Chicago Botanical Gardens South Inlet Dam
Chicago Botanical Gardens South Inlet Dam is an earth dam located in Cook County, Illinois, built in 1970. It carries a Low hazard potential classification.
About Chicago Botanical Gardens South Inlet Dam
The primary purpose of Chicago Botanical Gardens South Inlet Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Chicago Botanical Gardens (local government). It impounds the Skokie River near Glencoe.
The dam stands 15 feet tall and stretches 132 feet across, creates a reservoir covering 51 acres, has a maximum storage capacity of 961 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 08/06/2024.
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Location
| State | Illinois |
| County | Cook |
| Nearest City | Glencoe |
| River/Stream | Skokie River |
| Coordinates | 42.14062, -87.78615 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 132 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 961 acre-ft |
| Max Storage | 961 acre-ft |
| Normal Storage | 350 acre-ft |
| Surface Area | 51 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 825 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CHICAGO BOTANICAL GARDENS |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 08/06/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL55082 |
| Federal ID | IL55082 |
| More Info | State Dam Safety Program |