Timberchase Sub Dam Reservoir Report
Last Updated: December 6, 2025
Timberchase Sub Dam, located in Darlington, South Carolina, was completed in 1995 and stands at a height of 25 feet with a length of 575 feet.
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Summary
The primary purpose of this earth dam is flood risk reduction, although it also serves for recreation and other purposes. With a maximum storage capacity of 54 acre-feet and normal storage of 25 acre-feet, the dam spans across the TR-SPRING BRANCH river or stream.
Despite its low hazard potential, Timberchase Sub Dam's condition assessment is rated as poor, with the last inspection in November 2017. The dam is state-regulated and inspected, with enforcement and permitting also under state jurisdiction. With a risk assessment rating of moderate, it is crucial for water resource and climate enthusiasts to monitor the condition of Timberchase Sub Dam to ensure its continued effectiveness in flood risk reduction and the protection of the surrounding area.
Year Completed |
1995 |
Dam Length |
575 |
Dam Height |
25 |
River Or Stream |
TR-SPRING BRANCH |
Primary Dam Type |
Earth |
Surface Area |
5 |
Nid Storage |
54 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black Creek Near Hartsville
|
142cfs |
Black Creek Near Mcbee
|
128cfs |
Lynches River Near Bishopville
|
425cfs |
Pee Dee River Nr Bennettsville
|
2500cfs |
Black Creek Near Quinby
|
376cfs |
Lynches River At Effingham
|
852cfs |
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.
Timberchase Sub Dam