Superior 4 Dam
Illinois — Macoupin County — WEST FORK CAHOKIA CREEK
Location
| State | Illinois |
| County | Macoupin |
| River | WEST FORK CAHOKIA CREEK |
| Coordinates | 39.05805, -89.86085 |
Physical Characteristics
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | — |
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Surface Area | — |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | January 26, 1988 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1950 |
| Primary Purpose | Other |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | UNKNOWN |
| Other Name | Wilsonville Lake |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.