Oak Grove Lake Dam Reservoir Report

Last Updated: December 5, 2025

The Oak Grove Lake Dam, located in Greenville, South Carolina, serves as a vital structure for recreational purposes.


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Summary

Built in 1949, this earth dam stands at a height of 29 feet and stretches across a length of 275 feet, with a storage capacity of 340 acre-feet. The dam is situated on the TR-Rocky Creek, under the jurisdiction of the South Carolina Department of Health and Environmental Control (DHEC).

With a hazard potential rated as high and a fair condition assessment from the last inspection in September 2019, the Oak Grove Lake Dam is closely monitored and regulated by state authorities. Despite its age, the dam continues to provide essential services for the surrounding community, offering a serene lake for outdoor activities. The dam's emergency action plan (EAP) status and risk assessment measures are currently under review to ensure the safety of the area in case of any unforeseen events.

As a key component in the region's water resource management, the Oak Grove Lake Dam exemplifies the importance of infrastructure maintenance and monitoring in the face of changing climate conditions. Its role in providing recreational opportunities while safeguarding against potential hazards underscores the significance of sustainable practices and effective risk management strategies for water resource and climate enthusiasts alike.

Year Completed

1949

Dam Length

275

Dam Height

29

River Or Stream

TR-ROCKY CREEK

Primary Dam Type

Earth

Surface Area

18

Nid Storage

340

Hazard Potential

High

Foundations

Soil

Nid Height

29
       
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.