Hidden Lake Dam Reservoir Report
Last Updated: December 5, 2025
Hidden Lake Dam, located in Washington, Georgia, is a private-owned structure with a low hazard potential and moderate risk assessment.
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Summary
This earth dam, with a height of 27 feet and a length of 500 feet, serves the primary purpose of water storage, with a normal storage capacity of 476 acre-feet. The dam's spillway type is uncontrolled, and it has an uncontrolled outlet gate.
Despite not being regulated by the state, Hidden Lake Dam undergoes inspections every five years, with the last inspection conducted in 2003. The dam is not currently rated for its condition, but it meets safety guidelines and has emergency action plans in place. With a risk management assessment of moderate, Hidden Lake Dam provides essential water storage for the area while maintaining a low hazard potential. Enthusiasts of water resources and climate will appreciate the significance of this structure in managing water resources in Georgia.
Dam Length |
500 |
Dam Height |
27 |
Primary Dam Type |
Earth |
Surface Area |
35 |
Nid Storage |
544 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Buffalo Creek At Ga 272
|
145cfs |
Williamson Swamp Creek At Davisboro
|
83cfs |
Oconee River At Avant Mine
|
846cfs |
Oconee River Near Oconee
|
1430cfs |
Oconee River At Milledgeville
|
635cfs |
Oconee River At Dublin
|
2420cfs |
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.
Hidden Lake Dam