Salt Lake Co.-Big Cottonwood (Spencer`S)
Key Takeaway
Salt Lake Co.-Big Cottonwood (Spencer`S) is classified as high hazard in Utah. It was completed in 1984 and is 42 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Length | 1,420 ft |
| Dam Type | Earth |
| Max Storage | 132 acre-ft |
| Normal Storage | 79 acre-ft |
| Drainage Area | 48 sq mi |
| Max Discharge | 1,030 cfs |
| Year Completed | 1984 (42 years old) |
| NID ID | UT00090 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
SALT LAKE COUNTY PUBLIC WORKS
Local Government
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Significant HazardFrequently Asked Questions
What is the hazard classification of Salt Lake Co.-Big Cottonwood (Spencer`S)?
Salt Lake Co.-Big Cottonwood (Spencer`S) is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Salt Lake Co.-Big Cottonwood (Spencer`S)?
Salt Lake Co.-Big Cottonwood (Spencer`S) is owned by SALT LAKE COUNTY PUBLIC WORKS (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Salt Lake Co.-Big Cottonwood (Spencer`S) built?
Salt Lake Co.-Big Cottonwood (Spencer`S) was completed in 1984, making it 42 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 Salt Lake Co.-Big Cottonwood (Spencer`S)?
Salt Lake Co.-Big Cottonwood (Spencer`S) serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Salt Lake Co.-Big Cottonwood (Spencer`S) last inspected?
Salt Lake Co.-Big Cottonwood (Spencer`S) was last inspected on July 13, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.