Hardage Lake Dam Reservoir Report

Last Updated: December 5, 2025

Hardage Lake Dam in Cobb, Georgia, is a privately-owned earth dam primarily used for recreation purposes.


°F

°F

mph

Wind

%

Humidity

Summary

Standing at a height of 17.7 feet and with a length of 465 feet, the dam holds a storage capacity of 77 acre-feet, with a normal storage level of 51 acre-feet. The dam features an uncontrolled spillway and outlet gates, with a hazard potential rated as low and a moderate risk assessment.

Although the dam is not regulated or inspected by the state, it remains a crucial structure for the surrounding area. Situated in a picturesque location, the dam provides a serene setting for outdoor activities and serves as a popular spot for water resource and climate enthusiasts. While its condition assessment is currently listed as "Not Rated," efforts to ensure the dam's safety and compliance with guidelines are ongoing.

With its tranquil waters and scenic surroundings, Hardage Lake Dam offers a peaceful escape for visitors seeking to connect with nature. As a vital part of the local landscape, the dam stands as a testament to the importance of responsible water resource management and the need for ongoing monitoring and maintenance to ensure its continued safety and functionality in the face of changing climate conditions.

Dam Length

465

Dam Height

17.7

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

7.8

Nid Storage

77

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

18
       
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.