Lake Cumberland Dam Reservoir Report

Last Updated: December 5, 2025

Lake Cumberland Dam in Cobb, Georgia, stands as a testament to engineering prowess with its earth dam construction type and buttress core design.


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Summary

The dam, with a height of 25.2 feet and a hydraulic height of 21 feet, primarily serves the purpose of recreation, offering a serene retreat for water resource and climate enthusiasts alike. Its low hazard potential and moderate risk assessment make it a safe and inviting destination for outdoor activities.

Located in the Mobile District, Lake Cumberland Dam boasts a storage capacity of 24.4 acre-feet, providing ample opportunity for water-based recreation. The dam's uncontrolled spillway and outlet gates enhance its functionality while also maintaining a low-risk profile. Despite not being state-regulated, the dam undergoes regular inspections, ensuring its structural integrity and safety for visitors. With its picturesque surroundings and tranquil atmosphere, Lake Cumberland Dam is a must-visit destination for those seeking a blend of natural beauty and recreational opportunities in Georgia.

As Lake Cumberland Dam continues to draw visitors seeking relaxation and outdoor adventure, its uncontrolled spillway and low hazard potential contribute to its reputation as a safe and enjoyable destination. With a focus on recreation and a dedication to regular inspections, the dam remains a reliable and well-maintained structure in the heart of Cobb County. Whether exploring its 2-acre surface area or simply basking in its scenic beauty, Lake Cumberland Dam offers a unique and fulfilling experience for water resource and climate enthusiasts looking to connect with nature in a peaceful setting.

Dam Length

180

Dam Height

25.2

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

21

Nid Storage

24.4

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

25
       
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.