Lake St. Gallen Dam
Key Takeaway
Lake St. Gallen Dam is classified as high hazard in Missouri. It was completed in 1979 and is 47 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 | 57 ft (taller than 96.8% in MO) |
| Dam Length | 410 ft |
| Dam Type | Earth |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 694 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 656 cfs |
| Year Completed | 1979 (47 years old) |
| Year Modified | 1993 |
| NID ID | MO31919 |
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
INNSBROOK owners association
Private
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Lake St. Gallen Dam?
Lake St. Gallen 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 St. Gallen Dam?
Lake St. Gallen Dam is owned by INNSBROOK owners association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake St. Gallen Dam built?
Lake St. Gallen Dam was completed in 1979, making it 47 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 St. Gallen Dam?
Lake St. Gallen 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 St. Gallen Dam?
Lake St. Gallen Dam has a dam height of 57 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 St. Gallen Dam last inspected?
Lake St. Gallen Dam was last inspected on October 27, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.