Mann Lake Dam Reservoir Report
Nearby: Bunker Hill Lake Dam Creason Lake Dam
Last Updated: December 17, 2025
Mann Lake Dam, located in Braymer, Missouri, was completed in 1974 and is primarily used for fire protection, stock, and as a small fish pond.
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Summary
The dam is privately owned and has a height of 25 feet, with a storage capacity of 67 acre-feet. The dam sits on TR-North Mud Creek and has a surface area of 5 acres, serving as a recreational spot in addition to its primary purposes.
Despite being privately owned, Mann Lake Dam has a high hazard potential and is not currently rated for its condition. The dam has not been inspected recently, and there is no emergency action plan in place. While the dam does not fall under state regulation or jurisdiction, its location in Caldwell County, Missouri, poses potential risks to the surrounding area in case of a breach or failure.
Enthusiasts interested in water resources and climate in the area may find Mann Lake Dam intriguing due to its unique design as an earth dam with a buttress core type. The dam's purpose for fire protection and stock maintenance, combined with its recreational opportunities, make it a noteworthy structure in the Rock Island District. As there is limited information available on its current condition and management measures, further investigation and monitoring may be warranted to ensure the safety and sustainability of Mann Lake Dam.
Year Completed |
1974 |
Dam Height |
25 |
River Or Stream |
TR-NORTH MUD CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
208 |
Nid Storage |
67 |
Structural Height |
25 |
Hazard Potential |
High |
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.
Mann Lake Dam