Oswego Lake Dam
Oregon — Clackamas County — TUALATIN RIVER (OFFSTREAM)
Location
| State | Oregon |
| County | Clackamas |
| River | TUALATIN RIVER (OFFSTREAM) |
| Coordinates | 45.41025, -122.66795 |
Physical Characteristics
| NID Height | 34 ft |
| Dam Height | 32 ft |
| Dam Length | 120 ft |
| NID Storage | 9,800 acre-ft |
| Max Storage | 7,000 acre-ft |
| Surface Area | 433 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Rated |
| EAP Status | Not Required |
| Last Inspection | November 19, 2020 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1921 |
| Primary Purpose | Hydroelectric |
| Dam Type | Concrete |
| Owner Type | Private |
| Owner | LAKE OSWEGO CORPORATION |
| Other Name | None |
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.