Rathbun Irrigation No. 1

DRY FORK W KIRBY CREEK· Hot Springs, Wyoming· Built 1956· Earth· 29 ft tall
Low Hazard Irrigation Private

Key Takeaway

Rathbun Irrigation No. 1 is classified as low hazard in Wyoming. It was completed in 1956 and is 70 years old. Its primary use is irrigation.

Physical Details

Dam Height 29 ft (taller than 59.6% in WY)
Dam Length280 ft
Dam TypeEarth
Max Storage38 acre-ft
Normal Storage23 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1956 (70 years old)
NID IDWY01095

Safety Information

Low Hazard

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?

Emergency Action Plan: No
Last Inspection: September 15, 2022
State Regulated: Yes
Regulatory Agency: SEO

Ownership

PURE WYOMING LLC

Private

Frequently Asked Questions

What is the hazard classification of Rathbun Irrigation No. 1?

Rathbun Irrigation No. 1 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 Rathbun Irrigation No. 1?

Rathbun Irrigation No. 1 is owned by PURE WYOMING LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Rathbun Irrigation No. 1 built?

Rathbun Irrigation No. 1 was completed in 1956, making it 70 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 Rathbun Irrigation No. 1?

Rathbun Irrigation No. 1 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 Rathbun Irrigation No. 1?

Rathbun Irrigation No. 1 has a dam height of 29 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 Rathbun Irrigation No. 1 last inspected?

Rathbun Irrigation No. 1 was last inspected on September 15, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.