Rose Lake Dam Reservoir Report

Last Updated: December 5, 2025

Rose Lake Dam in Cobb, Georgia, is a privately owned recreational dam managed by the Natural Resources Conservation Service.


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Summary

Standing at a height of 26.6 feet with a hydraulic height of 19 feet, this earth dam serves the primary purpose of providing recreational opportunities for water resource and climate enthusiasts in the area. The dam has a storage capacity of 34 acre-feet and a normal storage level of 25.5 acre-feet, covering a surface area of 3 acres.

Despite its low hazard potential, Rose Lake Dam has not been inspected since September 1997 and is currently rated as "Not Rated" in terms of condition assessment. The dam features an uncontrolled spillway and outlet gates, with a moderate risk assessment rating of 3. While the dam is not regulated by the state and does not have an emergency action plan in place, it remains a popular destination for outdoor activities in the region. For water resource and climate enthusiasts looking to explore the intersection of man-made structures and natural landscapes, Rose Lake Dam offers a unique opportunity to appreciate the beauty and importance of water conservation efforts.

Dam Length

420

Dam Height

26.6

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

19

Nid Storage

34

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.