Cedars Lock and Dam
Key Takeaway
Cedars Lock and Dam is classified as high hazard in Wisconsin. It was completed in 1934 and is 92 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 Length | 699 ft |
| Dam Type | Concrete |
| Max Storage | 2.1K acre-ft |
| Normal Storage | 1.8K acre-ft |
| Surface Area | 341 acres |
| Drainage Area | 6,003 sq mi |
| Max Discharge | 25,000 cfs |
| Year Completed | 1934 (92 years old) |
| NID ID | WI00852 |
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;Wisconsin DNR
Federal Government
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High Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Cedars Lock and Dam?
Cedars Lock and 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 Cedars Lock and Dam?
Cedars Lock and Dam is owned by USACE - Chicago District;Wisconsin DNR (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cedars Lock and Dam built?
Cedars Lock and Dam was completed in 1934, making it 92 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 Cedars Lock and Dam?
Cedars Lock and Dam serves the following purposes: Flood Risk Reduction, Navigation, Recreation, Hydroelectric, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Cedars Lock and Dam last inspected?
Cedars Lock and Dam was last inspected on August 21, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.