Cottonwood-Green Valley Subws 75+70 #2
Key Takeaway
Cottonwood-Green Valley Subws 75+70 #2 is classified as low hazard in Iowa. It was completed in 1966 and is 60 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 26 ft (taller than 24.7% in IA) |
| Dam Length | 518 ft |
| Dam Type | Earth |
| Max Storage | 50 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | IA00744 |
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
Monona County SWCD
Local Government
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Low Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Cottonwood-Green Valley Subws 75+70 #2?
Cottonwood-Green Valley Subws 75+70 #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 Cottonwood-Green Valley Subws 75+70 #2?
Cottonwood-Green Valley Subws 75+70 #2 is owned by Monona County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cottonwood-Green Valley Subws 75+70 #2 built?
Cottonwood-Green Valley Subws 75+70 #2 was completed in 1966, making it 60 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-Green Valley Subws 75+70 #2?
Cottonwood-Green Valley Subws 75+70 #2 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 Cottonwood-Green Valley Subws 75+70 #2?
Cottonwood-Green Valley Subws 75+70 #2 has a dam height of 26 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.