Crown 3 Mine North Refuse Extension Dam
Illinois — Montgomery County — PERCHED RESERVOIR
Location
| State | Illinois |
| County | Montgomery |
| River | PERCHED RESERVOIR |
| Coordinates | 39.43738, -89.69667 |
Physical Characteristics
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 3,800 ft |
| NID Storage | 730 acre-ft |
| Max Storage | 730 acre-ft |
| Surface Area | 35 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | August 8, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 2000 |
| Primary Purpose | Other |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | J Oros Properties, LLC |
| Other Name | Perched Reservoir/Crown 3 |
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.