Wyboo Plantation Dam Reservoir Report

Last Updated: December 13, 2025

Wyboo Plantation Dam, located in Clarendon, South Carolina, was completed in 1960 and serves primarily for recreational purposes.


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Summary

The earth dam, standing at 15 feet high and 165 feet long, impounds water from the Three Hole Swamp, creating a serene 42-acre surface area for activities such as fishing, boating, and wildlife observation. Despite its low hazard potential, the dam's poor condition assessment in 2017 raises concerns about its long-term safety and maintenance.

Managed by a private owner, Wyboo Plantation Dam is regulated by the South Carolina Department of Health and Environmental Control (DHEC) and undergoes regular inspections to ensure compliance with state regulations. The dam's normal storage capacity of 185 acre-feet provides ample water resources for recreational use, although its maximum storage of 383 acre-feet indicates some potential for flood risk. With a moderate risk rating and a history of poor condition, stakeholders may need to consider investing in necessary repairs and maintenance to ensure the dam's continued safety and functionality for water resource and climate enthusiasts in the region.

Year Completed

1960

Dam Length

165

Dam Height

15

River Or Stream

THREE HOLE SWAMP

Primary Dam Type

Earth

Surface Area

42

Nid Storage

383

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

15
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.