Mt. Olive City Lake Dam
Key Takeaway
Mt. Olive City Lake Dam is classified as low hazard in Illinois. It was completed in 1938 and is 88 years old. Its primary use is water supply.
Physical Details
| Dam Height | 31 ft (taller than 66.2% in IL) |
| Dam Length | 470 ft |
| Dam Type | Earth |
| Max Storage | 657 acre-ft |
| Normal Storage | 457 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 159 cfs |
| Year Completed | 1938 (88 years old) |
| Year Modified | 1976 |
| NID ID | IL01047 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF MOUNT OLIVE
Local Government
Nearby Dams
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Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Mt. Olive City Lake Dam?
Mt. Olive City Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Mt. Olive City Lake Dam?
Mt. Olive City Lake Dam is owned by CITY OF MOUNT OLIVE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mt. Olive City Lake Dam built?
Mt. Olive City Lake 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 Mt. Olive City Lake Dam?
Mt. Olive City Lake 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 Mt. Olive City Lake Dam?
Mt. Olive City Lake Dam has a dam height of 31 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 Mt. Olive City Lake Dam last inspected?
Mt. Olive City Lake Dam was last inspected on August 11, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.