Smokey Hollow Subwatershed Site 2
Key Takeaway
Smokey Hollow Subwatershed Site 2 is classified as high hazard in Iowa. It was completed in 1986 and is 40 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 Height | 49 ft (taller than 94.6% in IA) |
| Dam Length | 249 ft |
| Dam Type | Earth |
| Max Storage | 69 acre-ft |
| Normal Storage | 10 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1986 (40 years old) |
| NID ID | IA02312 |
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
Woodbury County SWCD
Local Government
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Low Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Smokey Hollow Subwatershed Site 2?
Smokey Hollow Subwatershed Site 2 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 Smokey Hollow Subwatershed Site 2?
Smokey Hollow Subwatershed Site 2 is owned by Woodbury County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Smokey Hollow Subwatershed Site 2 built?
Smokey Hollow Subwatershed Site 2 was completed in 1986, making it 40 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 Smokey Hollow Subwatershed Site 2?
Smokey Hollow Subwatershed Site 2 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 Smokey Hollow Subwatershed Site 2?
Smokey Hollow Subwatershed Site 2 has a dam height of 49 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 Smokey Hollow Subwatershed Site 2 last inspected?
Smokey Hollow Subwatershed Site 2 was last inspected on June 24, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.