type of concrete.
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Summary
Built in 1850, this structure stands at 7 feet tall and spans 140 feet in length, holding a maximum storage capacity of 915 acre-feet. The pond covers a surface area of 183 acres and serves various purposes including fire protection, fish and wildlife habitat, hydroelectric power generation, and recreation.
Owned by a private entity, Allen Pond is regulated by the Maine Emergency Management Agency (MEMA) and undergoes regular inspections to ensure its structural integrity. With a low hazard potential and a condition assessment of "Not Rated," the pond presents minimal risk to the surrounding community. Despite its age, Allen Pond continues to play a vital role in managing water resources in the region and providing multiple benefits to the local ecosystem and residents. For water resource and climate enthusiasts, Allen Pond stands as a testament to the importance of sound infrastructure and responsible water management practices.
Year Completed |
1850 |
Dam Length |
140 |
Dam Height |
7 |
River Or Stream |
Allen Pond |
Primary Dam Type |
Concrete |
Surface Area |
183 |
Hydraulic Height |
4 |
Drainage Area |
3.1 |
Nid Storage |
915 |
Structural Height |
7 |
Hazard Potential |
Low |
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.
Allen Pond
Gulf Island Pond Public Boat Ramp