Lake Redstone
Key Takeaway
Lake Redstone is classified as high hazard in Wisconsin. It was completed in 1967 and is 59 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 | 50 ft (taller than 97.5% in WI) |
| Dam Length | 600 ft |
| Dam Type | Gravity |
| Max Storage | 15.2K acre-ft |
| Normal Storage | 8.7K acre-ft |
| Surface Area | 612 acres |
| Drainage Area | 30 sq mi |
| Max Discharge | 3,800 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | WI00707 |
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
Sauk County
Local Government
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What is the hazard classification of Lake Redstone?
Lake Redstone 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 Lake Redstone?
Lake Redstone is owned by Sauk County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Redstone built?
Lake Redstone was completed in 1967, making it 59 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 Lake Redstone?
Lake Redstone 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 Lake Redstone?
Lake Redstone has a dam height of 50 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 Lake Redstone last inspected?
Lake Redstone was last inspected on July 19, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.