Channahon Dam is an earth dam located in Will County, Illinois, built in 1930. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 1,200 ft long, taller than 50% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Channahon Dam
The primary purpose of Channahon Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Illinois Department of Natural Resources (state). It impounds the Dupage River near Channahon.
The dam stands 25 feet tall and stretches 1,200 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 750 acre-feet, and collects water from a drainage area of 374 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
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 11/02/2023.
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Location
| State | Illinois |
| County | Will |
| Nearest City | Channahon |
| River/Stream | Dupage River |
| Coordinates | 41.42212, -88.22863 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 750 acre-ft |
| Max Storage | 750 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 374 sq mi |
| Max Discharge | 15,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Illinois Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/02/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50394 |
| Federal ID | IL50394 |
| More Info | State Dam Safety Program |