Harrisburg Reservoir Dam
Illinois — Saline County — MIDDLE FORK SALINE-OFFSTREAM
Location
| State | Illinois |
| County | Saline |
| River | MIDDLE FORK SALINE-OFFSTREAM |
| Coordinates | 37.76298, -88.52659 |
Physical Characteristics
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 8,400 ft |
| NID Storage | 887 acre-ft |
| Max Storage | 887 acre-ft |
| Surface Area | 73 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | October 16, 2025 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1920 |
| Primary Purpose | Other |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | CITY OF HARRISBURG |
| Other Name | Harrisburg 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.