Thurmond Lake Dam Reservoir Report

Last Updated: December 5, 2025

Thurmond Lake Dam in Georgia, with a completion date of 1989, stands as a testament to engineering excellence and serves primarily for recreational purposes.


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Summary

This earth dam, with a height of 35 feet and a hydraulic height of 27 feet, holds a maximum storage capacity of 314 acre-feet of water, with a normal storage level of 130 acre-feet. The dam spans 460 feet in length and covers a surface area of 15 acres.

Managed by private owners, Thurmond Lake Dam is classified as having a low hazard potential and a moderate risk assessment rating. Despite not being state regulated, the dam undergoes regular inspections with the last one conducted in 2012. With its uncontrolled spillway and outlet gates, the dam ensures the safety of surrounding areas through emergency preparedness measures. The dam's location in Banks, Georgia, within the Savannah District, further showcases its importance in water resource management and climate resilience efforts.

Year Completed

1989

Dam Length

460

Dam Height

35

Primary Dam Type

Earth

Surface Area

15

Hydraulic Height

27

Nid Storage

314

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

35
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.