Lake Marie Dam Reservoir Report
Last Updated: December 11, 2025
Lake Marie Dam, located in Mercer, Missouri, is a privately owned structure that serves as a vital recreational resource for the area.
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Summary
Completed in 1981, this dam stands at a height of 50 feet and has a length of 1100 feet, creating a reservoir with a normal storage capacity of 882 acre-feet. The dam also plays a crucial role in flood control, with a maximum discharge capacity of 3512 cubic feet per second.
Despite its satisfactory condition assessment in 2007, Lake Marie Dam has been classified as having a high hazard potential. However, the risk assessment remains moderate, indicating a level of preparedness for potential emergencies. The dam is regulated, inspected, and enforced by the Dam and Reservoir Safety Program in Missouri, ensuring compliance with state guidelines and safety measures. With its scenic surroundings and recreational opportunities, Lake Marie Dam is a valuable asset for water resource and climate enthusiasts in the area.
Overall, Lake Marie Dam serves as a key component in water management and recreation in Mercer, Missouri. With its significant storage capacity and flood control capabilities, the dam provides essential benefits to the local community. While it is important to monitor and address any potential risks associated with the dam, its role in enhancing the region's water resources and outdoor activities cannot be understated. For those interested in water resource management and climate resilience, Lake Marie Dam is a site worth exploring and appreciating.
Year Completed |
1981 |
Dam Length |
1100 |
Dam Height |
50 |
River Or Stream |
POPS BRANCH |
Primary Dam Type |
Other |
Surface Area |
30 |
Drainage Area |
342 |
Nid Storage |
970 |
Structural Height |
50 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
50 |
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.
Lake Marie Dam