Dam A-41
Key Takeaway
Dam A-41 is classified as low hazard in Illinois. It was completed in 1965 and is 61 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 24 ft (taller than 40.5% in IL) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 620 acre-ft |
| Normal Storage | 400 acre-ft |
| Surface Area | 43 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 828 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | IL00122 |
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
US FISH AND WILDLIFE SERVICE
Federal Government
Nearby Dams
Bleyar Lake Dam
Williamson, IL
Low Hazard 20 ftDevil`S Kitchen Dam
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High Hazard 83 ftHerrin Reservoir 2 Dam
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Significant Hazard 27 ftVisitor Center Dam
Williamson, IL
Low Hazard 21 ftPleasant Valley Lake Dam
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Low Hazard 21 ftLittle Grassy Dam
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High Hazard 88 ftA16 Pond Dam
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Low Hazard 13 ftLake Como Dam
Johnson, IL
Significant Hazard 41 ftFrequently Asked Questions
What is the hazard classification of Dam A-41?
Dam A-41 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 Dam A-41?
Dam A-41 is owned by US FISH AND WILDLIFE SERVICE (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dam A-41 built?
Dam A-41 was completed in 1965, making it 61 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 Dam A-41?
Dam A-41 serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dam A-41?
Dam A-41 has a dam height of 24 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 Dam A-41 last inspected?
Dam A-41 was last inspected on June 20, 2011. Inspection dates indicate when a formal review occurred, not the results of that inspection.