Sill Lake Dam
Key Takeaway
Sill Lake Dam is classified as low hazard in Illinois. It was completed in 1951 and is 75 years old. Its primary use is other.
Physical Details
| Dam Height | 25 ft (taller than 42.6% in IL) |
| Dam Length | 165 ft |
| Dam Type | Earth |
| Max Storage | 51 acre-ft |
| Normal Storage | 37 acre-ft |
| Year Completed | 1951 (75 years old) |
| NID ID | IL01190 |
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
GERALD SILL
Private
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Low Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Sill Lake Dam?
Sill 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 Sill Lake Dam?
Sill Lake Dam is owned by GERALD SILL (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sill Lake Dam built?
Sill Lake Dam was completed in 1951, making it 75 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 Sill Lake Dam?
Sill Lake Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Sill Lake Dam?
Sill Lake Dam has a dam height of 25 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 Sill Lake Dam last inspected?
Sill Lake Dam was last inspected on May 19, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.