Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
166656
| WA | | East Fork Lewis River in western Washington | 2004 |
17080002
| Lewis | established |
166655
| WA | | East Fork Lewis River in western Washington | 2006 |
17080002
| Lewis | established |
261902
| WA | Cowlitz | Columbia River at Martin Island [just N of Woodland] | 2009 |
17080003
| Lower Columbia-Clatskanie | established |
261901
| WA | Cowlitz | Columbia River, at the head of Carrolls Channel [just S of Kelso] | 2009 |
17080003
| Lower Columbia-Clatskanie | established |
551035
| WA | Skamania | Duncan Spring Channel | 2012 |
17080001
| Lower Columbia-Sandy | established |
551036
| WA | Skamania | Duncan Spring Channel | 2012 |
17080001
| Lower Columbia-Sandy | established |
551037
| WA | Skamania | Duncan Spring Channel | 2012 |
17080001
| Lower Columbia-Sandy | established |
547362
| WA | Skamania | Duncan Spring Channel | 2013 |
17080001
| Lower Columbia-Sandy | established |
551032
| WA | Skamania | Duncan Spring Channel | 2013 |
17080001
| Lower Columbia-Sandy | established |
551033
| WA | Skamania | Duncan Spring Channel | 2013 |
17080001
| Lower Columbia-Sandy | established |
551034
| WA | Skamania | Duncan Spring Channel | 2013 |
17080001
| Lower Columbia-Sandy | established |