Steel
Key Takeaway
Steel is classified as low hazard in Illinois. It was completed in 1912 and is 114 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 6 ft (taller than 0.1% in IL) |
| Dam Length | 775 ft |
| Dam Type | Gravity |
| Max Storage | 670 acre-ft |
| Normal Storage | 410 acre-ft |
| Surface Area | 570 acres |
| Drainage Area | 11,000 sq mi |
| Year Completed | 1912 (114 years old) |
| NID ID | IL50001 |
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 Rock Island
State Government
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Significant Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Steel?
Steel 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 Steel?
Steel is owned by City of Rock Island (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Steel built?
Steel was completed in 1912, making it 114 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 Steel?
Steel serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Steel?
Steel has a dam height of 6 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 Steel last inspected?
Steel was last inspected on June 6, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.