Mississippi River Lock and Dam 24
Key Takeaway
Mississippi River Lock and Dam 24 is classified as significant hazard in Missouri. It was completed in 1940 and is 86 years old. Its primary use is navigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 55 ft (taller than 96.3% in MO) |
| Dam Length | 4,584 ft |
| Dam Type | Concrete |
| Max Storage | 125.4K acre-ft |
| Normal Storage | 125.4K acre-ft |
| Surface Area | 13,000 acres |
| Drainage Area | 140,900 sq mi |
| Max Discharge | 364,000 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | MO10300 |
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
USACE - St. Louis District
Federal Government
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Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of Mississippi River Lock and Dam 24?
Mississippi River Lock and Dam 24 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 Mississippi River Lock and Dam 24?
Mississippi River Lock and Dam 24 is owned by USACE - St. Louis District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mississippi River Lock and Dam 24 built?
Mississippi River Lock and Dam 24 was completed in 1940, making it 86 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 Mississippi River Lock and Dam 24?
Mississippi River Lock and Dam 24 serves the following purposes: Navigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mississippi River Lock and Dam 24?
Mississippi River Lock and Dam 24 has a dam height of 55 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 Mississippi River Lock and Dam 24 last inspected?
Mississippi River Lock and Dam 24 was last inspected on March 15, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.