Mcgraw Lake Dam
Key Takeaway
Mcgraw Lake Dam is classified as low hazard in Illinois. It was completed in 1927 and is 99 years old. Its primary use is recreation.
Physical Details
| Dam Height | 12 ft (taller than 10% in IL) |
| Dam Length | 270 ft |
| Dam Type | Earth |
| Max Storage | 54 acre-ft |
| Normal Storage | 29 acre-ft |
| Year Completed | 1927 (99 years old) |
| NID ID | IL00800 |
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
L. MCGRAW
Private
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Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Mcgraw Lake Dam?
Mcgraw 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 Mcgraw Lake Dam?
Mcgraw Lake Dam is owned by L. MCGRAW (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mcgraw Lake Dam built?
Mcgraw Lake Dam was completed in 1927, making it 99 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 Mcgraw Lake Dam?
Mcgraw 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 Mcgraw Lake Dam?
Mcgraw 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 Mcgraw Lake Dam last inspected?
Mcgraw Lake Dam was last inspected on April 26, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.