Clam Falls
Key Takeaway
Clam Falls is classified as significant hazard in Wisconsin. It was completed in 1875 and is 151 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 36 ft (taller than 89.5% in WI) |
| Dam Length | 80 ft |
| Dam Type | Gravity |
| Max Storage | 950 acre-ft |
| Normal Storage | 701 acre-ft |
| Surface Area | 127 acres |
| Drainage Area | 65 sq mi |
| Max Discharge | 1,380 cfs |
| Year Completed | 1875 (151 years old) |
| NID ID | WI00022 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Polk County
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Clam Falls?
Clam Falls is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Clam Falls?
Clam Falls is owned by Polk County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Clam Falls built?
Clam Falls was completed in 1875, making it 151 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 Clam Falls?
Clam 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 Clam Falls?
Clam Falls has a dam height of 36 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 Clam Falls last inspected?
Clam Falls was last inspected on November 5, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.