Wyoming Hereford Ranch No. 1
Key Takeaway
Wyoming Hereford Ranch No. 1 is classified as significant hazard in Wyoming. It was completed in 1930 and is 96 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 28 ft (taller than 55% in WY) |
| Dam Length | 1,300 ft |
| Dam Type | Earth |
| Max Storage | 1.6K acre-ft |
| Normal Storage | 878 acre-ft |
| Surface Area | 109 acres |
| Drainage Area | 318 sq mi |
| Max Discharge | 7,180 cfs |
| Year Completed | 1930 (96 years old) |
| Year Modified | 2011 |
| NID ID | WY00010 |
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
J. SLOAN HALES & DEAN FOGG & D. LUMMIS
Private
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Wyoming Hereford Ranch No. 1?
Wyoming Hereford Ranch No. 1 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 Wyoming Hereford Ranch No. 1?
Wyoming Hereford Ranch No. 1 is owned by J. SLOAN HALES & DEAN FOGG & D. LUMMIS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Wyoming Hereford Ranch No. 1 built?
Wyoming Hereford Ranch No. 1 was completed in 1930, making it 96 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 Wyoming Hereford Ranch No. 1?
Wyoming Hereford Ranch 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 Wyoming Hereford Ranch No. 1?
Wyoming Hereford Ranch No. 1 has a dam height of 28 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 Wyoming Hereford Ranch No. 1 last inspected?
Wyoming Hereford Ranch No. 1 was last inspected on September 10, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.