Smithland Locks and Dam
Key Takeaway
Smithland Locks and Dam is classified as significant hazard in Illinois. It was completed in 1980 and is 46 years old. Its primary use is navigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Length | 130 ft |
| Dam Type | Concrete |
| Max Storage | 738.7K acre-ft |
| Normal Storage | 406.0K acre-ft |
| Surface Area | 23,600 acres |
| Drainage Area | 144,000 sq mi |
| Max Discharge | 190,000 cfs |
| Year Completed | 1980 (46 years old) |
| NID ID | IL50499 |
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 - Louisville District
Federal Government
Nearby Dams
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Low Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Smithland Locks and Dam?
Smithland Locks and Dam 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 Smithland Locks and Dam?
Smithland Locks and Dam is owned by USACE - Louisville District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Smithland Locks and Dam built?
Smithland Locks and Dam was completed in 1980, making it 46 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 Smithland Locks and Dam?
Smithland Locks and Dam serves the following purposes: Navigation, Fish And Wildlife Pond, Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Smithland Locks and Dam last inspected?
Smithland Locks and Dam was last inspected on August 3, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.