Norris Dam
Key Takeaway
Norris Dam is classified as high hazard in Tennessee. It was completed in 1936 and is 90 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 | 236 ft (taller than 96% in TN) |
| Dam Length | 1,860 ft |
| Dam Type | Concrete |
| Max Storage | 3.4M acre-ft |
| Normal Storage | 2.0M acre-ft |
| Surface Area | 34,000 acres |
| Drainage Area | 2,912 sq mi |
| Max Discharge | 250,000 cfs |
| Year Completed | 1936 (90 years old) |
| NID ID | TN01302 |
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 Norris Dam?
Norris 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 Norris Dam?
Norris Dam is owned by TVA (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Norris Dam built?
Norris Dam was completed in 1936, making it 90 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 Norris Dam?
Norris Dam serves the following purposes: Flood Risk Reduction, Recreation, Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Norris Dam?
Norris Dam has a dam height of 236 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 Norris Dam last inspected?
Norris Dam was last inspected on September 22, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.