Winnsboro Reservoir Dam Reservoir Report
Last Updated: December 15, 2025
Winnsboro Reservoir Dam, also known as City of Winnsboro Dam, is a key water resource infrastructure owned by the local government in Fairfield, South Carolina.
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Summary
Completed in 1945, this earth dam stands at a height of 28 feet and stretches 350 feet in length, serving primarily for water supply purposes. Located on the TR-MILL CREEK, the dam has a storage capacity of 408 acre-feet, with a normal storage level of 384 acre-feet and a surface area of 24 acres.
Despite its important role in water supply, Winnsboro Reservoir Dam has been assessed to be in poor condition, with a low hazard potential but moderate risk level. The dam is regulated by the South Carolina Department of Health and Environmental Control (SC DHEC), with regular state inspections and enforcement in place. The last inspection was conducted in April 2017, with a scheduled inspection frequency of every 5 years. While the dam currently has no associated structures or outlet gates, it remains a critical infrastructure for the surrounding community.
With Ralph Norman as the representative for the area, Winnsboro Reservoir Dam plays a vital role in ensuring a stable water supply for the region. As a water resource and climate enthusiast, understanding the significance and condition of infrastructure like this dam is crucial for sustainable water management and environmental conservation efforts in South Carolina.
Year Completed |
1945 |
Dam Length |
350 |
Dam Height |
28 |
River Or Stream |
TR-MILL CREEK |
Primary Dam Type |
Earth |
Surface Area |
24 |
Nid Storage |
408 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Broad River At Alston
|
1810cfs |
Rocky Creek At Great Falls
|
11cfs |
Saluda River Below Lk Murray Dam Nr Columbia
|
775cfs |
Smith Branch At North Main St At Columbia
|
3cfs |
Saluda River Near Columbia
|
907cfs |
Broad River Near Carlisle
|
1320cfs |
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.
Winnsboro Reservoir Dam