Thompson Lake Dam Reservoir Report
Last Updated: December 5, 2025
Thompson Lake Dam, located in Unadilla, Georgia, is a privately owned earth dam primarily used for recreation purposes.
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Summary
Standing at a height of 11.7 feet with a hydraulic height of 11.3 feet, the dam has a length of 345 feet and a storage capacity of 235.1 acre-feet. The dam's spillway type is uncontrolled, and it features uncontrolled outlet gates.
Although the dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment, it undergoes inspections every five years to ensure its safety and integrity. The last inspection was conducted in March 2017. Despite its moderate risk level of 3, there are no specific risk management measures or emergency action plans currently in place for Thompson Lake Dam.
For water resource and climate enthusiasts, Thompson Lake Dam presents an intriguing case study in private dam ownership and management for recreational purposes. With its picturesque location and moderate risk level, there is potential for further research and analysis on the dam's safety measures, risk assessment, and emergency preparedness to ensure the surrounding community and environment are adequately protected in the event of a dam failure or emergency situation.
Dam Length |
345 |
Dam Height |
11.7 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
24.8 |
Hydraulic Height |
11.3 |
Nid Storage |
235.1 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Turkey Creek At Byromville
|
10cfs |
Flint River At Ga 26
|
2200cfs |
Tucsawhatchee Creek Near Hawkinsville
|
39cfs |
Ocmulgee River At Hawkinsville
|
2570cfs |
Muckalee Creek Near Americus
|
222cfs |
Muckalee Creek At Ga 195
|
419cfs |
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