Hillsboro
Key Takeaway
Hillsboro is classified as high hazard in Wisconsin. It was completed in 1854 and is 172 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 | 500 ft |
| Dam Type | Gravity |
| Max Storage | 430 acre-ft |
| Normal Storage | 160 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 39 sq mi |
| Max Discharge | 10,132 cfs |
| Year Completed | 1854 (172 years old) |
| NID ID | WI00320 |
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
City Of Hillsboro
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Hillsboro?
Hillsboro 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 Hillsboro?
Hillsboro is owned by City Of Hillsboro (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hillsboro built?
Hillsboro was completed in 1854, making it 172 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 Hillsboro?
Hillsboro 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 Hillsboro?
Hillsboro 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 Hillsboro last inspected?
Hillsboro was last inspected on November 9, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.