Bonneville
Key Takeaway
Bonneville is classified as low hazard in Wyoming. It was completed in 1914 and is 112 years old. Its primary use is other.
Physical Details
| Dam Height | 40 ft (taller than 86.7% in WY) |
| Dam Length | 1,010 ft |
| Dam Type | Earth |
| Max Storage | 681 acre-ft |
| Normal Storage | 511 acre-ft |
| Surface Area | 63 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 670 cfs |
| Year Completed | 1914 (112 years old) |
| NID ID | WY01155 |
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
FLAGSTONE RANCH, LLC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Bonneville?
Bonneville 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 Bonneville?
Bonneville is owned by FLAGSTONE RANCH, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Bonneville built?
Bonneville was completed in 1914, making it 112 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 Bonneville?
Bonneville serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Bonneville?
Bonneville has a dam height of 40 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 Bonneville last inspected?
Bonneville was last inspected on August 28, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.