Pattison State Park
Key Takeaway
Pattison State Park is classified as significant hazard in Wisconsin. It was completed in 1931 and is 95 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 20 ft (taller than 60.1% in WI) |
| Dam Length | 300 ft |
| Dam Type | Gravity |
| Max Storage | 340 acre-ft |
| Normal Storage | 180 acre-ft |
| Surface Area | 27 acres |
| Drainage Area | 78 sq mi |
| Max Discharge | 4,194 cfs |
| Year Completed | 1931 (95 years old) |
| NID ID | WI00127 |
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
Wisconsin Department of Natural Resources
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Pattison State Park?
Pattison State Park 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 Pattison State Park?
Pattison State Park is owned by Wisconsin Department of Natural Resources (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pattison State Park built?
Pattison State Park was completed in 1931, making it 95 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 Pattison State Park?
Pattison State Park 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 Pattison State Park?
Pattison State Park has a dam height of 20 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 Pattison State Park last inspected?
Pattison State Park was last inspected on September 30, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.