Cottonwood Creek Upper
Key Takeaway
Cottonwood Creek Upper is classified as significant hazard in Idaho. It was completed in 1961 and is 65 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 18 ft (taller than 20.1% in ID) |
| Dam Length | 840 ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 17 sq mi |
| Max Discharge | 3,540 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | ID00565 |
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
Local Government
Nearby Dams
Cottonwood Creek Middle
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Significant Hazard 20 ftCottonwood Creek Lower
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Significant Hazard 60 ftStewart Gulch Main Fork
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Significant Hazard 76 ftCrane Gulch Main Fork
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Significant Hazard 46 ftStewart Gulch North Fork
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Significant Hazard 38 ftBarber
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Significant Hazard 26 ftHidden Springs Cell 3a
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Significant Hazard 43 ftFrequently Asked Questions
What is the hazard classification of Cottonwood Creek Upper?
Cottonwood Creek Upper 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 Cottonwood Creek Upper?
Cottonwood Creek Upper is owned by information not available (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cottonwood Creek Upper built?
Cottonwood Creek Upper was completed in 1961, making it 65 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 Cottonwood Creek Upper?
Cottonwood Creek Upper 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.
How tall is Cottonwood Creek Upper?
Cottonwood Creek Upper has a dam height of 18 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 Cottonwood Creek Upper last inspected?
Cottonwood Creek Upper was last inspected on September 11, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.