Harrisville
Key Takeaway
Harrisville is classified as high hazard in Wisconsin. It was completed in 1853 and is 173 years old. Its primary use is hydroelectric. 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 | 15 ft (taller than 45% in WI) |
| Dam Length | 700 ft |
| Dam Type | Gravity |
| Max Storage | 1.6K acre-ft |
| Normal Storage | 800 acre-ft |
| Surface Area | 245 acres |
| Drainage Area | 78 sq mi |
| Max Discharge | 2,700 cfs |
| Year Completed | 1853 (173 years old) |
| NID ID | WI00074 |
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
Town Of Harris
Local Government
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Harrisville?
Harrisville 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 Harrisville?
Harrisville is owned by Town Of Harris (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Harrisville built?
Harrisville was completed in 1853, making it 173 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 Harrisville?
Harrisville serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Harrisville?
Harrisville has a dam height of 15 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 Harrisville last inspected?
Harrisville was last inspected on October 20, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.