James E. Quarles Wtp Dam Reservoir Report

Last Updated: December 5, 2025

The James E.


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Summary

Quarles Wtp Dam, also known as the James Quarles Raw Water Reservoir, is a vital water supply infrastructure located in Cobb, Georgia. Built in 1953, this earth dam stands at a height of 29.6 feet and has a maximum storage capacity of 74 acre-feet. The dam serves as a crucial resource for the city of Sandy Springs, providing a normal storage capacity of 60 acre-feet and covering a surface area of 7 acres.

Managed by the local government, the James E. Quarles Wtp Dam is regulated by the GA-SAFE DAMS PROGRAM and undergoes regular inspections to ensure its structural integrity. Despite being classified as having a high hazard potential, the dam's condition assessment remains satisfactory. While the risk assessment indicates a moderate level of risk, appropriate risk management measures are in place to mitigate any potential hazards. With its primary purpose being water supply, this dam plays a crucial role in safeguarding the region's water resources and supporting the community's needs.

For water resource and climate enthusiasts, the James E. Quarles Wtp Dam stands as a testament to the importance of sustainable water management practices. As a key component of the region's infrastructure, this dam exemplifies the intersection of engineering excellence and environmental stewardship. Its role in ensuring a reliable water supply for Sandy Springs underscores the critical need for resilient infrastructure in the face of climate change and increasing water scarcity. The ongoing maintenance and regulation of the dam serve as a model for responsible water resource management, emphasizing the significance of safeguarding our water sources for future generations.

Year Completed

1953

Dam Length

2500

Dam Height

29.6

River Or Stream

NONE

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

15

Nid Storage

74

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

30
       
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.