Ryan Henschal Watershed Site A-2
Key Takeaway
Ryan Henschal Watershed Site A-2 is classified as low hazard in Iowa. It was completed in 1976 and is 50 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 39 ft (taller than 82.4% in IA) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 391 acre-ft |
| Normal Storage | 143 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1976 (50 years old) |
| NID ID | IA01867 |
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
West Pottawattamie County SWCD
Local Government
Nearby Dams
Ryan Henschal Watershed Site F-3
Pottawattamie, IA
Low Hazard 32 ftRyan Henschal Watershed Site F-2
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Low Hazard 41 ftRyan Henschal Watershed Site E-2
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Low Hazard 49 ftRyan Henschal Watershed Site F-1
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Low Hazard 27 ftIndian Creek Watershed Site 4
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Low Hazard 52 ftSimon Run Watershed Site 9-3e
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Low Hazard 35 ftIndian Creek Watershed Site 5
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Low Hazard 36 ftRyan Henschal Watershed Site H-1
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Low Hazard 39 ftFrequently Asked Questions
What is the hazard classification of Ryan Henschal Watershed Site A-2?
Ryan Henschal Watershed Site A-2 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 Ryan Henschal Watershed Site A-2?
Ryan Henschal Watershed Site A-2 is owned by West Pottawattamie County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ryan Henschal Watershed Site A-2 built?
Ryan Henschal Watershed Site A-2 was completed in 1976, making it 50 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 Ryan Henschal Watershed Site A-2?
Ryan Henschal Watershed Site A-2 serves the following purposes: Flood Risk Reduction, Other, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Ryan Henschal Watershed Site A-2?
Ryan Henschal Watershed Site A-2 has a dam height of 39 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 Ryan Henschal Watershed Site A-2 last inspected?
Ryan Henschal Watershed Site A-2 was last inspected on September 25, 2003. Inspection dates indicate when a formal review occurred, not the results of that inspection.