J W Yonce Pond Dam Reservoir Report
Nearby: J O Clark Dam Charlie Rauton Dam
Last Updated: December 5, 2025
J W Yonce Pond Dam, located in Edgefield, South Carolina, is a privately owned earth dam completed in 1950 primarily for irrigation purposes.
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Summary
The dam stands at 19 feet high and spans 400 feet in length, with a storage capacity of 66 acre-feet. Despite its modest size, the dam holds significant hazard potential, as indicated by its poor condition assessment and the need for frequent inspections every three years.
Managed by the South Carolina Department of Health and Environmental Control, the dam is situated on TR-TEMPLES CREEK and falls under state jurisdiction for regulation, permitting, inspection, and enforcement. The last inspection in December 2019 revealed the dam's deteriorating condition, prompting concerns about its safety and the potential risks it poses. With no emergency action plan in place and a lack of updated risk assessment measures, the dam's management and maintenance are critical issues that require immediate attention to ensure the safety of the surrounding community and water resources.
As water resource and climate enthusiasts, the significance of J W Yonce Pond Dam goes beyond its functional purpose for irrigation. It serves as a vital infrastructure that requires proactive measures to mitigate risks, enhance safety protocols, and prioritize maintenance efforts. With its location in a state with a history of flooding and water management challenges, the dam's condition and regulatory oversight are essential factors in safeguarding the local ecosystem, water supply, and surrounding communities from potential disasters.
Year Completed |
1950 |
Dam Length |
400 |
Dam Height |
19 |
River Or Stream |
TR-TEMPLES CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Nid Storage |
66 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Mctier Creek (Rd 209) Near Monetta
|
20cfs |
Saluda River At Chappells
|
1220cfs |
Lake Greenwood Tailrace Nr Chappells
|
1090cfs |
Bush River Nr Prosperity
|
58cfs |
Stevens Creek Near Modoc
|
149cfs |
Augusta Canal Nr Augusta (Upper)
|
2080cfs |
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.
J W Yonce Pond Dam