Wolfner Dam Reservoir Report
Nearby: Lakeview Acres Dam Coleman Dam
Last Updated: December 19, 2025
Wolfner Dam, located in Defiance, Missouri, is a private earth dam completed in 1981 primarily for recreational purposes.
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Summary
Standing at 25 feet tall with a storage capacity of 60 acre-feet, the dam spans a drainage area of 350 acres and provides a surface area of 5 acres for water enthusiasts to enjoy. With a low hazard potential and a condition assessment of "Not Rated," Wolfner Dam offers a safe and inviting environment for visitors seeking outdoor recreation opportunities.
Situated along a tributary to the Little Femme Osage Creek, Wolfner Dam is owned privately and not regulated by the state. Despite its modest height and storage capacity, the dam serves as a vital resource for the local community, offering a tranquil setting for fishing, boating, and other water-based activities. With its designer and federal agency information not listed, Wolfner Dam remains a hidden gem for water resource and climate enthusiasts looking to explore Missouri's diverse landscape.
Maintaining its structural integrity with regular inspections, Wolfner Dam has not faced any significant modifications or emergencies since its completion. Although its emergency action plan and risk management measures are not explicitly documented, the dam's low hazard potential suggests a minimal likelihood of any safety concerns. As a key feature in the Kansas City District, Wolfner Dam stands as a testament to the importance of private initiatives in providing sustainable water resources for recreational use in the heart of St. Charles County.
Year Completed |
1981 |
Dam Height |
25 |
River Or Stream |
TRIB TO LITTLE FAMME OSAGE CR |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
350 |
Nid Storage |
60 |
Structural Height |
25 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
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.
Wolfner Dam
Katy Trail 1800, Saint Charles County