Four Mile
Key Takeaway
Four Mile is classified as low hazard in Wyoming. It was completed in 1944 and is 82 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 18 ft (taller than 17.2% in WY) |
| Dam Length | 700 ft |
| Dam Type | Earth |
| Max Storage | 136 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1944 (82 years old) |
| NID ID | WY00994 |
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
JIM FORBES
Private
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Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Four Mile?
Four Mile 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 Four Mile?
Four Mile is owned by JIM FORBES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Four Mile built?
Four Mile was completed in 1944, making it 82 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 Four Mile?
Four Mile 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 Four Mile?
Four Mile has a dam height of 18 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 Four Mile last inspected?
Four Mile was last inspected on June 29, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.