Timber Lake Dam
Illinois — Carroll County — TRIB EAST JOHNSON CREEK
Location
| State | Illinois |
| County | Carroll |
| River | TRIB EAST JOHNSON CREEK |
| Coordinates | 42.05189, -89.94142 |
Physical Characteristics
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 466 ft |
| NID Storage | 155 acre-ft |
| Max Storage | 155 acre-ft |
| Surface Area | — |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | October 22, 2025 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1960 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | TIMBER LAKE CAMPGROUND |
| Other Name | Timber 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.