Hanson Flowage Dike Reservoir Report
Nearby: Maccrae Flowage Seeley Flowage Dam
Last Updated: December 22, 2025
The Hanson Flowage Dike, located in Washington County, Maine, is a Federal-owned structure designed for the primary purpose of creating a Fish and Wildlife Pond.
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Summary
Completed in 1958, this Earth-type dam stands at a height of 7 feet and has a length of 325 feet, impounding a maximum storage capacity of 81 acre-feet. The dam is regulated by the Maine Emergency Management Agency (MEMA) and undergoes regular state inspection, enforcement, and permitting to ensure its safety and compliance with regulations.
Situated on Cranberry Brook, the Hanson Flowage Dike serves as a vital habitat for fish and wildlife, with a normal storage capacity of 9 acre-feet and a surface area of 24 acres. Despite its low hazard potential, the dam has not been condition rated, and emergency preparedness measures such as an Emergency Action Plan (EAP) are yet to be established. The surrounding area, represented by Congressman Jared F. Golden, benefits from the recreational and ecological value provided by the flowage, contributing to the conservation efforts in the region.
For water resource and climate enthusiasts, the Hanson Flowage Dike presents an opportunity to explore the intersection of infrastructure, conservation, and regulatory management. Its significance lies not only in its function as a pond for fish and wildlife but also in its role in flood control and water management. As efforts continue to assess and enhance the safety and resilience of this structure, it stands as a testament to the importance of sustainable water resource management in the face of changing climate conditions.
Year Completed |
1958 |
Dam Length |
325 |
Dam Height |
7 |
River Or Stream |
Cranberry Brook |
Primary Dam Type |
Earth |
Surface Area |
24 |
Hydraulic Height |
6 |
Nid Storage |
81 |
Structural Height |
7 |
Hazard Potential |
Low |
Nid Height |
7 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
St. Croix River At Baring
|
1100cfs |
Dennys River At Dennysville
|
1010cfs |
Grand Lake Stream At Grand Lake Stream
|
113cfs |
Old Stream Near Wesley
|
27cfs |
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.
Hanson Flowage Dike