Thomas Lake Dam Reservoir Report
Last Updated: December 13, 2025
Thomas Lake Dam in Oconee, Georgia, is a private dam with a buttress core type standing at a height of 30 feet.
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Summary
The dam boasts a storage capacity of 73 acre-feet, with a maximum storage of 73 acre-feet and a normal storage level of 49 acre-feet. Although the dam is uncontrolled, it is considered to have a low hazard potential and a moderate risk assessment rating of 3.
Located within the Savannah District, Thomas Lake Dam is situated on the Thomas Lake, contributing to a surface area of 5 acres. The dam has not been rated for its condition assessment, and the last inspection date is unknown. Despite being privately owned, the dam is not state regulated, but it undergoes state inspections every 5 years. With its serene surroundings and vital role in storing water resources, Thomas Lake Dam stands as a significant structure in the region for water resource and climate enthusiasts to appreciate.
Overall, Thomas Lake Dam presents an intriguing case study for those interested in water resource management and climate-related infrastructure. As a privately owned dam with unique characteristics such as a buttress core type and uncontrolled spillway, it offers insights into the complexities of managing water storage structures. With its moderate risk assessment and low hazard potential, the dam underscores the importance of regular inspections and maintenance to ensure the safety and functionality of such vital water management infrastructure.
Dam Height |
30 |
Surface Area |
5 |
Nid Storage |
73 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Oconee River Near Penfield
|
527cfs |
Apalachee River Near Bostwick
|
115cfs |
Middle Oconee River Near Athens
|
229cfs |
North Oconee River At College St
|
121cfs |
Middle Oconee River Near Arcade
|
198cfs |
South Fork Broad River At Carlton
|
87cfs |
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