West Side No. 4
Key Takeaway
West Side No. 4 is classified as low hazard in Wyoming. It was completed in 1946 and is 80 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 23 ft (taller than 32.5% in WY) |
| Dam Length | 236 ft |
| Dam Type | Earth |
| Max Storage | 123 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1946 (80 years old) |
| NID ID | WY00194 |
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
GREEN VALLEY ATTN: MONTE L. McNAMEE
Private
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High Hazard 135 ftFrequently Asked Questions
What is the hazard classification of West Side No. 4?
West Side No. 4 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 West Side No. 4?
West Side No. 4 is owned by GREEN VALLEY ATTN: MONTE L. McNAMEE (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was West Side No. 4 built?
West Side No. 4 was completed in 1946, making it 80 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 West Side No. 4?
West Side No. 4 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 West Side No. 4?
West Side No. 4 has a dam height of 23 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 West Side No. 4 last inspected?
West Side No. 4 was last inspected on May 10, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.