Lockport Lock and Controlling Works
Key Takeaway
Lockport Lock and Controlling Works is classified as high hazard in Illinois. It was completed in 1933 and is 93 years old. Its primary use is navigation. 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 Length | 1,100 ft |
| Dam Type | Concrete |
| Max Storage | 25.0K acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 2,112 acres |
| Drainage Area | 740 sq mi |
| Max Discharge | 36,000 cfs |
| Year Completed | 1933 (93 years old) |
| NID ID | IL00007 |
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 - Chicago District
Federal Government
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Lockport Lock and Controlling Works?
Lockport Lock and Controlling Works 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 Lockport Lock and Controlling Works?
Lockport Lock and Controlling Works is owned by USACE - Chicago District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lockport Lock and Controlling Works built?
Lockport Lock and Controlling Works was completed in 1933, making it 93 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 Lockport Lock and Controlling Works?
Lockport Lock and Controlling Works serves the following purposes: Navigation, Hydroelectric, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Lockport Lock and Controlling Works last inspected?
Lockport Lock and Controlling Works was last inspected on March 1, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.