Entrance Lake Dam Reservoir Report
Last Updated: December 14, 2025
Entrance Lake Dam, located in Richland, South Carolina, is a privately-owned structure that serves the primary purpose of recreation.
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Summary
Built in 1969, this earth dam stands at a height of 22 feet and has a length of 420 feet, with a storage capacity of 111.5 acre-feet. The dam's normal storage level is 43.7 acre-feet, providing a surface area of 6.7 acres for recreational activities such as fishing, boating, and wildlife observation.
Managed by the South Carolina Department of Health and Environmental Control (DHEC), Entrance Lake Dam is inspected regularly to ensure its safety and functionality. The dam has been assessed to have a fair condition, with a high hazard potential due to its location near the TR-Little Jackson Creek. The last inspection in January 2021 confirmed its overall stability, but maintenance and risk management measures are continuously monitored to mitigate any potential threats.
Despite its fair condition, Entrance Lake Dam remains a popular spot for outdoor enthusiasts seeking a tranquil setting for recreational activities. With its picturesque surroundings and ample storage capacity, the dam provides a valuable water resource for the local community while also offering a safe and enjoyable environment for visitors to enjoy the natural beauty of South Carolina's landscape.
Year Completed |
1969 |
Dam Length |
420 |
Dam Height |
22 |
River Or Stream |
TR-LITTLE JACKSON CREEK |
Primary Dam Type |
Earth |
Surface Area |
6.7 |
Nid Storage |
111.5 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
22 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Gills Creek At Columbia
|
37cfs |
Smith Branch At North Main St At Columbia
|
3cfs |
Congaree River At Columbia
|
3140cfs |
Saluda River Near Columbia
|
907cfs |
Saluda River Below Lk Murray Dam Nr Columbia
|
775cfs |
Wateree River Nr. Camden
|
1570cfs |
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.
Entrance Lake Dam