Johnson
Key Takeaway
Johnson is classified as significant hazard in Tennessee. It was completed in 1950 and is 76 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Length | 415 ft |
| Dam Type | Earth |
| Max Storage | 48 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1950 (76 years old) |
| NID ID | TN15767 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
JOHNSON, HARDY, JR.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Johnson?
Johnson is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Johnson?
Johnson is owned by JOHNSON, HARDY, JR. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnson built?
Johnson 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 Johnson?
Johnson serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Johnson last inspected?
Johnson was last inspected on December 7, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.