Held Watershed Site E-3
Key Takeaway
Held Watershed Site E-3 is classified as high hazard in Iowa. It was completed in 1978 and is 48 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 | 43 ft (taller than 89% in IA) |
| Dam Length | 530 ft |
| Dam Type | Earth |
| Max Storage | 118 acre-ft |
| Normal Storage | 47 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1978 (48 years old) |
| NID ID | IA01857 |
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
Plymouth County SWCD
Local Government
Nearby Dams
Held Watershed Site E-4
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Low Hazard 33 ftHeld Watershed Site B-1
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Low Hazard 26 ftHeld Watershed Site B-5
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Low Hazard 24 ftHeld Watershed Site B-3
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Low Hazard 43 ftHeld Watershed Site B-2
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Low Hazard 43 ftFrequently Asked Questions
What is the hazard classification of Held Watershed Site E-3?
Held Watershed Site E-3 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 Held Watershed Site E-3?
Held Watershed Site E-3 is owned by Plymouth County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Held Watershed Site E-3 built?
Held Watershed Site E-3 was completed in 1978, making it 48 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 Held Watershed Site E-3?
Held Watershed Site E-3 serves the following purposes: Flood Risk Reduction, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Held Watershed Site E-3?
Held Watershed Site E-3 has a dam height of 43 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 Held Watershed Site E-3 last inspected?
Held Watershed Site E-3 was last inspected on August 3, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.