| Specimen ID# | State | County | Locality | Year | HUC Number | Drainage Name | Status |
|---|
| 260764 | BC | | Strait of Georgia | 2007 | | | established |
| 243160 | OR | Clatsop | Youngs Bay, Wallooskea tideflat. | 2002 | 17080006 | Lower Columbia | established |
| 243161 | OR | Clatsop | Columbia River, Astoria West Moorage Basin | 2002 | 17080006 | Lower Columbia | established |
| 243162 | OR | Clatsop | Columbia River, Astoria West Moorage Basin | 2002 | 17080006 | Lower Columbia | established |
| 243165 | OR | Clatsop | Columbia River, Tansey Point | 2002 | 17080006 | Lower Columbia | established |
| 243166 | OR | Clatsop | Columbia River, Trestle Bay, Jetty Lagoon | 2002 | 17080006 | Lower Columbia | established |
| 243167 | OR | Clatsop | Youngs River, mouth in Youngs Bay | 2002 | 17080006 | Lower Columbia | established |
| 243168 | OR | Clatsop | Lewis and Clark River (lower) | 2002 | 17100106 | Lower Columbia | established |
| 243159 | OR | Clatsop | Columbia River, Youngs Bay, Astoria Yacht Club near net pens. | 2002 | 17080006 | Lower Columbia | established |
| 161221 | WA | | Puget Sound | 1940 | 17110019 | Puget Sound | established |
| 156995 | WA | | coastal waters | 1997 | 17100100 | Washington Coastal | established |
| 241644 | WA | Skagit | Samish Bay, small float in Samish River near Edison. | 1998 | 17110002 | Strait of Georgia | established |
| 241109 | WA | King | Duwamish River, Kellogg Island Passage | 2000 | 17110013 | Duwamish | established |
| 241110 | WA | King | Duwamish River, Turning Basin | 2000 | 17110013 | Duwamish | established |
| 241197 | WA | Pacific | Willapa Bay, Upper Palix River | 2000 | 17100106 | Willapa Bay | established |
| 243163 | WA | Pacific | Columbia River, Baker Bay, Ilwaco Harbor tideflat, outer rocks | 2002 | 17080006 | Lower Columbia | established |
| 243164 | WA | Pacific | Columbia River, Fort Canby, boat launch, high and low marsh. | 2002 | 17080006 | Lower Columbia | established |
| 243169 | WA | Pacific | Columbia River, Ilwaco Channel, Fort Canby State Park, exterior jetty. | 2003 | 17080006 | Lower Columbia | established |