Crowley
Key Takeaway
Crowley is classified as high hazard in Wisconsin. It was completed in 1930 and is 96 years old. Its primary use is hydroelectric. 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 | 23 ft (taller than 67% in WI) |
| Dam Length | 513 ft |
| Dam Type | Gravity |
| Max Storage | 3.5K acre-ft |
| Normal Storage | 3.5K acre-ft |
| Surface Area | 422 acres |
| Drainage Area | 820 sq mi |
| Max Discharge | 16,250 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | WI00788 |
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
Flambeau Hydro, Llc
Private
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Low Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Crowley?
Crowley 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 Crowley?
Crowley is owned by Flambeau Hydro, Llc (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Crowley built?
Crowley was completed in 1930, making it 96 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 Crowley?
Crowley serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Crowley?
Crowley has a dam height of 23 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 Crowley last inspected?
Crowley was last inspected on July 14, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.