Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
40548
| OR | | Columbia River | 1924 |
17080003
| Lower Columbia-Clatskanie | established |
40576
| OR | | Willamette River and lower Columbia River | 1909 |
17080003
| Lower Columbia-Clatskanie | established |
239942
| WA | Clark | Columbia River | 2005 |
17080003
| Lower Columbia-Clatskanie | established |
239972
| WA | Cowlitz | Columbia River, in Cowlitz county | 2005 |
17080003
| Lower Columbia-Clatskanie | established |
239502
| WA | Lewis | Riffe Lake | 2005 |
17080005
| Lower Cowlitz | established |
272962
| WA | Lewis | Riffe Lake | 2006 |
17080005
| Lower Cowlitz | established |