G. B.'S Lake Dam Reservoir Report

Last Updated: December 5, 2025

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Summary

B.'s Lake Dam, located in Cobb County, Georgia, is a private-owned earth dam constructed in 1953 primarily for recreation purposes, offering a serene and picturesque setting for water resource and climate enthusiasts. The dam stands at 26 feet high and spans 350 feet in length, with a storage capacity of 636 acre-feet. Situated on Mill Creek, a tributary of the Chattahoochee River, the dam's scenic surroundings and low hazard potential make it a popular destination for outdoor activities and wildlife observation.

Although not regulated by the state, G. B.'s Lake Dam undergoes regular inspections, with the last one conducted in November 2016 to ensure its structural integrity and safety. The dam features an uncontrolled spillway and outlet gates, providing essential flood control measures to manage water levels during heavy rainfall. With a moderate risk assessment rating, the dam's risk management measures and emergency preparedness plans are crucial components in maintaining public safety and protecting the surrounding environment.

Overall, G. B.'s Lake Dam serves as a vital recreational and environmental asset in the Smyrna region, offering a tranquil retreat for visitors to appreciate the beauty of nature while also highlighting the importance of sustainable water resource management in mitigating potential risks and ensuring the long-term resilience of the dam and its surrounding ecosystem.

Year Completed

1953

Dam Length

350

Dam Height

26

River Or Stream

MILL CREEK

Primary Dam Type

Earth

Surface Area

51

Nid Storage

636

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

26
       
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.