Poy Sippi
Key Takeaway
Poy Sippi is classified as high hazard in Wisconsin. It was completed in 1935 and is 91 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 | 12 ft (taller than 30.4% in WI) |
| Dam Length | 204 ft |
| Dam Type | Gravity |
| Max Storage | 250 acre-ft |
| Normal Storage | 130 acre-ft |
| Surface Area | 57 acres |
| Drainage Area | 131 sq mi |
| Max Discharge | 1,465 cfs |
| Year Completed | 1935 (91 years old) |
| NID ID | WI00231 |
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
Poy Sippi Betterment Assoc.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Poy Sippi?
Poy Sippi 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 Poy Sippi?
Poy Sippi is owned by Poy Sippi Betterment Assoc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Poy Sippi built?
Poy Sippi was completed in 1935, making it 91 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 Poy Sippi?
Poy Sippi serves the following purposes: Recreation, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Poy Sippi?
Poy Sippi has a dam height of 12 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 Poy Sippi last inspected?
Poy Sippi was last inspected on November 21, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.