Koepke Lake Dam South Reservoir Report
Nearby: Miller Lake Dam Koepke Lake Dam North
Last Updated: December 18, 2025
Koepke Lake Dam South, located in Marthasville, Missouri, is a privately owned earth dam constructed in 1967 for fire protection, stock, and recreational purposes.
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Summary
Standing at a height of 40 feet and spanning 650 feet in length, this dam has a storage capacity of 90 acre-feet and covers a surface area of 7 acres. It serves as a vital structure for the local community, ensuring water availability for various uses while also providing a serene setting for recreational activities.
Managed by the DAM AND RESERVOIR SAFETY PROG in Missouri, Koepke Lake Dam South is subject to state regulations, inspection, and enforcement to ensure its safety and functionality. Although categorized with a significant hazard potential, the dam's condition was assessed as satisfactory during the last inspection in 2007. With a moderate risk rating, measures for risk management are yet to be specified. The dam's location along TR-CHARRETE CR in the Warren County offers a glimpse into the intersection of water resource management, climate impact, and infrastructure development in the region.
Despite its age, Koepke Lake Dam South stands as a testament to the importance of water resource infrastructure in ensuring community resilience and safety. As water resource and climate enthusiasts explore the dynamics of this dam, they gain insights into the complexities of managing and maintaining such critical structures amidst changing environmental conditions. With its significant role in water storage, fire protection, and recreational activities, Koepke Lake Dam South continues to be a focal point for understanding the intersection of human needs, natural resources, and environmental stewardship.
Year Completed |
1967 |
Dam Length |
650 |
Dam Height |
40 |
River Or Stream |
TR-CHARRETE CR |
Surface Area |
7 |
Drainage Area |
45 |
Nid Storage |
90 |
Structural Height |
40 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bourbeuse River At Union
|
73cfs |
Missouri River At Hermann
|
29400cfs |
Dardenne Creek At Ofallon
|
6cfs |
Cuivre River Near Troy
|
33cfs |
Bonhomme Creek Near Ellisville
|
0cfs |
Dardenne Creek At Old Town St. Peters
|
11cfs |
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.
Koepke Lake Dam South