Pinckneyville Reservoir Dam
Illinois — Perry County — OPOSSUM CREEK
Location
| State | Illinois |
| County | Perry |
| River | OPOSSUM CREEK |
| Coordinates | 38.09678, -89.39685 |
Physical Characteristics
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 920 ft |
| NID Storage | 6,565 acre-ft |
| Max Storage | 6,565 acre-ft |
| Surface Area | 202 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | December 10, 2025 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1953 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | CITY OF PINCKNEYVILLE |
| Other Name | Pinckneyville 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.