Cobblestone Lake Dam Reservoir Report

Last Updated: December 13, 2025

Located in Rocky Face, Georgia, Cobblestone Lake Dam was completed in 1950 and serves as a recreational spot for water resource and climate enthusiasts.


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Summary

This private dam, primarily designed for recreation, stands at a height of 16.2 feet with a hydraulic height of 12 feet and a length of 450 feet. With a storage capacity of 87 acre-feet, the dam offers a serene surface area of 12 acres for visitors to enjoy.

Although not regulated by the state, Cobblestone Lake Dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite being uncontrolled, the spillway type and outlet gates maintain the safety and functionality of the dam. With its moderate risk assessment rating of 3, the dam ensures the well-being of the surrounding community and environment. Whether it's for fishing, boating, or simply enjoying the picturesque views, Cobblestone Lake Dam provides a peaceful retreat for all water enthusiasts to appreciate.

Year Completed

1950

Dam Length

450

Dam Height

16.2

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

12

Nid Storage

87

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

16
       
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.