Birch Lake
Key Takeaway
Birch Lake is classified as significant hazard in Wisconsin. It was completed in 1878 and is 148 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 28 ft (taller than 77.3% in WI) |
| Dam Length | 600 ft |
| Dam Type | Gravity |
| Max Storage | 23.0K acre-ft |
| Normal Storage | 14.0K acre-ft |
| Surface Area | 2,288 acres |
| Drainage Area | 66 sq mi |
| Max Discharge | 2,250 cfs |
| Year Completed | 1878 (148 years old) |
| NID ID | WI00085 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Washburn County
Local Government
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Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Birch Lake?
Birch Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Birch Lake?
Birch Lake is owned by Washburn County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Birch Lake built?
Birch Lake was completed in 1878, making it 148 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 Birch Lake?
Birch 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 Birch Lake?
Birch Lake has a dam height of 28 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 Birch Lake last inspected?
Birch Lake was last inspected on June 5, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.