Day Lake
Key Takeaway
Day 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 | 25 ft (taller than 70.9% in WI) |
| Dam Length | 380 ft |
| Dam Type | Concrete |
| Max Storage | 6.2K acre-ft |
| Normal Storage | 4.2K acre-ft |
| Surface Area | 640 acres |
| Drainage Area | 16 sq mi |
| Max Discharge | 2,390 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | WI00821 |
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
USDA FS
Federal Government
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Low Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Day Lake?
Day 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 Day Lake?
Day Lake is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Day Lake built?
Day 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 Day Lake?
Day Lake serves the following purposes: Recreation, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Day Lake?
Day Lake has a dam height of 25 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 Day Lake last inspected?
Day Lake was last inspected on August 10, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.