Spalding Lake Dam Reservoir Report

Last Updated: December 5, 2025

Spalding Lake Dam, located in Roswell, Georgia, is a private-owned structure primarily used for recreational purposes.


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Summary

This earth dam, with a height of 25.3 feet and a hydraulic height of 23.4 feet, stands as a buttress type that spans 120 feet in length. While its hazard potential is classified as low, the risk assessment indicates a moderate level of risk, suggesting a need for cautious monitoring and management.

Despite not being state-regulated, Spalding Lake Dam undergoes inspections every five years, with the last inspection conducted in June 2017. The dam features uncontrolled spillways and outlet gates, emphasizing the importance of emergency preparedness and risk mitigation measures. With a maximum storage capacity of 34 acre-feet and a normal storage level of 25 acre-feet, the dam covers a surface area of 2.5 acres, contributing to the recreational landscape of the area.

As climate change continues to impact water resources and infrastructure, enthusiasts and stakeholders interested in water management and climate resilience can find Spalding Lake Dam as a focal point for monitoring and assessing the intersection of recreational usage and safety regulations. With a focus on risk management and emergency preparedness, this dam serves as a case study for balancing recreational benefits with the need for sustainable and resilient water resource management in the face of changing environmental conditions.

Dam Length

120

Dam Height

25.3

River Or Stream

unknown

Primary Dam Type

Earth

Surface Area

2.5

Hydraulic Height

23.4

Nid Storage

34

Structural Height

23.4

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.