Moose-Willow 2 Reservoir Report
Nearby: Moose-Willow 1 Washburn Lake
Last Updated: December 5, 2025
Moose-Willow 2, located in Aitkin, Minnesota, is a state-regulated dam with a primary purpose of serving as a fish and wildlife pond.
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Summary
Constructed in 1966, this earth dam stands at a height of 14 feet and has a length of 1500 feet, providing a storage capacity of 90 acre-feet. Despite its low hazard potential, the dam's condition assessment is rated as poor, emphasizing the need for maintenance and potential upgrades to ensure its stability and functionality.
The dam is situated on the Willow River, within the St. Paul District, and is overseen by the Minnesota Department of Natural Resources. The surrounding area offers a surface area of 20 acres and a drainage area of 1.7 square miles, making it a vital habitat for various fish and wildlife species. With a very high risk assessment rating of 1, it is crucial for proper risk management measures to be implemented to mitigate any potential hazards or failures that could impact the surrounding community and ecosystem.
Despite its current condition assessment of poor, Moose-Willow 2 continues to play a significant role in supporting the local fish and wildlife populations. As water resource and climate enthusiasts, it is essential to monitor and address the dam's maintenance needs to ensure its continued functionality and safety. By collaborating with regulatory agencies and stakeholders, proactive measures can be taken to enhance the dam's resilience and preserve its ecological value for future generations.
Year Completed |
1966 |
Dam Length |
1500 |
Dam Height |
10 |
River Or Stream |
WILLOW RIVER |
Primary Dam Type |
Earth |
Surface Area |
20 |
Drainage Area |
1.7 |
Nid Storage |
90 |
Structural Height |
14 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Mississippi River At Grand Rapids
|
639cfs |
Mississippi River At Aitkin
|
1010cfs |
Prairie River Near Taconite
|
63cfs |
Mississippi River At Brainerd
|
972cfs |
St. Louis River At Scanlon
|
533cfs |
Crow Wing River Near Pillager
|
742cfs |
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.
Moose-Willow 2
670th Street Aitkin County