Lower Magurrewock Dam Reservoir Report
Last Updated: December 22, 2025
Lower Magurrewock Dam, located in Washington County, Maine, is a vital structure managed by the US Fish and Wildlife Service.
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Summary
Completed in 1957, this earth dam stands at a height of 8 feet and spans a length of 1670 feet. The primary purpose of the dam is to create a Fish and Wildlife Pond, providing essential habitat for local wildlife.
With a storage capacity of 180 acre-feet and a surface area of 36 acres, Lower Magurrewock Dam plays a crucial role in managing water resources and supporting the surrounding ecosystem. The dam features a controlled spillway and other controlled outlet gates, ensuring proper water flow and management. Despite being classified as having a low hazard potential, the dam's condition assessment indicates fair maintenance, highlighting the need for ongoing inspections and management to ensure its continued safety and functionality.
Managed by the Fish and Wildlife Service, Lower Magurrewock Dam stands as a testament to the importance of sustainable water resource management in supporting both wildlife habitats and local communities. Its strategic location and design contribute to the conservation efforts in the region, making it a key asset for water resource and climate enthusiasts alike.
Year Completed |
1957 |
Dam Length |
1670 |
Dam Height |
8 |
River Or Stream |
Unnamed streams |
Primary Dam Type |
Earth |
Surface Area |
36 |
Hydraulic Height |
8 |
Drainage Area |
0.45 |
Nid Storage |
180 |
Structural Height |
8 |
Outlet Gates |
Other Controlled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
8 |
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 |
St. Croix River At Vanceboro
|
369cfs |
Libby Brook Near Northfield
|
9cfs |
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.
Lower Magurrewock Dam