Hidden Valley Lake Dam
Illinois — Ogle County — TRIB STILLMAN CREEK
Location
| State | Illinois |
| County | Ogle |
| River | TRIB STILLMAN CREEK |
| Coordinates | 42.03572, -89.14262 |
Physical Characteristics
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 505 ft |
| NID Storage | 256 acre-ft |
| Max Storage | 256 acre-ft |
| Surface Area | 19 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | June 4, 2024 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1968 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | RASMUSSEN & GIANNINI |
| Other Name | Hidden Valley Lake |
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.