Iron Mountain
Key Takeaway
Iron Mountain is classified as low hazard in Wyoming. It was completed in 1910 and is 116 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 35 ft (taller than 78.8% in WY) |
| Dam Length | 270 ft |
| Dam Type | Earth |
| Max Storage | 242 acre-ft |
| Normal Storage | 168 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1910 (116 years old) |
| Year Modified | 2002 |
| NID ID | WY00032 |
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
DON & TAMARA WILLIS
Private
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Low Hazard 38 ftFrequently Asked Questions
What is the hazard classification of Iron Mountain?
Iron Mountain 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 Iron Mountain?
Iron Mountain is owned by DON & TAMARA WILLIS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Iron Mountain built?
Iron Mountain was completed in 1910, making it 116 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 Iron Mountain?
Iron Mountain serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Iron Mountain?
Iron Mountain has a dam height of 35 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 Iron Mountain last inspected?
Iron Mountain was last inspected on June 15, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.