Upper Dam
Key Takeaway
Upper Dam is classified as low hazard in Wisconsin. It was completed in 1883 and is 143 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 18 ft (taller than 55.3% in WI) |
| Dam Length | 289 ft |
| Dam Type | Gravity |
| Max Storage | 1.3K acre-ft |
| Normal Storage | 1.3K acre-ft |
| Surface Area | 215 acres |
| Drainage Area | 147 sq mi |
| Max Discharge | 2,600 cfs |
| Year Completed | 1883 (143 years old) |
| NID ID | WI00799 |
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
Gresham, Village of
Local Government
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What is the hazard classification of Upper Dam?
Upper Dam 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 Dam?
Upper Dam is owned by Gresham, Village of (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Dam built?
Upper Dam was completed in 1883, making it 143 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 Dam?
Upper Dam 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 Upper Dam?
Upper Dam has a dam height of 18 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 Dam last inspected?
Upper Dam was last inspected on July 12, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.