Hamburg Watershed Site M-1
Key Takeaway
Hamburg Watershed Site M-1 is classified as high hazard in Iowa. It was completed in 1961 and is 65 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 | 55 ft (taller than 97.5% in IA) |
| Dam Length | 450 ft |
| Dam Type | Earth |
| Max Storage | 375 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | IA00392 |
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
Fremont County SWCD
Local Government
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Low Hazard 23 ftFrequently Asked Questions
What is the hazard classification of Hamburg Watershed Site M-1?
Hamburg 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 Hamburg Watershed Site M-1?
Hamburg Watershed Site M-1 is owned by Fremont County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hamburg Watershed Site M-1 built?
Hamburg Watershed Site M-1 was completed in 1961, making it 65 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 Hamburg Watershed Site M-1?
Hamburg Watershed Site M-1 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 Hamburg Watershed Site M-1?
Hamburg Watershed Site M-1 has a dam height of 55 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 Hamburg Watershed Site M-1 last inspected?
Hamburg Watershed Site M-1 was last inspected on June 20, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.