Willow Creek Subwatershed Site M-4
Key Takeaway
Willow Creek Subwatershed Site M-4 is classified as low hazard in Iowa. It was completed in 1968 and is 58 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 25 ft (taller than 19.3% in IA) |
| Dam Length | 647 ft |
| Dam Type | Earth |
| Max Storage | 50 acre-ft |
| Normal Storage | 11 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | IA01024 |
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
Woodbury County SWCD
Local Government
Nearby Dams
Willow Creek Subwatershed Site 10-3
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Low Hazard 34 ftBig Whiskey 1 Subwatershed Site 3-1
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Significant Hazard 38 ftWillow Creek Subwatershed Site M-3
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Low Hazard 30 ftLittle Beaver Subwatershed M-10001
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Low Hazard 38 ftLittle Beaver Subwatershed 5-8154
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Low Hazard 36 ftLittle Beaver Subwatershed M-16730
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Low Hazard 40 ftLittle Beaver Subwatershed 5b-5000
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Low Hazard 36 ftWillow Creek Subwatershed Site M-2
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Low Hazard 38 ftFrequently Asked Questions
What is the hazard classification of Willow Creek Subwatershed Site M-4?
Willow Creek Subwatershed Site M-4 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 Willow Creek Subwatershed Site M-4?
Willow Creek Subwatershed Site M-4 is owned by Woodbury County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Willow Creek Subwatershed Site M-4 built?
Willow Creek Subwatershed Site M-4 was completed in 1968, making it 58 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 Willow Creek Subwatershed Site M-4?
Willow Creek Subwatershed Site M-4 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Willow Creek Subwatershed Site M-4?
Willow Creek Subwatershed Site M-4 has a dam height of 25 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 Willow Creek Subwatershed Site M-4 last inspected?
Willow Creek Subwatershed Site M-4 was last inspected on October 13, 1967. Inspection dates indicate when a formal review occurred, not the results of that inspection.