Arch
Key Takeaway
Arch is classified as low hazard in Wyoming. It was completed in 1949 and is 77 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 30 ft (taller than 63.1% in WY) |
| Dam Length | 258 ft |
| Dam Type | Earth |
| Normal Storage | 36 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1949 (77 years old) |
| NID ID | WY01541 |
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
CARL R. & DARLEEN E. ARNDT TRUSTS
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Arch?
Arch 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 Arch?
Arch is owned by CARL R. & DARLEEN E. ARNDT TRUSTS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Arch built?
Arch was completed in 1949, making it 77 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 Arch?
Arch serves the following purposes: Irrigation, Fire Protection, Stock, Or Small Fish Pond, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Arch?
Arch has a dam height of 30 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 Arch last inspected?
Arch was last inspected on August 10, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.