Marissa Reservoir Dam
Key Takeaway
Marissa Reservoir Dam is classified as significant hazard in Illinois. It was completed in 1938 and is 88 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 | 400 ft |
| Dam Type | Earth |
| Max Storage | 134 acre-ft |
| Normal Storage | 90 acre-ft |
| Year Completed | 1938 (88 years old) |
| NID ID | IL00374 |
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
VILLAGE OF MARISSA
Local Government
Nearby Dams
Marissa Recreation Association North Lake Dam
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Significant Hazard 27 ftMarissa Recreation Association South Lake Dam
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Significant Hazard 32 ftShaufler Pond Dam
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Low Hazard 19 ftPrairie State Energy Raw Water Dam
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High Hazard 40 ftPeabody/Randolph Plant/Slurry Pond Dam
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Low Hazard 45 ftPeabody Coulterville/Gateway/Slurry Cell 5 Dam
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Low Hazard 66 ftCoulterville Coal/Gateway Mine/Slurry Cell 4 Dam
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Low Hazard 34 ftCoulterville Coal/Gateway Mine/Slurry Cell 3 Dam
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High Hazard 41 ftFrequently Asked Questions
What is the hazard classification of Marissa Reservoir Dam?
Marissa Reservoir 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 Marissa Reservoir Dam?
Marissa Reservoir Dam is owned by VILLAGE OF MARISSA (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Marissa Reservoir Dam built?
Marissa Reservoir Dam was completed in 1938, making it 88 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 Marissa Reservoir Dam?
Marissa Reservoir Dam serves the following purposes: Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Marissa Reservoir Dam?
Marissa Reservoir 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 Marissa Reservoir Dam last inspected?
Marissa Reservoir Dam was last inspected on June 8, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.