Ah Parsons Pond Dam Reservoir Report
Last Updated: December 15, 2025
Ah Parsons Pond Dam, also known as Rebecca Parsons Dam, is a private structure located in Williamsburg, South Carolina, along the TR-BLACK RIVER.
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Summary
Built in 1954, this earth dam stands at a height of 8 feet and spans 575 feet in length, with a storage capacity of 74 acre-feet. While primarily used for recreation, it is also regulated by the SC DHEC and undergoes regular inspections to ensure its safety and compliance with state regulations.
Despite its low hazard potential, the dam's condition has been assessed as poor during its last inspection in 2017. With a maximum storage capacity of 74 acre-feet and a normal storage of 24 acre-feet, the dam poses a potential risk that must be managed effectively. While it currently lacks an Emergency Action Plan (EAP) and other risk management measures, the dam is closely monitored and inspected every five years to mitigate any potential dangers.
Located within the jurisdiction of the state and owned privately, Ah Parsons Pond Dam serves as a recreational resource for the community. With its unique design and historical significance, this dam on the TR-BLACK RIVER is a valuable asset that requires ongoing maintenance and risk assessment to ensure the safety of both the structure and the surrounding area.
Year Completed |
1954 |
Dam Length |
575 |
Dam Height |
8 |
River Or Stream |
TR-BLACK RIVER |
Primary Dam Type |
Earth |
Surface Area |
12 |
Nid Storage |
74 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black River At Kingstree
|
1280cfs |
Santee River Nr Jamestown
|
1170cfs |
Santee River Near Pineville
|
676cfs |
Lake Moultrie Tailrace Canal At Moncks Corner
|
9370cfs |
Turkey Creek Near Maryville
|
2cfs |
Lynches River At Effingham
|
558cfs |
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.
Ah Parsons Pond Dam