Lentman Lake Dam
Key Takeaway
Lentman Lake Dam is classified as low hazard in Illinois. It was completed in 1965 and is 61 years old. Its primary use is recreation.
Physical Details
| Dam Height | 12 ft (taller than 10% in IL) |
| Dam Length | 310 ft |
| Dam Type | Earth |
| Max Storage | 198 acre-ft |
| Normal Storage | 74 acre-ft |
| Year Completed | 1965 (61 years old) |
| NID ID | IL01134 |
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-AMERICAN WATER COMPANY
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Lentman Lake Dam?
Lentman 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 Lentman Lake Dam?
Lentman Lake Dam is owned by ILLINOIS-AMERICAN WATER COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lentman Lake Dam built?
Lentman Lake Dam was completed in 1965, making it 61 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 Lentman Lake Dam?
Lentman 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 Lentman Lake Dam?
Lentman Lake Dam has a dam height of 12 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 Lentman Lake Dam last inspected?
Lentman Lake Dam was last inspected on September 30, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.