Conestee Lake Dam Reservoir Report
Last Updated: December 6, 2025
Conestee Lake Dam, located in Greenville, South Carolina, is a historic masonry dam built in 1812 with a primary purpose of flood risk reduction along the TR-Reedy River.
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Summary
Standing at a height of 28 feet and a length of 1100 feet, the dam stores 710 acre-feet of water with a normal storage capacity of 600 acre-feet. Despite its age, the dam remains state-regulated and is subject to regular inspections by the South Carolina Department of Health and Environmental Control (SC DHEC).
The condition assessment of Conestee Lake Dam is rated as poor, indicating the need for maintenance and potential repairs to ensure its structural integrity and continued flood risk reduction capabilities. With a significant hazard potential, the dam's emergency action plan (EAP) is yet to be prepared or updated, raising concerns about the response readiness in case of a dam failure or emergency situation. The area surrounding the dam covers a surface area of 93 acres, making it a critical infrastructure for water resource management in the region.
As a vital component of the flood risk reduction infrastructure in the area, Conestee Lake Dam serves as a key protective structure against potential flooding events along the TR-Reedy River. However, its poor condition assessment and significant hazard potential highlight the importance of ongoing monitoring, maintenance, and potential upgrades to ensure the safety and effectiveness of the dam in safeguarding the community and environment from flood risks. The collaboration between state regulatory agencies, dam owners, and local stakeholders is crucial in ensuring the long-term resilience and functionality of Conestee Lake Dam for the benefit of all water resource and climate enthusiasts in the region.
Year Completed |
1812 |
Dam Length |
1100 |
Dam Height |
28 |
River Or Stream |
TR-REEDY RIVER |
Primary Dam Type |
Masonry |
Surface Area |
93 |
Nid Storage |
710 |
Hazard Potential |
Significant |
Foundations |
Rock |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
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