Forty Niner Lake Dam Reservoir Report
Nearby: Dysart Lake Dam Mccarter Pond Dam
Last Updated: December 6, 2025
Nestled in the picturesque Greenville, South Carolina, Forty Niner Lake Dam stands as a testament to engineering excellence and environmental stewardship.
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Summary
Built in 1960, this private dam serves primarily for recreational purposes, offering a serene oasis for water resource and climate enthusiasts to enjoy. With a structural height of 43 feet and a length of 486 feet, the dam holds a maximum storage capacity of 83 acre-feet, providing a tranquil surface area of 5 acres for visitors to explore.
Despite its low hazard potential, the dam's condition assessment reflects a poor rating, signaling the need for maintenance and potential improvements to ensure its long-term safety and functionality. The South Carolina Department of Health and Environmental Control (SC DHEC) oversees the state regulation, permitting, inspection, and enforcement of Forty Niner Lake Dam, demonstrating a commitment to preserving water resources and safeguarding the surrounding community. With William R. Timmons IV representing the area in Congress, there is a strong emphasis on environmental conservation and responsible water management, highlighting the importance of sustainable practices in maintaining this vital infrastructure.
As water resource management becomes increasingly crucial in the face of climate change, Forty Niner Lake Dam serves as a valuable asset in providing recreational opportunities while also serving as a reminder of the ongoing need for proactive maintenance and risk management. With a moderate risk assessment rating and a history dating back to the mid-20th century, this earth dam on the TR-MEADOW FORK stream stands as a testament to the intersection of human ingenuity and environmental responsibility, inviting visitors to appreciate the beauty of nature while also recognizing the importance of preserving and protecting our water resources for future generations.
Year Completed |
1960 |
Dam Length |
486 |
Dam Height |
43 |
River Or Stream |
TR-MEADOW FORK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Nid Storage |
83 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
43 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Forty Niner Lake Dam
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