Spring Valley Lake Dam
Key Takeaway
Spring Valley Lake Dam is classified as low hazard in Illinois. It was completed in 1973 and is 53 years old. Its primary use is recreation.
Physical Details
| Dam Height | 19 ft (taller than 26.3% in IL) |
| Dam Length | 750 ft |
| Dam Type | Earth |
| Max Storage | 187 acre-ft |
| Normal Storage | 88 acre-ft |
| Year Completed | 1973 (53 years old) |
| NID ID | IL00910 |
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
RYLAND HOMES
Private
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Significant Hazard 13 ftFrequently Asked Questions
What is the hazard classification of Spring Valley Lake Dam?
Spring Valley 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 Spring Valley Lake Dam?
Spring Valley Lake Dam is owned by RYLAND HOMES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Spring Valley Lake Dam built?
Spring Valley Lake 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 Spring Valley Lake Dam?
Spring Valley 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 Spring Valley Lake Dam?
Spring Valley Lake Dam has a dam height of 19 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 Spring Valley Lake Dam last inspected?
Spring Valley Lake Dam was last inspected on September 13, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.