South Holston Dam
Key Takeaway
South Holston Dam is classified as high hazard in Tennessee. It was completed in 1950 and is 76 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 285 ft (taller than 97.3% in TN) |
| Dam Length | 1,600 ft |
| Dam Type | Rockfill |
| Max Storage | 890.4K acre-ft |
| Normal Storage | 658.4K acre-ft |
| Surface Area | 7,600 acres |
| Drainage Area | 703 sq mi |
| Max Discharge | 114,000 cfs |
| Year Completed | 1950 (76 years old) |
| NID ID | TN16305 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
TVA
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of South Holston Dam?
South Holston Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates South Holston Dam?
South Holston Dam is owned by TVA (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Holston Dam built?
South Holston Dam was completed in 1950, making it 76 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of South Holston Dam?
South Holston Dam serves the following purposes: Flood Risk Reduction, Recreation, Hydroelectric, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is South Holston Dam?
South Holston Dam has a dam height of 285 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was South Holston Dam last inspected?
South Holston Dam was last inspected on October 14, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.