Coon Creek Reservoir Report
Last Updated: December 13, 2025
Coon Creek, located in Lyon County, Minnesota, is a state-regulated earth dam completed in 1977 by Ducks Unlimited.
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Summary
With a height of 8 feet and a length of 550 feet, this dam serves a primary purpose other than flood control. Maintained by the Minnesota Department of Natural Resources, the dam has a low hazard potential and is in satisfactory condition as of the last inspection in 2017.
The dam on Coon Creek has a storage capacity of 100 acre-feet and a drainage area of 90.7 square miles. Despite its modest size, the dam plays a crucial role in water resource management in the area. The dam's designer, Ducks Unlimited, has implemented effective regulatory and inspection processes to ensure its safety and functionality, making it a key component of the water infrastructure in the region.
Coon Creek dam not only provides essential flood protection and water storage but also serves as a habitat for various wildlife species in the area. With its strategic location and efficient management by the Minnesota DNR, Coon Creek is a valuable asset for water resource and climate enthusiasts interested in sustainable water management practices in the Midwest.
Year Completed |
1977 |
Dam Length |
550 |
Dam Height |
8 |
River Or Stream |
COON CREEK |
Primary Dam Type |
Earth |
Drainage Area |
90.7 |
Nid Storage |
100 |
Structural Height |
10 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Coon Creek