Lasalle Co. Nuclear Station Cooling Lake Dam
Key Takeaway
Lasalle Co. Nuclear Station Cooling Lake Dam is classified as high hazard in Illinois. It was completed in 1977 and is 49 years old. Its primary use is other. 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 | 43 ft (taller than 86.6% in IL) |
| Dam Length | 37,942 ft |
| Dam Type | Earth |
| Max Storage | 44.2K acre-ft |
| Normal Storage | 31.7K acre-ft |
| Surface Area | 2,058 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 5,884 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | IL01102 |
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
EXELON GENERATION COMPANY, LLC
Private
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High Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Lasalle Co. Nuclear Station Cooling Lake Dam?
Lasalle Co. Nuclear Station Cooling Lake 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 Lasalle Co. Nuclear Station Cooling Lake Dam?
Lasalle Co. Nuclear Station Cooling Lake Dam is owned by EXELON GENERATION COMPANY, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lasalle Co. Nuclear Station Cooling Lake Dam built?
Lasalle Co. Nuclear Station Cooling Lake Dam was completed in 1977, making it 49 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 Lasalle Co. Nuclear Station Cooling Lake Dam?
Lasalle Co. Nuclear Station Cooling Lake Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lasalle Co. Nuclear Station Cooling Lake Dam?
Lasalle Co. Nuclear Station Cooling Lake Dam has a dam height of 43 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 Lasalle Co. Nuclear Station Cooling Lake Dam last inspected?
Lasalle Co. Nuclear Station Cooling Lake Dam was last inspected on September 30, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.