Thomas Lake Dam Reservoir Report
Last Updated: December 24, 2025
Thomas Lake Dam in Ohio is a privately owned structure that serves the primary purpose of tailings containment.
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Summary
This earth dam stands at a height of 26.7 feet and has a capacity to store 66 acre-feet of water. Located in Perry County, near the city of Tropic, this dam plays a crucial role in managing water resources in the area. It is regulated by the Department of Natural Resources in Ohio and undergoes regular inspections to ensure its safety and compliance with state regulations.
Despite its low hazard potential, Thomas Lake Dam has been assessed to be in poor condition as of November 2018. The dam has a drainage area of 0.09 square miles and a surface area of 6.5 acres, with a maximum discharge capacity of 134 cubic feet per second. While it has not undergone any major modifications in recent years, the dam faces challenges that need to be addressed to improve its condition and effectiveness in water management. Climate and water resource enthusiasts may find interest in monitoring the developments and maintenance efforts surrounding Thomas Lake Dam to safeguard its role in the local ecosystem.
With the potential risks associated with its poor condition, stakeholders are encouraged to prioritize the maintenance and upkeep of Thomas Lake Dam to prevent any potential hazards or failures. As a critical infrastructure for water resource management, the dam's importance in the region cannot be understated. Continued monitoring, assessment, and necessary repairs are essential to ensure the long-term sustainability and functionality of Thomas Lake Dam for the benefit of the surrounding communities and the environment at large.
Dam Length |
437 |
Dam Height |
26.7 |
River Or Stream |
TRIBUTARY TO BENNETT RUN |
Primary Dam Type |
Earth |
Surface Area |
6.5 |
Drainage Area |
0.09 |
Nid Storage |
66 |
Hazard Potential |
Low |
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.
Thomas Lake Dam