Meddybemps Reservoir Report
Nearby: Bearce Flowage Dam Cranberry Lake Dam
Last Updated: December 22, 2025
Meddybemps is a state-owned dam located in Washington County, Maine, along the Dennys River.
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Summary
Completed in 1973, this concrete structure stands at a height of 10 feet and has a hydraulic height of 7 feet, serving primarily for recreation purposes. With a storage capacity of 18,995 acre-feet, Meddybemps offers opportunities for fish and wildlife pond management, flood risk reduction, and outdoor recreation activities.
Despite having a low hazard potential and being in a satisfactory condition as of its last inspection in 1984, Meddybemps remains under state regulation and oversight by the Maine Emergency Management Agency (MEMA). The dam has not been rated for its current condition, but continues to be inspected every 12 years to ensure its safety and functionality. While no emergency action plan (EAP) or inundation maps have been prepared for this site, the dam's risk assessment and management measures are yet to be fully documented.
Located in a picturesque setting along the Dennys River, Meddybemps provides a tranquil escape for water resource and climate enthusiasts to enjoy the beauty of Maine's natural landscape. With its recreational amenities and importance for fish and wildlife conservation, this dam serves as a valuable resource for both the local community and visitors seeking to connect with the region's abundant natural resources.
Year Completed |
1973 |
Dam Length |
56 |
Dam Height |
10 |
River Or Stream |
Dennys River |
Primary Dam Type |
Concrete |
Surface Area |
6765 |
Hydraulic Height |
7 |
Nid Storage |
18995 |
Structural Height |
10 |
Hazard Potential |
Low |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
St. Croix River At Baring
|
1240cfs |
Dennys River At Dennysville
|
1010cfs |
Old Stream Near Wesley
|
27cfs |
Grand Lake Stream At Grand Lake Stream
|
113cfs |
Libby Brook Near Northfield
|
9cfs |
St. Croix River At Vanceboro
|
362cfs |
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.
Meddybemps