Jeff Efird Dam Reservoir Report
Last Updated: December 16, 2025
Jeff Efird Dam, located in Chester, South Carolina, was completed in 1988 by the USDA NRCS and is privately owned.
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Summary
This earth dam stands at 25 feet high, with a length of 450 feet and a storage capacity of 96 acre-feet. It serves multiple purposes, including recreation and other uses, and is regulated by the South Carolina Department of Health and Environmental Control.
With a poor condition assessment as of October 2017, the dam has a low hazard potential but a moderate risk level. While it has uncontrolled spillways and outlet gates, inspections are conducted every five years to ensure its safety. The dam poses a moderate risk due to its condition and potential consequences of failure, highlighting the importance of ongoing monitoring and maintenance efforts.
Despite its current condition, Jeff Efird Dam remains a key structure along TR-Mobley Creek, offering recreational opportunities and contributing to local water resource management. As water resource and climate enthusiasts, it is crucial to stay informed about the status of such dams to support their preservation and safety for both environmental and community well-being.
Year Completed |
1988 |
Dam Length |
450 |
Dam Height |
25 |
River Or Stream |
TR-MOBLEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
12 |
Nid Storage |
96 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Broad River Near Carlisle
|
1340cfs |
Fishing Creek Below Fort Lawn
|
30cfs |
Rocky Creek At Great Falls
|
12cfs |
Tyger River Near Delta
|
343cfs |
Enoree River At Whitmire
|
203cfs |
Wildcat Creek Below Rock Hill
|
2cfs |
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.
Jeff Efird Dam