Cobb Lake Dam Reservoir Report

Last Updated: December 5, 2025

Cobb Lake Dam, located in Colquitt, Georgia, serves as a crucial irrigation resource for the region.


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Summary

Built in 1966, this private dam stands at a height of 12.2 meters and has a storage capacity of 240 acre-feet. With a primary purpose of irrigation, the dam plays a vital role in supporting agriculture in the area.

Despite its age, Cobb Lake Dam has a low hazard potential 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 last inspection was conducted in 2010, the dam remains operational and meets the necessary safety guidelines for its current usage.

Water resource and climate enthusiasts will find Cobb Lake Dam an intriguing structure with its earth dam type and buttress core design. As a key player in the irrigation infrastructure of Colquitt, Georgia, the dam continues to provide essential water resources to support agricultural activities in the region. With its moderate risk assessment and low hazard potential, Cobb Lake Dam stands as a reliable and vital component of the local water management system.

Year Completed

1966

Dam Length

720

Dam Height

12.2

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

30

Hydraulic Height

11.6

Nid Storage

240

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

12
       
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.