West Lake Dam is an earth dam located in Crawford County, Illinois, built in 1948. It carries a Significant hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 505 ft long. 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 West Lake Dam
The primary purpose of West Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by West Lake Corp. (private). It impounds the Trib Bennett Creek near Stoy.
The dam stands 16 feet tall and stretches 505 feet across, and has a maximum storage capacity of 153 acre-feet. Completed in 1948, the structure is well-established, with more than 75 years of service.
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 05/27/2022.
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Location
| State | Illinois |
| County | Crawford |
| Nearest City | Stoy |
| River/Stream | Trib Bennett Creek |
| Coordinates | 39.00089, -87.80383 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 505 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 153 acre-ft |
| Max Storage | 153 acre-ft |
| Normal Storage | 83 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | West Lake Corp. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/27/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00600 |
| Federal ID | IL00600 |
| More Info | State Dam Safety Program |