Dongola Lake Dam
Key Takeaway
Dongola Lake Dam is classified as high hazard in Illinois. It was completed in 1970 and is 56 years old. Its primary use is recreation. 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 | 34 ft (taller than 73.9% in IL) |
| Dam Length | 610 ft |
| Dam Type | Earth |
| Max Storage | 1.7K acre-ft |
| Normal Storage | 550 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 18,624 cfs |
| Year Completed | 1970 (56 years old) |
| NID ID | IL00026 |
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
VILLAGE OF DONGOLA
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Dongola Lake Dam?
Dongola 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 Dongola Lake Dam?
Dongola Lake Dam is owned by VILLAGE OF DONGOLA (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dongola Lake Dam built?
Dongola Lake Dam was completed in 1970, making it 56 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 Dongola Lake Dam?
Dongola Lake Dam serves the following purposes: Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dongola Lake Dam?
Dongola Lake Dam has a dam height of 34 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 Dongola Lake Dam last inspected?
Dongola Lake Dam was last inspected on August 6, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.