Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
238850
| WA | | East Fork Lewis River in western Washington | 1997 |
17080002
| Lewis | established |
1653694
| WA | Clark | Curtain Creek, wetland areas and tributaries | 2020 |
17080003
| Lower Columbia-Clatskanie | established |
243174
| WA | Cowlitz | Columbia River, Longview drainage ditch, Solo Storage entrance | 2002 |
17080003
| Lower Columbia-Clatskanie | established |