Herrin Reservoir 1 Dam
Key Takeaway
Herrin Reservoir 1 Dam is classified as significant hazard in Illinois. It was completed in 1915 and is 111 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 6 ft (taller than 0.1% in IL) |
| Dam Length | 489 ft |
| Dam Type | Earth |
| Max Storage | 271 acre-ft |
| Normal Storage | 50 acre-ft |
| Year Completed | 1915 (111 years old) |
| NID ID | IL00050 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF HERRIN
Local Government
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What is the hazard classification of Herrin Reservoir 1 Dam?
Herrin Reservoir 1 Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Herrin Reservoir 1 Dam?
Herrin Reservoir 1 Dam is owned by CITY OF HERRIN (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Herrin Reservoir 1 Dam built?
Herrin Reservoir 1 Dam was completed in 1915, making it 111 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 Herrin Reservoir 1 Dam?
Herrin Reservoir 1 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 Herrin Reservoir 1 Dam?
Herrin Reservoir 1 Dam has a dam height of 6 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 Herrin Reservoir 1 Dam last inspected?
Herrin Reservoir 1 Dam was last inspected on June 8, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.