Demott Lake Dam South Reservoir Report

Last Updated: December 6, 2025

Demott Lake Dam South in Colquitt, Georgia, is a privately owned structure primarily used for fire protection, stock, and small fish pond purposes.


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Summary

This earth dam, completed in 1960, stands at a height of 10.8 feet with a hydraulic height of 11 feet, containing a maximum storage capacity of 90 acre-feet. The dam spans 470 feet in length and covers a surface area of 12 acres, serving a drainage area of 615 acres.

While the dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment, it falls under moderate risk categorization. The last inspection took place in April 2010, with no information on the inspection frequency provided. The structure features an uncontrolled spillway and outlet gates, with no associated locks. The risk management measures, emergency action plan, and inundation maps for the dam are not detailed in the available data, leaving some aspects of its operational and safety protocols unclear for water resource and climate enthusiasts.

Located within the jurisdiction of the Mobile District of the US Army Corps of Engineers, Demott Lake Dam South offers a unique glimpse into the intersection of private ownership and public regulation in managing water resources. Despite its modest size and purpose, the dam plays a crucial role in local fire protection and wildlife support, highlighting the diverse functions that such structures can serve in maintaining environmental balance and community safety.

Year Completed

1960

Dam Length

470

Dam Height

10.8

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

11

Drainage Area

615

Nid Storage

90

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

11
       
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.