Cranberry Lake Dam Reservoir Report
Nearby: Daly Flowage Dam Hanson Flowage Dike
Last Updated: December 22, 2025
Cranberry Lake Dam, located in Washington County, Maine, is a Federal structure managed by the US Fish and Wildlife Service.
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Summary
Built in 1950, this earth dam stands at 10 feet tall and stretches 150 feet in length, creating a fish and wildlife pond on Moosehorn Creek. With a storage capacity of 737 acre-feet, the dam serves as a crucial resource for maintaining the habitat in the area, with a low hazard potential and fair condition assessment.
The dam features a controlled spillway with a width of 7 feet and other controlled outlet gates. It has a maximum discharge capacity of 282 cubic feet per second and covers a surface area of 127 acres, serving a drainage area of 2 square miles. Despite its age, the dam is regularly inspected by the Fish and Wildlife Service, with the last assessment conducted in June 2014. With a very high risk rating of 1, the dam is closely monitored to ensure the safety and integrity of the structure for both wildlife preservation and flood control purposes.
In the event of an emergency, the dam is equipped with emergency action plans and contacts, although the details of their preparedness are not specified in the data. With the oversight of the Fish and Wildlife Service, Cranberry Lake Dam plays a vital role in managing the water resources in the region while also contributing to the conservation and protection of the local environment.
Year Completed |
1950 |
Dam Length |
150 |
Dam Height |
10 |
River Or Stream |
Moosehorn Creek |
Primary Dam Type |
Earth |
Surface Area |
127 |
Hydraulic Height |
10 |
Drainage Area |
2 |
Nid Storage |
737 |
Structural Height |
10 |
Outlet Gates |
Other Controlled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
St. Croix River At Baring
|
1100cfs |
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
|
369cfs |
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.
Cranberry Lake Dam