Thomas Bros Lake Dam Reservoir Report
Last Updated: December 11, 2025
Thomas Bros Lake Dam, located in Forest Green, Missouri, was completed in 1942 and stands at a height of 25 feet.
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Summary
This earth dam, primarily used for purposes other than flood control or water supply, has a maximum storage capacity of 187 acre-feet and a normal storage capacity of 117 acre-feet. With a surface area of 14 acres and a drainage area of 220 square miles, the dam poses a high hazard potential.
Despite being privately owned and not regulated by the state, Thomas Bros Lake Dam remains a significant structure in the region, serving as a vital resource for water management and conservation. The dam, built with a buttress core type, plays a crucial role in controlling the flow of the TR-E FK CHARITON RIV river or stream. Its condition remains unrated, and there is no current emergency action plan in place, highlighting the need for ongoing monitoring and maintenance to ensure its safety and functionality for the surrounding community and environment.
As water resource and climate enthusiasts explore the intricate details of Thomas Bros Lake Dam, its historical significance and impact on the local ecosystem become apparent. The dam's presence not only alters the landscape but also influences the water flow and storage within the region. With its high hazard potential and lack of state regulation, the dam represents a unique case study in the management of private water infrastructure in Missouri. Continued attention to its maintenance and emergency preparedness will be crucial in safeguarding the surrounding area from potential risks and ensuring sustainable water resource management for future generations.
Year Completed |
1942 |
Dam Height |
25 |
River Or Stream |
TR-E FK CHARITON RIV |
Primary Dam Type |
Earth |
Surface Area |
14 |
Drainage Area |
220 |
Nid Storage |
187 |
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.
Thomas Bros Lake Dam