Waterloo Reservoir 1 Dam
Key Takeaway
Waterloo Reservoir 1 Dam is classified as significant hazard in Illinois. It was completed in 1924 and is 102 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 31 ft (taller than 66.2% in IL) |
| Dam Length | 350 ft |
| Dam Type | Earth |
| Max Storage | 86 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 845 cfs |
| Year Completed | 1924 (102 years old) |
| NID ID | IL00267 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF WATERLOO
Private
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Significant Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Waterloo Reservoir 1 Dam?
Waterloo Reservoir 1 Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Waterloo Reservoir 1 Dam?
Waterloo Reservoir 1 Dam is owned by CITY OF WATERLOO (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Waterloo Reservoir 1 Dam built?
Waterloo Reservoir 1 Dam was completed in 1924, making it 102 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 Waterloo Reservoir 1 Dam?
Waterloo Reservoir 1 Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Waterloo Reservoir 1 Dam?
Waterloo Reservoir 1 Dam has a dam height of 31 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 Reservoir 1 Dam last inspected?
Waterloo Reservoir 1 Dam was last inspected on August 17, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.