Twehous Lake Dam
Key Takeaway
Twehous Lake Dam is classified as high hazard in Missouri. It was completed in 1973 and is 53 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 | 48 ft (taller than 94.2% in MO) |
| Dam Length | 1,200 ft |
| Dam Type | Earth |
| Max Storage | 996 acre-ft |
| Normal Storage | 996 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 929 cfs |
| Year Completed | 1973 (53 years old) |
| Year Modified | 1986 |
| NID ID | MO30491 |
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
RANDALL L & SHARON M. TWEHOUS
Private
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Twehous Lake Dam?
Twehous Lake 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 Twehous Lake Dam?
Twehous Lake Dam is owned by RANDALL L & SHARON M. TWEHOUS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twehous Lake Dam built?
Twehous Lake Dam was completed in 1973, making it 53 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 Twehous Lake Dam?
Twehous Lake 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 Twehous Lake Dam?
Twehous Lake Dam has a dam height of 48 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 Twehous Lake Dam last inspected?
Twehous Lake Dam was last inspected on June 9, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.