Asbell Lake Dam South Reservoir Report

Last Updated: December 13, 2025

Asbell Lake Dam South, located in Twiggs, Georgia, is a private dam primarily used for recreation on Johnson Creek.


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Summary

This earth dam with a buttress core stands at a height of 22.4 feet and has a maximum storage capacity of 115.4 acre-feet. Despite being state-regulated, the dam is not permitted by the state but undergoes regular inspections, with the last one conducted in December 2020, indicating a low hazard potential and moderate risk assessment.

Managed by the Natural Resources Conservation Service, Asbell Lake Dam South features an uncontrolled spillway and outlet gates. While the dam's condition is currently not rated, its emergency action plan status, inundation maps, and risk management measures remain unknown. The surrounding area covers 10 acres of surface area and serves as a popular spot for recreational activities, making it a crucial water resource for the community, although its year of completion and foundation details are unspecified. With its intriguing design and moderate risk level, Asbell Lake Dam South stands as an essential part of Georgia's water infrastructure for enthusiasts interested in water resources and climate impacts.

Dam Length

310

Dam Height

22.4

River Or Stream

JOHNSON CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

17

Nid Storage

115.4

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

22
       
Seasonal Comparison

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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.