Mine Lamotte Dam Reservoir Report
Nearby: Lost Valley Lake Dam Slime Pond Dam
Last Updated: December 6, 2025
The Mine Lamotte Dam, located in Fredericktown, Missouri, is a privately owned Earth dam primarily used for recreational purposes.
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Summary
Completed in 1870, this dam stands at a height of 27 feet and has a storage capacity of 260 acre-feet. Situated on the TR-Little St Francois River, the dam covers a surface area of 18 acres and serves a drainage area of 575 square miles.
Despite being privately owned, the Mine Lamotte Dam has a high hazard potential and is classified as not rated in terms of condition assessment. The last inspection conducted on the dam was in September 1979, highlighting the need for updated evaluations and maintenance to ensure its structural integrity and safety. With no state regulation or enforcement in place, it is crucial for the dam's owners to take responsibility for its upkeep and emergency preparedness.
Water resource and climate enthusiasts interested in the Mine Lamotte Dam will find its historical significance and recreational value intriguing. However, the lack of recent inspections and maintenance, coupled with its high hazard potential, raise concerns about the dam's safety and the potential risks it poses to the surrounding area. As discussions around dam safety and climate change intensify, the Mine Lamotte Dam serves as a reminder of the importance of proactive management and monitoring of water infrastructure to prevent disasters and protect communities.
Year Completed |
1870 |
Dam Height |
27 |
River Or Stream |
TR-LITTLE ST FRANCOIS RIVER |
Primary Dam Type |
Earth |
Surface Area |
18 |
Drainage Area |
575 |
Nid Storage |
260 |
Structural Height |
27 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
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.
Mine Lamotte Dam