M.O. No. 1
Key Takeaway
M.O. No. 1 is classified as low hazard in Wyoming. It was completed in 1985 and is 41 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 27 ft (taller than 50.7% in WY) |
| Dam Length | 220 ft |
| Dam Type | Earth |
| Max Storage | 40 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,133 cfs |
| Year Completed | 1985 (41 years old) |
| NID ID | WY01985 |
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
GREEN VALLEY ATTN: MONTE L. MCNAMEE
Private
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of M.O. No. 1?
M.O. No. 1 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 M.O. No. 1?
M.O. No. 1 is owned by GREEN VALLEY ATTN: MONTE L. MCNAMEE (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was M.O. No. 1 built?
M.O. No. 1 was completed in 1985, making it 41 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 M.O. No. 1?
M.O. No. 1 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 M.O. No. 1?
M.O. No. 1 has a dam height of 27 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 M.O. No. 1 last inspected?
M.O. No. 1 was last inspected on May 10, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.