Snowden Pond Dam Reservoir Report
Nearby: Louise Ervin Dam Brown Dam
Last Updated: December 15, 2025
Snowden Pond Dam, also known as Percy Snowden Dam, is a privately owned structure located in Williamsburg, South Carolina.
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Summary
Completed in 1952, this earth dam stands at a height of 8 feet and spans a length of 800 feet, creating a reservoir with a maximum storage capacity of 61 acre-feet. The primary purpose of this dam is for irrigation, but it also serves recreational activities in the area.
Despite its low hazard potential, Snowden Pond Dam is currently in poor condition, as indicated by a 2017 inspection. The dam is regulated by the South Carolina Department of Health and Environmental Control (SC DHEC), with regular inspections and enforcement in place. While the risk assessment is moderate, with a score of 3, there is no Emergency Action Plan (EAP) prepared for this structure, raising concerns about emergency preparedness in case of a failure.
Water resource and climate enthusiasts interested in Snowden Pond Dam will find its history and current state of maintenance intriguing. As a vital irrigation resource in the region, the dam's condition warrants attention to ensure its continued functionality and safety. With its proximity to the TR-INDIANTOWN SWAMP, monitoring and potential upgrades may be necessary to mitigate any risks associated with its poor condition and lack of an EAP.
Year Completed |
1952 |
Dam Length |
800 |
Dam Height |
8 |
River Or Stream |
TR-INDIANTOWN SWAMP |
Primary Dam Type |
Earth |
Surface Area |
8 |
Nid Storage |
61 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black River At Kingstree
|
1180cfs |
Pee Dee River At Hwy 701 Nr Bucksport
|
7960cfs |
Lynches River At Effingham
|
516cfs |
Little Pee Dee R. At Galivants Ferry
|
2190cfs |
Waccamaw River At Conway Marina At Conway
|
2260cfs |
Turkey Creek Near Maryville
|
2cfs |
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.
Snowden Pond Dam