Robert Knox Lake (South) Reservoir Report

Last Updated: December 5, 2025

Robert Knox Lake (South) in McDuffie, Georgia, is a privately owned earth dam constructed in 1978 by Knox Construction for recreational purposes.


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Summary

The dam stands at 28 feet high and spans 535 feet, with a storage capacity of 65 acre-feet. The lake covers a surface area of 5 acres and has a drainage area of 58 square miles, providing a serene retreat for water resource and climate enthusiasts to enjoy.

Although the dam's hazard potential is rated low, it has a moderate risk assessment level due to its age and lack of recent condition assessments. The last inspection was conducted in 2009, with a recommended inspection frequency of every 5 years. Despite its uncontrolled spillway and outlet gates, the dam's risk management measures are not specified, raising concerns about its long-term safety and maintenance.

Located in the Charleston District, Robert Knox Lake (South) offers a picturesque setting for outdoor activities but requires careful monitoring and potentially updated risk management strategies to ensure the safety and sustainability of this recreational water resource. Climate and water enthusiasts visiting the area should be mindful of the dam's condition and the need for regular inspections to mitigate any potential risks associated with its aging infrastructure.

Year Completed

1978

Dam Length

535

Dam Height

28

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

5

Drainage Area

58

Nid Storage

65

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

28
       
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.