Hobson Road Dam
Hobson Road Dam is an other dam located in DuPage County, Illinois, built in 1991. It carries a Significant hazard potential classification.
About Hobson Road Dam
The primary purpose of Hobson Road 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 Village Of Woodridge (local government). It impounds the East Branch Dupage River near Belmont.
The dam stands 20 feet tall and stretches 162 feet across, and has a maximum storage capacity of 660 acre-feet. Completed in 1991, the structure is 35 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 08/25/2025.
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Location
| State | Illinois |
| County | DuPage |
| Nearest City | Belmont |
| River/Stream | East Branch Dupage River |
| Coordinates | 41.75932, -88.07227 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 162 ft |
| Year Completed | 1991 (35 years old) |
Storage & Hydraulics
| NID Storage | 660 acre-ft |
| Max Storage | 660 acre-ft |
| Max Discharge | 5,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | VILLAGE OF WOODRIDGE |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 08/25/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50139 |
| Federal ID | IL50139 |
| More Info | State Dam Safety Program |