Mill Glen Lake Dam Reservoir Report

Last Updated: December 6, 2025

Mill Glen Lake Dam, located in Douglasville, Georgia, is a privately owned structure primarily used for recreation.


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Summary

This earth dam, with a height of 29.9 feet and a length of 487 feet, serves to create a lake with a storage capacity of 60 acre-feet and a surface area of 5.5 acres. Despite its recreational purpose, the dam poses a high hazard potential and has been rated in poor condition.

The dam is regulated by the Georgia Safe Dams Program and undergoes regular inspections, with the last assessment conducted in February 2019. The risk assessment for Mill Glen Lake Dam indicates a moderate level of risk, with measures for risk management yet to be specified. With its uncontrolled spillway and outlet gates, the dam's condition raises concerns for the safety of the surrounding area and calls for timely maintenance and potential upgrades to mitigate the identified risks.

For water resource and climate enthusiasts, Mill Glen Lake Dam presents an intriguing case study of a privately owned recreational structure with significant implications for dam safety and risk management. As a focal point for potential environmental impact, the dam's condition assessment and hazard potential underscore the importance of proactive maintenance and regulatory oversight to ensure the safety and sustainability of this water resource in Douglasville, Georgia.

Dam Length

487

Dam Height

29.9

River Or Stream

Unknown

Primary Dam Type

Earth

Surface Area

5.5

Drainage Area

150

Nid Storage

60

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

30
       
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.