Oakwood Country Club Lake Dam is an earth dam located in Henry County, Illinois, built in 1964. It carries a Significant hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 243 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 Oakwood Country Club Lake Dam
The primary purpose of Oakwood Country Club Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Oakwood Country Club (private). It impounds the Trib Rock River near Coal Valley.
The dam stands 25 feet tall and stretches 243 feet across, and has a maximum storage capacity of 77 acre-feet. Completed in 1964, the structure is well into its service life at over 50 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 05/06/2025.
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Location
| State | Illinois |
| County | Henry |
| Nearest City | Coal Valley |
| River/Stream | Trib Rock River |
| Coordinates | 41.44583, -90.42257 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 243 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 77 acre-ft |
| Max Storage | 77 acre-ft |
| Normal Storage | 45 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Oakwood Country Club |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/06/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00482 |
| Federal ID | IL00482 |
| More Info | State Dam Safety Program |