Spencer
Key Takeaway
Spencer is classified as significant hazard in Wyoming. It was completed in 1952 and is 74 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 45 ft (taller than 91.2% in WY) |
| Dam Length | 1,350 ft |
| Dam Type | Earth |
| Max Storage | 2.8K acre-ft |
| Normal Storage | 2.2K acre-ft |
| Surface Area | 126 acres |
| Drainage Area | 20 sq mi |
| Max Discharge | 3,827 cfs |
| Year Completed | 1952 (74 years old) |
| NID ID | WY00717 |
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
TRUE RANCHES, INC. (RANDY FERELLA)
Private
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Spencer?
Spencer 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 Spencer?
Spencer is owned by TRUE RANCHES, INC. (RANDY FERELLA) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Spencer built?
Spencer was completed in 1952, making it 74 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 Spencer?
Spencer 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 Spencer?
Spencer has a dam height of 45 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 Spencer last inspected?
Spencer was last inspected on June 8, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.