Norris City Reservoir Dam
Key Takeaway
Norris City Reservoir Dam is classified as high hazard in Illinois. It was completed in 1937 and is 89 years old. Its primary use is water supply. 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 | 20 ft (taller than 28.2% in IL) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 428 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 4,409 cfs |
| Year Completed | 1937 (89 years old) |
| NID ID | IL00581 |
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
CITY OF NORRIS CITY
Local Government
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Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of Norris City Reservoir Dam?
Norris City Reservoir 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 Norris City Reservoir Dam?
Norris City Reservoir Dam is owned by CITY OF NORRIS CITY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Norris City Reservoir Dam built?
Norris City Reservoir Dam was completed in 1937, making it 89 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 City Reservoir Dam?
Norris City Reservoir Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Norris City Reservoir Dam?
Norris City Reservoir Dam has a dam height of 20 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 City Reservoir Dam last inspected?
Norris City Reservoir Dam was last inspected on June 2, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.