Lake Oshawno Dam
Key Takeaway
Lake Oshawno Dam is classified as high hazard in Kansas. It was completed in 1959 and is 67 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 Height | 36 ft (taller than 87.5% in KS) |
| Dam Length | 455 ft |
| Dam Type | Earth |
| Max Storage | 310 acre-ft |
| Normal Storage | 134 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,051 cfs |
| Year Completed | 1959 (67 years old) |
| Year Modified | 2016 |
| NID ID | KS01572 |
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
OSHAWNO LAKE ASSN INC
Private
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Lake Oshawno Dam?
Lake Oshawno 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 Lake Oshawno Dam?
Lake Oshawno Dam is owned by OSHAWNO LAKE ASSN INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Oshawno Dam built?
Lake Oshawno Dam was completed in 1959, making it 67 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 Lake Oshawno Dam?
Lake Oshawno Dam serves the following purposes: Flood Risk Reduction, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Oshawno Dam?
Lake Oshawno Dam 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 Lake Oshawno Dam last inspected?
Lake Oshawno Dam was last inspected on December 10, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.