H C Harper Pond Dam Reservoir Report

Last Updated: December 5, 2025

H C Harper Pond Dam, also known as Harpers Folly Lake Dam, is a private earth dam located in Greenville, South Carolina.


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Summary

Built in 1973 by the USDA NRCS, this dam serves a primary purpose of recreation and stands at a height of 40 feet with a length of 784 feet. The dam has a storage capacity of 998 acre-feet and a surface area of 52 acres, making it a significant water resource in the area.

Managed by the South Carolina Department of Health and Environmental Control, H C Harper Pond Dam is state-regulated and undergoes regular inspections to ensure its safety. Despite being classified as having a high hazard potential, the dam is currently in fair condition and meets moderate risk assessments. With its uncontrolled spillway and outlet gates, the dam provides essential water management for the Long Branch river or stream and offers recreational opportunities for the local community.

Overall, H C Harper Pond Dam is a vital infrastructure for water resource management and climate enthusiasts in the region. Its historical significance, engineering design, and regulatory oversight make it a noteworthy destination for those interested in the intersection of water conservation, recreational activities, and dam safety.

Year Completed

1973

Dam Length

784

Dam Height

40

River Or Stream

LONG BRANCH

Primary Dam Type

Earth

Surface Area

52

Nid Storage

998

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

40
       
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.