Big Falls Milldam
Key Takeaway
Big Falls Milldam is classified as low hazard in Wisconsin. It was completed in 1926 and is 100 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 15 ft (taller than 45% in WI) |
| Dam Length | 256 ft |
| Dam Type | Gravity |
| Max Storage | 150 acre-ft |
| Normal Storage | 81 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 183 sq mi |
| Max Discharge | 3,600 cfs |
| Year Completed | 1926 (100 years old) |
| NID ID | WI00031 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Iowater Power Corporation
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Big Falls Milldam?
Big Falls Milldam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Big Falls Milldam?
Big Falls Milldam is owned by Iowater Power Corporation (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Falls Milldam built?
Big Falls Milldam was completed in 1926, making it 100 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 Big Falls Milldam?
Big Falls Milldam 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 Big Falls Milldam?
Big Falls Milldam has a dam height of 15 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 Big Falls Milldam last inspected?
Big Falls Milldam was last inspected on July 11, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.