Simpson Pond Dam
Key Takeaway
Simpson Pond Dam is classified as low hazard in Illinois. It was completed in 1973 and is 53 years old. Its primary use is water supply.
Physical Details
| Dam Height | 26 ft (taller than 47.1% in IL) |
| Dam Length | 250 ft |
| Dam Type | Earth |
| Max Storage | 113 acre-ft |
| Normal Storage | 72 acre-ft |
| Year Completed | 1973 (53 years old) |
| NID ID | IL00789 |
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
JOHN & CLAUDE SIMSON
Private
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High Hazard 55 ftFrequently Asked Questions
What is the hazard classification of Simpson Pond Dam?
Simpson Pond 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 Simpson Pond Dam?
Simpson Pond Dam is owned by JOHN & CLAUDE SIMSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Simpson Pond Dam built?
Simpson Pond Dam was completed in 1973, making it 53 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 Simpson Pond Dam?
Simpson Pond Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Simpson Pond Dam?
Simpson Pond 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 Simpson Pond Dam last inspected?
Simpson Pond Dam was last inspected on May 25, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.