Vienna Reservoir Dam
Key Takeaway
Vienna Reservoir Dam is classified as low hazard in Illinois. It was completed in 1968 and is 58 years old. Its primary use is water supply.
Physical Details
| Dam Height | 13 ft (taller than 12.5% in IL) |
| Dam Length | 2,100 ft |
| Dam Type | Earth |
| Max Storage | 55 acre-ft |
| Normal Storage | 23 acre-ft |
| Year Completed | 1968 (58 years old) |
| NID ID | IL01088 |
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 VIENNA
Local Government
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What is the hazard classification of Vienna Reservoir Dam?
Vienna Reservoir Dam 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 Vienna Reservoir Dam?
Vienna Reservoir Dam is owned by CITY OF VIENNA (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Vienna Reservoir Dam built?
Vienna Reservoir Dam was completed in 1968, making it 58 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 Vienna Reservoir Dam?
Vienna Reservoir 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 Vienna Reservoir Dam?
Vienna Reservoir Dam has a dam height of 13 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 Vienna Reservoir Dam last inspected?
Vienna Reservoir Dam was last inspected on August 25, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.