| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
282852
| WA | Clallam | Elwha River mouth | 2005 |
17110020
| Dungeness-Elwha | established |
|
282851
| WA | Clallam | Lake Aldwell delta | 2000 |
17110020
| Dungeness-Elwha | established |
|
282849
| WA | Clallam | Lake Sutherland | 1991 |
17110020
| Dungeness-Elwha | established |
|
282850
| WA | Clallam | Lake Sutherland outlet to the Elwha River | 1997 |
17110020
| Dungeness-Elwha | established |
|
1711191
| WA | Clark | Columbia River at Fort Vancouver, Washington | 1836 |
17080003
| Lower Columbia-Clatskanie | |
|
1885875
| WA | Whatcom | Diablo Lake | 2020 |
17110005
| Upper Skagit | established |
|
1885873
| WA | Whatcom | Ross Lake | 2019 |
17110005
| Upper Skagit | established |
|
1885874
| WA | Whatcom | Ross Lake | 2020 |
17110005
| Upper Skagit | established |
|
282853
| WA | Whatcom | Ross Lake in northern Cascades | 2002 |
17110005
| Upper Skagit | established |
|
282854
| WA | Whatcom | Ross Lake in northern Cascades | 2009 |
17110005
| Upper Skagit | established |