John Graham
Key Takeaway
John Graham is classified as high hazard in Tennessee. It was completed in 1981 and is 45 years old. 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 Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 13.8K acre-ft |
| Normal Storage | 6.5K acre-ft |
| Surface Area | 439 acres |
| Drainage Area | 9 sq mi |
| Year Completed | 1981 (45 years old) |
| NID ID | TN11323 |
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
TWRA
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of John Graham?
John Graham 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 John Graham?
John Graham is owned by TWRA (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was John Graham built?
John Graham was completed in 1981, making it 45 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
When was John Graham last inspected?
John Graham was last inspected on January 15, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.