Lower Elmhurst Dam
Key Takeaway
Lower Elmhurst Dam is classified as high hazard in Illinois. It was completed in 1994 and is 32 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 | 15 ft (taller than 16.3% in IL) |
| Dam Length | 2,200 ft |
| Dam Type | Earth |
| Max Storage | 93 acre-ft |
| Normal Storage | 0 acre-ft |
| Year Completed | 1994 (32 years old) |
| NID ID | IL50304 |
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
CITY OF ELMHURST
Local Government
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Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Lower Elmhurst Dam?
Lower Elmhurst Dam 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 Lower Elmhurst Dam?
Lower Elmhurst Dam is owned by CITY OF ELMHURST (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lower Elmhurst Dam built?
Lower Elmhurst Dam was completed in 1994, making it 32 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 Lower Elmhurst Dam?
Lower Elmhurst Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lower Elmhurst Dam?
Lower Elmhurst Dam has a dam height of 15 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 Lower Elmhurst Dam last inspected?
Lower Elmhurst Dam was last inspected on May 3, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.