Woodhaven Sub Dam 6 Reservoir Report

Last Updated: December 5, 2025

Woodhaven Sub Dam 6, located in McCormick, South Carolina, is a private dam primarily used for recreation purposes.


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Summary

Completed in 1988, this earth dam stands at a height of 31 feet and has a length of 300 feet, providing a storage capacity of 38 acre-feet. The dam overlooks the TR-RYAN BRANCH river/stream and is regulated by the South Carolina Department of Health and Environmental Control (SC DHEC).

Despite its low hazard potential, Woodhaven Sub Dam 6 has been assessed to be in poor condition as of October 2017. With a moderate risk rating, the dam requires regular inspections, which are conducted every 5 years to ensure its safety and structural integrity. While the dam has an uncontrolled spillway type, the risk management measures and emergency preparedness plans for this structure are currently unspecified.

For water resource and climate enthusiasts, the Woodhaven Sub Dam 6 presents an interesting case study of a privately owned recreational dam in South Carolina. With its unique design features and historical significance, this dam serves as a vital component of the local landscape and water management infrastructure, highlighting the importance of regular maintenance and risk assessment for ensuring public safety and environmental sustainability.

Year Completed

1988

Dam Length

300

Dam Height

31

River Or Stream

TR-RYAN BRANCH

Primary Dam Type

Earth

Surface Area

3

Nid Storage

38

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

31
       
Seasonal Comparison

Weather Forecast

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.