Stone Mountain Park Dam-North Reservoir Report

Last Updated: December 5, 2025

Stone Mountain Park Dam-North, located in DeKalb, Georgia, is a privately owned earth dam that was completed in 1965 for recreational purposes.


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Summary

The dam stands at a height of 27 feet with a hydraulic height of 21 feet, creating a reservoir with a storage capacity of 112 acre-feet. The dam spans a length of 395 feet and impounds Stone Mountain Creek, covering a surface area of 6 acres within a drainage area of 19 square miles.

Despite being classified as low hazard potential, Stone Mountain Park Dam-North has a moderate risk assessment due to its aging infrastructure and lack of recent condition assessments. With the last inspection conducted in 2005 and no formal emergency action plan in place, there are concerns about the dam's ability to withstand potential flooding events. While the dam is not regulated by the state, it is subject to periodic inspections to ensure its structural integrity and public safety. Despite its risks, the dam continues to provide recreational opportunities for visitors to Stone Mountain Park and remains a key feature in the surrounding environment.

Year Completed

1965

Dam Length

395

Dam Height

27

River Or Stream

STONE MOUNTAIN CREEK

Primary Dam Type

Earth

Surface Area

6

Hydraulic Height

21

Drainage Area

19

Nid Storage

112

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

27
       
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.