South Nelson 1
Key Takeaway
South Nelson 1 is classified as low hazard in Wisconsin. It was completed in 1966 and is 60 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 40 ft (taller than 92.6% in WI) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 172 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 3,191 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | WI00353 |
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
Buffalo County
Local Government
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What is the hazard classification of South Nelson 1?
South Nelson 1 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 South Nelson 1?
South Nelson 1 is owned by Buffalo County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Nelson 1 built?
South Nelson 1 was completed in 1966, making it 60 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 South Nelson 1?
South Nelson 1 serves the following purposes: Flood Risk Reduction, Debris Control. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is South Nelson 1?
South Nelson 1 has a dam height of 40 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 South Nelson 1 last inspected?
South Nelson 1 was last inspected on May 18, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.