Minong Flowage
Key Takeaway
Minong Flowage is classified as high hazard in Wisconsin. It was completed in 1936 and is 90 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 | 29 ft (taller than 79.3% in WI) |
| Dam Length | 300 ft |
| Dam Type | Gravity |
| Max Storage | 23.0K acre-ft |
| Normal Storage | 13.3K acre-ft |
| Surface Area | 1,609 acres |
| Drainage Area | 320 sq mi |
| Max Discharge | 6,755 cfs |
| Year Completed | 1936 (90 years old) |
| NID ID | WI00087 |
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
Washburn County
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Minong Flowage?
Minong Flowage 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 Minong Flowage?
Minong Flowage is owned by Washburn County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Minong Flowage built?
Minong Flowage was completed in 1936, making it 90 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 Minong Flowage?
Minong Flowage serves the following purposes: Recreation, Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Minong Flowage?
Minong Flowage has a dam height of 29 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 Minong Flowage last inspected?
Minong Flowage was last inspected on October 21, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.