Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1396081
| WA | Pacific | Columbia | 2004 |
17080006
| Lower Columbia | established |
1396031
| WA | Pacific | Columbia River | 2000 |
17080006
| Lower Columbia | established |
243132
| WA | Pacific | Columbia River, Baker bay, Fort Columbia State Park tide flats. | 2002 |
17080006
| Lower Columbia | established |
243126
| WA | Pacific | Columbia River, Baker Bay, Ilwaco Harbor tideflat, outer rocks | 2002 |
17080006
| Lower Columbia | established |
243139
| WA | Pacific | Columbia River, Baker Bay, Ilwaco Harbor. | 2002 |
17080006
| Lower Columbia | established |
243140
| WA | Pacific | Columbia River, Baker Bay, west side of east channel, near USCG station. | 2002 |
17080006
| Lower Columbia | established |
243127
| WA | Pacific | Columbia River, Fort Canby, boat launch, high and low marsh. | 2002 |
17080006
| Lower Columbia | established |
243143
| WA | Pacific | Columbia River, Ilwaco Channel, Fort Canby State Park, exterior jetty. | 2003 |
17080006
| Lower Columbia | established |
243144
| WA | Pacific | Columbia River, Ilwaco Channel, Fort Canby State Park, interior. | 2003 |
17080006
| Lower Columbia | established |
243124
| WA | Pacific | Columbia River, Megler Rest area, benthic rocks | 2002 |
17080006
| Lower Columbia | established |
243145
| WA | Wahkiakum | Columbia River, Grays Bay, Grays River mouth. | 2003 |
17080006
| Lower Columbia | established |
243131
| WA | Wahkiakum | Grays River, near Rosburg | 2002 |
17080006
| Lower Columbia | established |