Lake Benton Dam
Key Takeaway
Lake Benton Dam is classified as significant hazard in Illinois. It was completed in 1939 and is 87 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 22 ft (taller than 35.1% in IL) |
| Dam Length | 1,100 ft |
| Dam Type | Earth |
| Max Storage | 873 acre-ft |
| Normal Storage | 371 acre-ft |
| Year Completed | 1939 (87 years old) |
| NID ID | IL00057 |
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 BENTON
Local Government
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Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Lake Benton Dam?
Lake Benton 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 Lake Benton Dam?
Lake Benton Dam is owned by CITY OF BENTON (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Benton Dam built?
Lake Benton Dam was completed in 1939, making it 87 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 Lake Benton Dam?
Lake Benton Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Benton Dam?
Lake Benton Dam has a dam height of 22 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 Lake Benton Dam last inspected?
Lake Benton Dam was last inspected on June 22, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.