Thomaston Reservoir Dam Reservoir Report
Last Updated: December 6, 2025
Thomaston Reservoir Dam, located in Upson, Georgia, serves as a vital water supply source for the local community.
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Summary
Completed in 1982, this earth dam stands at a height of 55 feet and stretches over 1,095 feet, providing a storage capacity of 945 acre-feet. The dam's primary purpose is water supply, supporting a normal storage capacity of 607 acre-feet and covering a surface area of 27 acres.
Managed by the local government, Thomaston Reservoir Dam is inspected every five years, with a low hazard potential and a moderate risk assessment rating. The dam features uncontrolled spillways and outlet gates, with a stone core foundation. The surrounding area enjoys the benefits of this key water resource infrastructure, ensuring a stable and reliable water supply for the region. With its strategic location and efficient design, Thomaston Reservoir Dam plays a crucial role in water resource management and climate resilience efforts in the area.
Year Completed |
1982 |
Dam Length |
1095 |
Dam Height |
55 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
27 |
Nid Storage |
945 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
55 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Flint River Near Culloden
|
1240cfs |
Flint River Near Griffin
|
341cfs |
Shoal Creek At Shoal Creek Rd
|
17cfs |
Line Creek Near Senoia
|
24cfs |
Flint River Near Lovejoy
|
95cfs |
Tobesofkee Creek Near Macon
|
6cfs |
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.
Thomaston Reservoir Dam