Alto Pass Reservoir Dam
Illinois — Union County
Location
| State | Illinois |
| County | Union |
| Coordinates | 37.57948, -89.30611 |
Physical Characteristics
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 450 ft |
| NID Storage | 296 acre-ft |
| Max Storage | 296 acre-ft |
| Surface Area | 15 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1964 |
| Primary Purpose | Recreation |
| Dam Type | — |
| Owner Type | — |
| Owner | ALTO PASS WD |
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.