L & N Reservoir
Illinois — Jefferson County — TRIB CASEY FORK
Location
| State | Illinois |
| County | Jefferson |
| River | TRIB CASEY FORK |
| Coordinates | 38.32171, -88.91495 |
Physical Characteristics
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 720 ft |
| NID Storage | 353 acre-ft |
| Max Storage | 353 acre-ft |
| Surface Area | — |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | May 27, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1910 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | CITY OF MOUNT VERNON |
| Other Name | L & N Reservoir |
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.