John Williams Dam
Key Takeaway
John Williams Dam is classified as low hazard in Missouri. It was completed in 1999 and is 27 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 23 ft (taller than 18% in MO) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 70 acre-ft |
| Normal Storage | 44 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 26 sq mi |
| Max Discharge | 15 cfs |
| Year Completed | 1999 (27 years old) |
| NID ID | MO50976 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
JOHN WILLIAMS
Private
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Low Hazard 27 ftFrequently Asked Questions
What is the hazard classification of John Williams Dam?
John Williams Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates John Williams Dam?
John Williams Dam is owned by JOHN WILLIAMS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was John Williams Dam built?
John Williams Dam was completed in 1999, making it 27 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 John Williams Dam?
John Williams Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is John Williams Dam?
John Williams Dam has a dam height of 23 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 John Williams Dam last inspected?
John Williams Dam was last inspected on November 1, 1999. Inspection dates indicate when a formal review occurred, not the results of that inspection.