Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
40602
| OR | | Columbia River | 1945 |
17080003
| Lower Columbia-Clatskanie | established |
40481
| OR | | Columbia River | 1984 |
17080003
| Lower Columbia-Clatskanie | established |
40468
| OR | | whole coast of OR | 1979 |
17080006
| Lower Columbia | established |
160518
| OR | Clatsop | Columbia River at Astoria, Oregon | 1942 |
17080006
| Lower Columbia | established |
40607
| OR | Multnomah | Columbia River 8 km below Bonneville Dam | 1936 |
17080001
| Lower Columbia-Sandy | established |
40458
| OR | Multnomah | Columbia River below Bonneville Dam | 1936 |
17080001
| Lower Columbia-Sandy | established |
45914
| WA | Skamania | Columbia River below Bonneville Dam | 1936 |
17080001
| Lower Columbia-Sandy | established |