Norris Slurry Impoundment
Key Takeaway
Norris Slurry Impoundment is classified as high hazard in Illinois. It was completed in 1955 and is 71 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 | 50 ft (taller than 91.7% in IL) |
| Dam Length | 5,280 ft |
| Dam Type | Earth |
| Max Storage | 1.0K acre-ft |
| Normal Storage | 800 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 10 cfs |
| Year Completed | 1955 (71 years old) |
| Year Modified | 1997 |
| NID ID | IL50367 |
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
CHAD HERMAN
Private
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Low Hazard 45 ftFrequently Asked Questions
What is the hazard classification of Norris Slurry Impoundment?
Norris Slurry Impoundment 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 Norris Slurry Impoundment?
Norris Slurry Impoundment is owned by CHAD HERMAN (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Norris Slurry Impoundment built?
Norris Slurry Impoundment was completed in 1955, making it 71 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 Slurry Impoundment?
Norris Slurry Impoundment 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 Norris Slurry Impoundment?
Norris Slurry Impoundment has a dam height of 50 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 Slurry Impoundment last inspected?
Norris Slurry Impoundment was last inspected on June 2, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.