Lake Imhoff Dam
Key Takeaway
Lake Imhoff Dam is classified as high hazard in Missouri. It was completed in 1988 and is 38 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 | 45 ft (taller than 92.6% in MO) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 190 acre-ft |
| Normal Storage | 190 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 2,070 cfs |
| Year Completed | 1988 (38 years old) |
| Year Modified | 1987 |
| NID ID | MO31909 |
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
LAKE IMHOFF HOMEOWNERS ASSOC.
Private
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High Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Lake Imhoff Dam?
Lake Imhoff 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 Imhoff Dam?
Lake Imhoff Dam is owned by LAKE IMHOFF HOMEOWNERS ASSOC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Imhoff Dam built?
Lake Imhoff Dam was completed in 1988, making it 38 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 Imhoff Dam?
Lake Imhoff 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 Imhoff Dam?
Lake Imhoff Dam has a dam height of 45 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 Imhoff Dam last inspected?
Lake Imhoff Dam was last inspected on June 29, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.