Gw60 Dam
Gw60 Dam is an earth dam located in DuPage County, Illinois. It carries a Low hazard potential classification.
About Gw60 Dam
The primary purpose of Gw60 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 Dupage County Department Of Transportati (local government). It impounds the Trib 3 West Branch Dupage R near Winfield.
The dam stands 14 feet tall and stretches 1,000 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 558 acre-feet, and collects water from a drainage area of 0 square miles.
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 11/12/2025.
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Location
| State | Illinois |
| County | DuPage |
| Nearest City | Winfield |
| River/Stream | Trib 3 West Branch Dupage R |
| Coordinates | 41.90497, -88.18597 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 1,000 ft |
Storage & Hydraulics
| NID Storage | 558 acre-ft |
| Max Storage | 558 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | DUPAGE COUNTY DEPARTMENT OF TRANSPORTATI |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 11/12/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL55055 |
| Federal ID | IL55055 |
| More Info | State Dam Safety Program |