Fern Ridge Dam
Oregon — Lane County — LONG TOM RIVER
Location
| State | Oregon |
| County | Lane |
| River | LONG TOM RIVER |
| Coordinates | 44.11802, -123.29219 |
Physical Characteristics
| NID Height | 49 ft |
| Dam Height | 46 ft |
| Dam Length | 6,610 ft |
| NID Storage | 121,000 acre-ft |
| Max Storage | 121,000 acre-ft |
| Surface Area | 9,360 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | June 23, 2025 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1941 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Earth |
| Owner Type | Federal |
| Owner | USACE - Portland District |
| Other Name | Fern Ridge 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.