Upper Williams Lake Dam Reservoir Report
Last Updated: December 8, 2025
Upper Williams Lake Dam, also known as North Williams Lake Dam, is a private earth dam located in Marion, Georgia.
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Summary
Built in 1955, this recreational dam stands at a height of 20.9 feet and has a storage capacity of 87 acre-feet. With a spillway type categorized as uncontrolled, the dam serves primarily for recreational purposes and has a low hazard potential.
Situated in the Mobile District, Upper Williams Lake Dam is not regulated by the state and has not been inspected or rated for its condition. Despite its moderate risk assessment, the dam does not have an Emergency Action Plan prepared or regularly updated. The dam's moderate risk level is attributed to its uncontrolled spillway and lack of state inspections and enforcement, highlighting the importance of monitoring and maintaining this structure for the safety of the surrounding area and water resources.
As an earth dam with a buttress core type, Upper Williams Lake Dam plays a crucial role in providing recreational opportunities while also posing a moderate risk to its surroundings. Given its location in a private area and the absence of state oversight, there is a need for increased attention to the monitoring and maintenance of this dam to ensure the safety of the community and the preservation of water resources in the region.
Year Completed |
1955 |
Dam Length |
405 |
Dam Height |
20.9 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
7.9 |
Hydraulic Height |
18.2 |
Drainage Area |
402 |
Nid Storage |
87 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Upatoi Creek Near Columbus
|
242cfs |
Flint River Near Culloden
|
978cfs |
Chattahoochee River At Us 280
|
1990cfs |
Uchee Creek Near Fort Mitchell
|
105cfs |
Flint River At Ga 26
|
2210cfs |
Kinchafoonee Creek At Preston
|
199cfs |
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.
Upper Williams Lake Dam