Norris Lake Dam
Key Takeaway
Norris Lake Dam is classified as significant hazard in Illinois. It was completed in 1948 and is 78 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 32.8% in IL) |
| Dam Length | 348 ft |
| Dam Type | Earth |
| Max Storage | 59 acre-ft |
| Normal Storage | 28 acre-ft |
| Year Completed | 1948 (78 years old) |
| NID ID | IL00414 |
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
HALSEY NORRIS TRUST
Private
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What is the hazard classification of Norris Lake Dam?
Norris Lake 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 Norris Lake Dam?
Norris Lake Dam is owned by HALSEY NORRIS TRUST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Norris Lake Dam built?
Norris Lake Dam was completed in 1948, making it 78 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 Norris Lake Dam?
Norris Lake Dam serves the following purposes: Other, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Norris Lake Dam?
Norris Lake Dam has a dam height of 21 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 Norris Lake Dam last inspected?
Norris Lake Dam was last inspected on August 16, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.