Johnson Dam
Key Takeaway
Johnson Dam is classified as low hazard in Missouri. It was completed in 2005 and is 21 years old. Its primary use is grade stabilization.
Physical Details
| Dam Height | 29 ft (taller than 59.6% in MO) |
| Dam Length | 482 ft |
| Dam Type | Earth |
| Max Storage | 26 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 330 sq mi |
| Max Discharge | 11 cfs |
| Year Completed | 2005 (21 years old) |
| NID ID | MO51397 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CHARLES JOHNSON
Private
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What is the hazard classification of Johnson Dam?
Johnson Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Johnson Dam?
Johnson Dam is owned by CHARLES JOHNSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnson Dam built?
Johnson Dam was completed in 2005, making it 21 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 Dam?
Johnson Dam serves the following purposes: Grade Stabilization. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Johnson Dam?
Johnson Dam has a dam height of 29 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 Johnson Dam last inspected?
Johnson Dam was last inspected on October 1, 2005. Inspection dates indicate when a formal review occurred, not the results of that inspection.