Alleman Lake Dam
Key Takeaway
Alleman Lake Dam is classified as low hazard in Illinois. It was completed in 1975 and is 51 years old. Its primary use is recreation.
Physical Details
| Dam Height | 26 ft (taller than 47.1% in IL) |
| Dam Length | 1,285 ft |
| Dam Type | Earth |
| Max Storage | 80 acre-ft |
| Normal Storage | 63 acre-ft |
| Year Completed | 1975 (51 years old) |
| NID ID | IL01207 |
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
ROY ALLEMAN
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Alleman Lake Dam?
Alleman 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 Alleman Lake Dam?
Alleman Lake Dam is owned by ROY ALLEMAN (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Alleman Lake Dam built?
Alleman Lake Dam was completed in 1975, making it 51 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 Alleman Lake Dam?
Alleman Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Alleman Lake Dam?
Alleman Lake Dam has a dam height of 26 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 Alleman Lake Dam last inspected?
Alleman Lake Dam was last inspected on May 9, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.