Mack Millings Lake Dam Reservoir Report
Last Updated: December 14, 2025
Mack Millings Lake Dam, located in Colquitt, Georgia, is a privately owned structure primarily used for irrigation purposes.
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Summary
This earth dam, with a height of 18.5 feet, was designed by NRCS and has a storage capacity of 287 acre-feet. The dam, completed at an unspecified year, has a spillway type of uncontrolled and features uncontrolled outlet gates.
Despite being classified as having a low hazard potential, Mack Millings Lake Dam has a moderate risk assessment rating. The condition assessment of the dam is listed as "Not Rated", and it undergoes inspections every 5 years. While the dam meets state jurisdiction requirements and is inspected by state authorities, it is not regulated by the state. With a risk management plan in place, the dam is equipped to handle any potential emergencies that may arise.
Dam Length |
550 |
Dam Height |
18.5 |
Primary Dam Type |
Earth |
Surface Area |
20 |
Hydraulic Height |
18.5 |
Nid Storage |
287 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Ochlockonee River Near Thomasville
|
57cfs |
Flint River At Newton
|
2450cfs |
Little River Near Adel
|
36cfs |
Ichawaynochaway Creek Below Newton
|
512cfs |
Flint River At Riverview Plantation Nr Hopeful
|
3100cfs |
Okapilco Creek At Ga 33
|
14cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Mack Millings Lake Dam