Cobb Lake Dam Reservoir Report

Last Updated: December 5, 2025

Cobb Lake Dam, located in Davisboro Environs, Georgia, was completed in 1968 and serves as a recreational water resource for the local community.


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Summary

The dam, primarily owned by a private entity, stands at a height of 15 feet and has a length of 580 feet, with a storage capacity of 179 acre-feet. With a surface area of 16 acres and a drainage area of 400 acres, the dam provides a tranquil setting for outdoor activities and wildlife habitat.

Despite being classified as having a low hazard potential, Cobb Lake Dam has a moderate risk assessment due to its condition not being rated. The last inspection of the dam was conducted in November 1997, with a recommended inspection frequency of every 5 years. While the dam currently has uncontrolled outlets and spillways, there are no associated structures or locks. Although the dam is not regulated by the state, it is under the jurisdiction of Georgia and falls within the Charleston District of the US Army Corps of Engineers.

Water resource and climate enthusiasts visiting Cobb Lake Dam can appreciate its scenic beauty and recreational opportunities, while also being mindful of the need for regular inspections and maintenance to ensure the safety and longevity of the structure. The dam's location in the Washington County of Georgia offers a peaceful retreat for outdoor enthusiasts and nature lovers, making it a valuable asset for both the local community and visitors seeking to enjoy the beauty of the area's water resources.

Year Completed

1968

Dam Length

580

Dam Height

15

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

16

Drainage Area

400

Nid Storage

179

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

15
       
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.