Mosley Lake Dam Reservoir Report
Nearby: Arnot Lake Dam Fette Lake Dam
Last Updated: December 19, 2025
Mosley Lake Dam, located in St.
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Summary
Peters, Missouri, was completed in 1960 and serves multiple purposes including fire protection, stock, and as a small fish pond. This private-owned earth dam stands at a height of 20 feet, with a storage capacity of 107 acre-feet and a normal storage level of 55 acre-feet. The dam is situated on TR Cunningham Branch, within the Kansas City District, and is not regulated or inspected by the state.
With a low hazard potential and a condition assessment not yet rated, Mosley Lake Dam remains an important structure for water resource management in the area. While it does not have a spillway or outlet gates, the dam provides valuable storage for the surrounding 220-acre drainage area. Despite its age, the dam's risk assessment, emergency action plan, and inundation maps have not been updated or prepared, highlighting the need for continued monitoring and maintenance to ensure its safety and effectiveness in the face of potential climate challenges.
Year Completed |
1960 |
Dam Height |
20 |
River Or Stream |
TR CUNNINGHAM BRANCH |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
220 |
Nid Storage |
107 |
Structural Height |
20 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
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.
Mosley Lake Dam