Williams Lake Dam Reservoir Report
Nearby: Eva K. Williams Winding Lake Dam
Last Updated: December 5, 2025
Williams Lake Dam, located in Mulberry Grove, Georgia, is a privately owned earth dam primarily used for recreation.
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Summary
Built in 1930, the dam stands at a height of 42 feet and has a hydraulic height of 39.4 feet. The reservoir created by the dam has a normal storage capacity of 1120 acre-feet and covers a surface area of 64 acres. Despite being unlisted for its foundations, the dam is classified as a buttress-type structure with an uncontrolled spillway.
With a low hazard potential and a moderate risk assessment rating of 3, Williams Lake Dam has not been rated for its current condition. However, it undergoes inspections every five years, with the last one conducted in February 2020. The dam's emergency action plan status, inundation maps, and risk management measures are currently unlisted. The dam is not regulated by the state but falls under the jurisdiction of Georgia, with Congressman Sanford D. Bishop Jr. representing the area.
Water resource and climate enthusiasts visiting Williams Lake Dam can appreciate its historical significance as a recreational spot in Harris County, Georgia. The dam, with its serene reservoir and surrounding landscape, offers a peaceful retreat for outdoor activities such as fishing, boating, and wildlife observation. The dam's engineering design, unknown designer, and earth construction type add to its allure as a unique feature in the Savannah District. Despite its age, Williams Lake Dam continues to serve its purpose while maintaining a moderate risk level, making it an intriguing site for exploration and study.
Year Completed |
1930 |
Dam Length |
620 |
Dam Height |
42 |
River Or Stream |
Name unknown |
Primary Dam Type |
Earth |
Surface Area |
64 |
Hydraulic Height |
39.4 |
Nid Storage |
1432.4 |
Structural Height |
39.4 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
42 |
Seasonal Comparison
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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.
Williams Lake Dam