Lake Osage Dam
Key Takeaway
Lake Osage Dam is classified as high hazard in Missouri. It was completed in 1959 and is 67 years old. Its primary use is recreation. 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 | 38 ft (taller than 88.1% in MO) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 151 acre-ft |
| Normal Storage | 108 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,423 cfs |
| Year Completed | 1959 (67 years old) |
| NID ID | MO30120 |
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
OZARK COUNCIL 308, BSA
Private
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High Hazard 32 ftFrequently Asked Questions
What is the hazard classification of Lake Osage Dam?
Lake Osage 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 Osage Dam?
Lake Osage Dam is owned by OZARK COUNCIL 308, BSA (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Osage Dam built?
Lake Osage 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 Osage Dam?
Lake Osage Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Osage Dam?
Lake Osage Dam has a dam height of 38 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 Osage Dam last inspected?
Lake Osage Dam was last inspected on October 27, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.