Twin Falls
Key Takeaway
Twin Falls is classified as high hazard in Wisconsin. It was completed in 1912 and is 114 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 | 56 ft (taller than 98.3% in WI) |
| Dam Length | 800 ft |
| Dam Type | Gravity |
| Max Storage | 10.0K acre-ft |
| Normal Storage | 5.6K acre-ft |
| Surface Area | 1,120 acres |
| Drainage Area | 1,790 sq mi |
| Max Discharge | 40,480 cfs |
| Year Completed | 1912 (114 years old) |
| NID ID | WI05016 |
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
WE ENERGIES
Private
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Low Hazard 60 ftFrequently Asked Questions
What is the hazard classification of Twin Falls?
Twin Falls 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 Twin Falls?
Twin Falls is owned by WE ENERGIES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twin Falls built?
Twin Falls was completed in 1912, making it 114 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 Twin Falls?
Twin Falls 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 Twin Falls?
Twin Falls has a dam height of 56 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 Twin Falls last inspected?
Twin Falls was last inspected on December 1, 2010. Inspection dates indicate when a formal review occurred, not the results of that inspection.