Waterloo Milldam
Key Takeaway
Waterloo Milldam is classified as low hazard in Iowa. It was completed in 1915 and is 111 years old.
Physical Details
| Dam Height | 7 ft |
| Dam Length | 546 ft |
| Dam Type | Gravity |
| Max Storage | 882 acre-ft |
| Normal Storage | 882 acre-ft |
| Surface Area | 250 acres |
| Drainage Area | 5,146 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1915 (111 years old) |
| NID ID | IA01320 |
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
City of Waterloo
Local Government
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High Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Waterloo Milldam?
Waterloo Milldam 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 Waterloo Milldam?
Waterloo Milldam is owned by City of Waterloo (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Waterloo Milldam built?
Waterloo Milldam was completed in 1915, making it 111 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
How tall is Waterloo Milldam?
Waterloo Milldam has a dam height of 7 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 Waterloo Milldam last inspected?
Waterloo Milldam was last inspected on September 17, 2014. Inspection dates indicate when a formal review occurred, not the results of that inspection.