John Williams Lake Dam
Key Takeaway
John Williams Lake Dam is classified as significant hazard in Missouri. It was completed in 1977 and is 49 years old. Its primary use is grade stabilization. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 26 ft (taller than 43.5% in MO) |
| Dam Length | 660 ft |
| Dam Type | Earth |
| Max Storage | 286 acre-ft |
| Normal Storage | 126 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 90 sq mi |
| Max Discharge | 165 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | MO20649 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
JOHN WILLIAMS
Private
Nearby Dams
B. Williams Lake Dam No 1
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of John Williams Lake Dam?
John Williams Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates John Williams Lake Dam?
John Williams Lake Dam is owned by JOHN WILLIAMS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was John Williams Lake Dam built?
John Williams Lake Dam was completed in 1977, making it 49 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 Lake Dam?
John Williams Lake Dam serves the following purposes: Grade Stabilization, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is John Williams Lake Dam?
John Williams Lake Dam has a dam height of 26 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.