Thomas Lake Dam Reservoir Report
Nearby: Williams Lake Dam Moorhead Lake Dam
Last Updated: December 13, 2025
Thomas Lake Dam, located in Morgan, Georgia, was completed in 1985 and serves primarily for recreational purposes.
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Summary
The dam, standing at 23 feet high and stretching 330 feet in length, has a storage capacity of 132 acre-feet and a surface area of 10 acres. The dam is of earth type with a buttress core and an uncontrolled spillway.
Despite being privately owned, the dam is subject to state jurisdiction and inspection, with the last inspection conducted in April 1989. It has been rated as having a low hazard potential and a moderate risk assessment. While the condition of the dam is currently not rated, it is reassuring to see that emergency action plans and risk management measures have been put in place, indicating a proactive approach to dam safety and maintenance. For water resource and climate enthusiasts, Thomas Lake Dam presents an intriguing case study in dam infrastructure and management within the state of Georgia.
Year Completed |
1985 |
Dam Length |
330 |
Dam Height |
23 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
10 |
Nid Storage |
132 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little River Near Eatonton
|
89cfs |
Murder Creek Below Eatonton
|
54cfs |
Oconee River Near Penfield
|
527cfs |
Apalachee River Near Bostwick
|
115cfs |
Alcovy River Above Covington
|
103cfs |
Alcovy River Below Covington
|
118cfs |
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