Nelligan Lake
Key Takeaway
Nelligan Lake is classified as high hazard in Wisconsin. It was completed in 1968 and is 58 years old. Its primary use is recreation. 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 | 200 ft |
| Dam Type | Earth |
| Max Storage | 740 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 200 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | WI00452 |
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
Town Of Beaver
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Nelligan Lake?
Nelligan Lake 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 Nelligan Lake?
Nelligan Lake is owned by Town Of Beaver (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nelligan Lake built?
Nelligan Lake was completed in 1968, making it 58 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 Nelligan Lake?
Nelligan Lake serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Nelligan Lake?
Nelligan Lake 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 Nelligan Lake last inspected?
Nelligan Lake was last inspected on March 25, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.