Jefferson Reservoir Dam Reservoir Report
Nearby: Mcleod Pond Dam Evans/Miller Dam
Last Updated: December 5, 2025
Located in Chesterfield, South Carolina, the Jefferson Reservoir Dam stands as a vital private water supply structure on Fork Creek.
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Summary
Completed in 1995, this earth dam reaches a height of 25 feet and spans a length of 800 feet, with a storage capacity of 1100 acre-feet. The reservoir serves as a key source of water for the surrounding area, with a normal storage level of 573 acre-feet and a surface area of 60 acres.
Despite its fair condition assessment and significant hazard potential, the Jefferson Reservoir Dam remains under state regulation and inspection by the South Carolina Department of Health and Environmental Control. The last inspection in April 2020 deemed the structure to be in satisfactory condition, with a mandated inspection frequency of every three years. The dam's emergency action plan was last revised in 1998, highlighting the importance of ongoing monitoring and risk management for this crucial water resource infrastructure.
Water resource and climate enthusiasts will find the Jefferson Reservoir Dam to be a compelling example of private ownership in water supply infrastructure. With its strategic location in South Carolina and reliance on Fork Creek, this earth dam serves as a critical component of the region's water management system. As the dam continues to be regulated, inspected, and maintained, it underscores the importance of proactive risk assessment and emergency preparedness in safeguarding water resources for the community.
Year Completed |
1995 |
Dam Length |
800 |
Dam Height |
25 |
River Or Stream |
FORK CREEK |
Primary Dam Type |
Earth |
Surface Area |
60 |
Nid Storage |
1100 |
Hazard Potential |
Significant |
Foundations |
Rock |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black Creek Near Mcbee
|
108cfs |
Black Creek Near Hartsville
|
121cfs |
Waxhaw Creek At Sr1103 Near Jackson
|
1cfs |
Lynches River Near Bishopville
|
443cfs |
Catawba River Below Catawba
|
2260cfs |
Fishing Creek Below Fort Lawn
|
75cfs |
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.
Jefferson Reservoir Dam