Stonebridge
Key Takeaway
Stonebridge is classified as significant hazard in Wyoming. It was completed in 1905 and is 121 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 24 ft (taller than 35.6% in WY) |
| Dam Length | 685 ft |
| Dam Type | Earth |
| Max Storage | 822 acre-ft |
| Normal Storage | 505 acre-ft |
| Surface Area | 63 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 776 cfs |
| Year Completed | 1905 (121 years old) |
| Year Modified | 1994 |
| NID ID | WY01107 |
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
PTARMIGAN PARTNERS LLC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Stonebridge?
Stonebridge 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 Stonebridge?
Stonebridge is owned by PTARMIGAN PARTNERS LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Stonebridge built?
Stonebridge was completed in 1905, making it 121 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 Stonebridge?
Stonebridge 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 Stonebridge?
Stonebridge has a dam height of 24 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 Stonebridge last inspected?
Stonebridge was last inspected on June 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.