Upper Sterling
Illinois — Whiteside County — Rock Creek
Location
| State | Illinois |
| County | Whiteside |
| River | Rock Creek |
| Coordinates | 41.78910, -89.67931 |
Physical Characteristics
| NID Height | 10 ft |
| Dam Height | 9 ft |
| Dam Length | 1,170 ft |
| NID Storage | 7,000 acre-ft |
| Max Storage | 7,000 acre-ft |
| Surface Area | 2,400 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | July 27, 2022 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1907 |
| Primary Purpose | Hydroelectric |
| Dam Type | Gravity |
| Owner Type | Local Government |
| Owner | Illinois Dept of Transportation |
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.