| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
243013
| OR | Clatsop | Columbia River, Blind Slough, Cathlamet Bay. | 2002 |
17080006
| Lower Columbia | established |
|
243014
| OR | Clatsop | Youngs Bay, Wallooskea tideflat. | 2002 |
17080006
| Lower Columbia | established |
|
243012
| OR | Columbia | Crane Slough, Suavie Island, Spatterdock patch | 2002 |
17090012
| Lower Willamette | established |
|
243015
| WA | Wahkiakum | Grays River, near Rosburg | 2002 |
17080006
| Lower Columbia | established |