Little Boxelder No. 1
Key Takeaway
Little Boxelder No. 1 is classified as significant hazard in Wyoming. It was completed in 1971 and is 55 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 54 ft (taller than 94.8% in WY) |
| Dam Length | 1,075 ft |
| Dam Type | Earth |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 889 acre-ft |
| Surface Area | 59 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1971 (55 years old) |
| NID ID | WY00331 |
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
GREEN VALLEY ATTN: MONTE MCNAMEE
Private
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Little Boxelder No. 1?
Little Boxelder No. 1 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 Little Boxelder No. 1?
Little Boxelder No. 1 is owned by GREEN VALLEY ATTN: MONTE MCNAMEE (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Little Boxelder No. 1 built?
Little Boxelder No. 1 was completed in 1971, making it 55 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 Little Boxelder No. 1?
Little Boxelder No. 1 serves the following purposes: Irrigation, 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 Little Boxelder No. 1?
Little Boxelder No. 1 has a dam height of 54 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 Little Boxelder No. 1 last inspected?
Little Boxelder No. 1 was last inspected on May 10, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.