Upper Sterling
Key Takeaway
Upper Sterling is classified as low hazard in Illinois. It was completed in 1907 and is 119 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 9 ft (taller than 3.9% in IL) |
| Dam Length | 1,170 ft |
| Dam Type | Gravity |
| Max Storage | 7.0K acre-ft |
| Normal Storage | 7.0K acre-ft |
| Surface Area | 2,400 acres |
| Drainage Area | 8,750 sq mi |
| Max Discharge | 23,000 cfs |
| Year Completed | 1907 (119 years old) |
| NID ID | IL50078 |
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
Illinois Dept of Transportation
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Upper Sterling?
Upper Sterling 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 Upper Sterling?
Upper Sterling is owned by Illinois Dept of Transportation (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Sterling built?
Upper Sterling was completed in 1907, making it 119 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 Upper Sterling?
Upper Sterling serves the following purposes: Hydroelectric, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Sterling?
Upper Sterling has a dam height of 9 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 Upper Sterling last inspected?
Upper Sterling was last inspected on July 27, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.