Apple River
Key Takeaway
Apple River is classified as high hazard in Wisconsin. It was completed in 1954 and is 72 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 | 47 ft (taller than 97% in WI) |
| Dam Type | Masonry |
| Max Storage | 668 acre-ft |
| Normal Storage | 668 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 555 sq mi |
| Max Discharge | 9,000 cfs |
| Year Completed | 1954 (72 years old) |
| NID ID | WI00027 |
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
Northern States Power Co
Public Utility
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Apple River?
Apple River 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 Apple River?
Apple River is owned by Northern States Power Co (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Apple River built?
Apple River was completed in 1954, making it 72 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 Apple River?
Apple River 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 Apple River?
Apple River has a dam height of 47 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 Apple River last inspected?
Apple River was last inspected on May 24, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.