Gwenmil Lake Dam
Key Takeaway
Gwenmil Lake Dam is classified as high hazard in Missouri. It was completed in 1957 and is 69 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 | 29 ft (taller than 59.6% in MO) |
| Dam Type | Earth |
| Max Storage | 47 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 16 sq mi |
| Year Completed | 1957 (69 years old) |
| NID ID | MO31210 |
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
GWEN MILL LAKE SUBD INC
Private
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High Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Gwenmil Lake Dam?
Gwenmil 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 Gwenmil Lake Dam?
Gwenmil Lake Dam is owned by GWEN MILL LAKE SUBD INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Gwenmil Lake Dam built?
Gwenmil Lake Dam was completed in 1957, making it 69 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 Gwenmil Lake Dam?
Gwenmil 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 Gwenmil Lake Dam?
Gwenmil Lake Dam has a dam height of 29 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 Gwenmil Lake Dam last inspected?
Gwenmil Lake Dam was last inspected on November 7, 1980. Inspection dates indicate when a formal review occurred, not the results of that inspection.