South Side Detention Basin Berm 1 Dam
Key Takeaway
South Side Detention Basin Berm 1 Dam is classified as high hazard in Illinois. It was completed in 2011 and is 15 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 | 12 ft (taller than 10% in IL) |
| Dam Length | 2,103 ft |
| Dam Type | Earth |
| Max Storage | 73 acre-ft |
| Normal Storage | 0 acre-ft |
| Drainage Area | 0 sq mi |
| Year Completed | 2011 (15 years old) |
| NID ID | IL50636 |
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 MATTOON
Local Government
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Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of South Side Detention Basin Berm 1 Dam?
South Side Detention Basin Berm 1 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 South Side Detention Basin Berm 1 Dam?
South Side Detention Basin Berm 1 Dam is owned by CITY OF MATTOON (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Side Detention Basin Berm 1 Dam built?
South Side Detention Basin Berm 1 Dam was completed in 2011, making it 15 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 South Side Detention Basin Berm 1 Dam?
South Side Detention Basin Berm 1 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 South Side Detention Basin Berm 1 Dam?
South Side Detention Basin Berm 1 Dam has a dam height of 12 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 South Side Detention Basin Berm 1 Dam last inspected?
South Side Detention Basin Berm 1 Dam was last inspected on June 3, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.