Upper Mayville
Key Takeaway
Upper Mayville is classified as low hazard in Wisconsin. It was completed in 1848 and is 178 years old. Its primary use is recreation.
Physical Details
| Dam Height | 15 ft (taller than 45% in WI) |
| Dam Length | 200 ft |
| Dam Type | Earth |
| Max Storage | 300 acre-ft |
| Normal Storage | 227 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 172 sq mi |
| Max Discharge | 4,400 cfs |
| Year Completed | 1848 (178 years old) |
| NID ID | WI00122 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Mayville
Local Government
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What is the hazard classification of Upper Mayville?
Upper Mayville is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Upper Mayville?
Upper Mayville is owned by City of Mayville (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Mayville built?
Upper Mayville was completed in 1848, making it 178 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 Upper Mayville?
Upper Mayville 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 Upper Mayville?
Upper Mayville 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 Upper Mayville last inspected?
Upper Mayville was last inspected on October 5, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.