Clarence Cannon Dam
Key Takeaway
Clarence Cannon Dam is classified as high hazard in Missouri. It was completed in 1983 and is 43 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 | 138 ft (taller than 99.8% in MO) |
| Dam Length | 1,940 ft |
| Dam Type | Concrete |
| Max Storage | 1.9M acre-ft |
| Normal Storage | 520.7K acre-ft |
| Surface Area | 5,900 acres |
| Drainage Area | 2,318 sq mi |
| Max Discharge | 276,500 cfs |
| Year Completed | 1983 (43 years old) |
| NID ID | MO82201 |
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
USACE - St. Louis District
Federal Government
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High Hazard 13 ftFrequently Asked Questions
What is the hazard classification of Clarence Cannon Dam?
Clarence Cannon 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 Clarence Cannon Dam?
Clarence Cannon Dam is owned by USACE - St. Louis District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Clarence Cannon Dam built?
Clarence Cannon Dam was completed in 1983, making it 43 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 Clarence Cannon Dam?
Clarence Cannon Dam serves the following purposes: Flood Risk Reduction, Navigation, Fish And Wildlife Pond, 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 Clarence Cannon Dam?
Clarence Cannon Dam has a dam height of 138 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 Clarence Cannon Dam last inspected?
Clarence Cannon Dam was last inspected on August 18, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.