Saganashkee Slough 1 Dam
Key Takeaway
Saganashkee Slough 1 Dam is classified as significant hazard in Illinois. It was completed in 1948 and is 78 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 14 ft (taller than 14.5% in IL) |
| Dam Length | 950 ft |
| Dam Type | Earth |
| Max Storage | 2.4K acre-ft |
| Normal Storage | 718 acre-ft |
| Year Completed | 1948 (78 years old) |
| NID ID | IL00870 |
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
FOREST PRESERVE DISTRICT OF COOK COUNTY
Local Government
Nearby Dams
Saganashkee Slough 2 Dam
Cook, IL
Low Hazard 8 ftSaganashkee Slough 6 Dam
Cook, IL
Significant Hazard 7 ftSaganashkee Slough 7 Dam
Cook, IL
Low Hazard 9 ftBullfrog Lake Dam
Cook, IL
Significant Hazard 17 ftMaple Lake Dam
Cook, IL
Significant Hazard 25 ftHoly Family Villa Lake Dam
Cook, IL
Low Hazard 12 ftPapoose Lake Dam
Cook, IL
Significant Hazard 12 ftTampier Lake Dam
Cook, IL
Significant Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Saganashkee Slough 1 Dam?
Saganashkee Slough 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 Saganashkee Slough 1 Dam?
Saganashkee Slough 1 Dam is owned by FOREST PRESERVE DISTRICT OF COOK COUNTY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Saganashkee Slough 1 Dam built?
Saganashkee Slough 1 Dam was completed in 1948, making it 78 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 Saganashkee Slough 1 Dam?
Saganashkee Slough 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 Saganashkee Slough 1 Dam?
Saganashkee Slough 1 Dam has a dam height of 14 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 Saganashkee Slough 1 Dam last inspected?
Saganashkee Slough 1 Dam was last inspected on October 2, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.