Kiewit No. 1
Key Takeaway
Kiewit No. 1 is classified as low hazard in Wyoming. It was completed in 1964 and is 62 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 28 ft (taller than 55% in WY) |
| Dam Length | 1,200 ft |
| Dam Type | Earth |
| Max Storage | 158 acre-ft |
| Normal Storage | 98 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1964 (62 years old) |
| NID ID | WY00693 |
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
X-X RANCH, LLC, ATT: DAVID HANNAHS
Private
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Kiewit No. 1?
Kiewit 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 Kiewit No. 1?
Kiewit No. 1 is owned by X-X RANCH, LLC, ATT: DAVID HANNAHS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Kiewit No. 1 built?
Kiewit No. 1 was completed in 1964, making it 62 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 Kiewit No. 1?
Kiewit 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 Kiewit No. 1?
Kiewit 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 Kiewit No. 1 last inspected?
Kiewit No. 1 was last inspected on September 24, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.