Simmons Lake Dam
Key Takeaway
Simmons Lake Dam is classified as high hazard in Missouri. It was completed in 1977 and is 49 years old. Its primary use is flood risk reduction. 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 | 30 ft (taller than 63.5% in MO) |
| Dam Type | Earth |
| Max Storage | 883 acre-ft |
| Normal Storage | 440 acre-ft |
| Surface Area | 55 acres |
| Drainage Area | 716 sq mi |
| Year Completed | 1977 (49 years old) |
| NID ID | MO11012 |
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
D D SIMMONS
Private
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High Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Simmons Lake Dam?
Simmons 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 Simmons Lake Dam?
Simmons Lake Dam is owned by D D SIMMONS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Simmons Lake Dam built?
Simmons 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 Simmons Lake Dam?
Simmons Lake Dam serves the following purposes: Flood Risk Reduction, Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Simmons Lake Dam?
Simmons Lake Dam has a dam height of 30 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.