Thompson Lake Dam Reservoir Report
Nearby: Johnson Lake Dam Birnbaum Lake Dam
Last Updated: December 18, 2025
Thompson Lake Dam, located in St.
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Summary
Charles, Missouri, is a privately owned structure that serves multiple purposes, including fire protection, stock, and small fish pond. Built in 1969, this earth dam stands at a height of 30 feet and has a storage capacity of 160 acre-feet. The dam is situated on TR Sams Creek and covers a surface area of 10 acres, with a drainage area of 80 acres.
Despite being privately owned, Thompson Lake Dam is not regulated or inspected by the state of Missouri. With a low hazard potential and a condition assessment that is not rated, the dam does not pose a significant risk to surrounding areas. While the dam does not have a spillway or outlet gates, it provides essential water storage for fire protection and recreational activities. Although the dam is not under the jurisdiction of any federal or state agency, it remains a valuable resource for the local community.
While Thompson Lake Dam may not be as large or high-profile as other dams in the area, its role in providing water storage for fire protection and recreational use should not be underestimated. With its low hazard potential and unregulated status, the dam continues to serve its purpose effectively without the need for state oversight. As a privately owned structure, Thompson Lake Dam stands as a testament to the importance of local water resource management and the diverse roles that dams can play in supporting communities.
Year Completed |
1969 |
Dam Height |
30 |
River Or Stream |
TR SAMS CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
80 |
Nid Storage |
160 |
Structural Height |
30 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
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.
Thompson Lake Dam