Stone Mountain Park Lake Dam Reservoir Report

Last Updated: December 5, 2025

Stone Mountain Park Lake Dam, located in DeKalb, Georgia, is a private earth dam built in 1961 by Robert and Company Associates for the primary purpose of recreation.


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Summary

The dam stands at a height of 60 feet and stretches 1025 feet in length, creating a reservoir with a normal storage capacity of 5600 acre-feet. The dam is situated on Stone Mountain Creek and is regulated by the Georgia Safe Dams Program, with inspections conducted regularly to ensure its structural integrity.

Despite being classified as having a high hazard potential, Stone Mountain Park Lake Dam has been assessed to be in satisfactory condition as of its last inspection in March 2017. The dam's emergency action plan status, risk assessment, and management measures are currently unlisted. With a drainage area of 9043 acres and a surface area of 392 acres, the dam provides valuable recreational opportunities for the Lake Norris Community and visitors to Stone Mountain Park. It is essential to monitor and maintain the dam to ensure the safety of the surrounding area and the preservation of its ecological and recreational value.

Year Completed

1961

Dam Length

1025

Dam Height

60

River Or Stream

Stone Mountain Creek

Primary Dam Type

Earth

Surface Area

392

Drainage Area

9043

Nid Storage

8470

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

60
       
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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.