Big Boy
Key Takeaway
Big Boy is classified as low hazard in Wyoming. It was completed in 1969 and is 57 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 33 ft (taller than 75.3% in WY) |
| Dam Length | 350 ft |
| Dam Type | Earth |
| Max Storage | 55 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,543 cfs |
| Year Completed | 1969 (57 years old) |
| NID ID | WY00602 |
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
V BAR F CATTLE COMPANY
Private
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Big Boy?
Big Boy 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 Big Boy?
Big Boy is owned by V BAR F CATTLE COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Boy built?
Big Boy was completed in 1969, making it 57 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 Big Boy?
Big Boy serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Big Boy?
Big Boy has a dam height of 33 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 Big Boy last inspected?
Big Boy was last inspected on June 23, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.