Patterson Lake Dam
Key Takeaway
Patterson Lake Dam is classified as high hazard in Missouri. It was completed in 1972 and is 54 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 | 31 ft (taller than 73.7% in MO) |
| Dam Type | Earth |
| Max Storage | 166 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 230 sq mi |
| Year Completed | 1972 (54 years old) |
| NID ID | MO11294 |
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
JAMES A PATTERSON
Private
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Low Hazard 34 ftFrequently Asked Questions
What is the hazard classification of Patterson Lake Dam?
Patterson 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 Patterson Lake Dam?
Patterson Lake Dam is owned by JAMES A PATTERSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Patterson Lake Dam built?
Patterson Lake Dam was completed in 1972, making it 54 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 Patterson Lake Dam?
Patterson 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 Patterson Lake Dam?
Patterson Lake Dam has a dam height of 31 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 Patterson Lake Dam last inspected?
Patterson Lake Dam was last inspected on September 11, 1990. Inspection dates indicate when a formal review occurred, not the results of that inspection.