Mason Memorial Dam
Key Takeaway
Mason Memorial Dam is classified as high hazard in Missouri. It was completed in 1970 and is 56 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 | 28 ft (taller than 54.3% in MO) |
| Dam Type | Earth |
| Max Storage | 180 acre-ft |
| Normal Storage | 92 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 150 sq mi |
| Year Completed | 1970 (56 years old) |
| NID ID | MO30395 |
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
WILLARD MCWILLIAMS
Private
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Mason Memorial Dam?
Mason Memorial 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 Mason Memorial Dam?
Mason Memorial Dam is owned by WILLARD MCWILLIAMS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mason Memorial Dam built?
Mason Memorial Dam was completed in 1970, making it 56 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 Mason Memorial Dam?
Mason Memorial 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 Mason Memorial Dam?
Mason Memorial Dam has a dam height of 28 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.