Little River Watershed Site M-1
Key Takeaway
Little River Watershed Site M-1 is classified as high hazard in Iowa. It was completed in 1984 and is 42 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 | 61 ft (taller than 98.8% in IA) |
| Dam Length | 1,810 ft |
| Dam Type | Earth |
| Max Storage | 32.7K acre-ft |
| Normal Storage | 10.9K acre-ft |
| Surface Area | 787 acres |
| Drainage Area | 21 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1984 (42 years old) |
| NID ID | IA02263 |
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
Decatur County SWCD
Local Government
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Significant Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Little River Watershed Site M-1?
Little River Watershed Site M-1 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 Little River Watershed Site M-1?
Little River Watershed Site M-1 is owned by Decatur County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Little River Watershed Site M-1 built?
Little River Watershed Site M-1 was completed in 1984, making it 42 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 Little River Watershed Site M-1?
Little River Watershed Site M-1 serves the following purposes: Flood Risk Reduction, Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Little River Watershed Site M-1?
Little River Watershed Site M-1 has a dam height of 61 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 Little River Watershed Site M-1 last inspected?
Little River Watershed Site M-1 was last inspected on June 12, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.