Menasha Lock and Dam
Key Takeaway
Menasha Lock and Dam is classified as high hazard in Wisconsin. It was completed in 1937 and is 89 years old. Its primary use is flood risk reduction. 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 Length | 401 ft |
| Dam Type | Concrete |
| Max Storage | 2.4M acre-ft |
| Normal Storage | 1.2M acre-ft |
| Surface Area | 173,000 acres |
| Drainage Area | 6,030 sq mi |
| Max Discharge | 24,800 cfs |
| Year Completed | 1937 (89 years old) |
| NID ID | WI00814 |
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
USACE - Chicago District;Wisconsin DNR
Federal Government
Nearby Dams
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High Hazard 15 ftUpper Appleton Locks and Dam
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Low Hazard 11 ftLower Appleton Locks and Dam
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Significant HazardKensington Pond
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High Hazard 14 ftCedars Lock and Dam
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High HazardLittle Chute Locks and Dam
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Significant HazardApple Creek Dam #2
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Low Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Menasha Lock and Dam?
Menasha Lock and Dam 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 Menasha Lock and Dam?
Menasha Lock and Dam is owned by USACE - Chicago District;Wisconsin DNR (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Menasha Lock and Dam built?
Menasha Lock and Dam was completed in 1937, making it 89 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 Menasha Lock and Dam?
Menasha Lock and Dam serves the following purposes: Flood Risk Reduction, Navigation, Fish And Wildlife Pond, Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Menasha Lock and Dam last inspected?
Menasha Lock and Dam was last inspected on August 7, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.