Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
255632
| OR | Clatsop | Hunt Creek | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
258110
| OR | Clatsop | Plympton Creek | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
241985
| OR | Clatsop/Columbia | Columbia River, lower | 1946 |
17080003
| Lower Columbia-Clatskanie | established |
258112
| OR | Columbia | Beaver Creek (middle) | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
255214
| OR | Columbia | Clatskanie River (lower) | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
258114
| OR | Columbia | Clatskanie River (middle) | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
858923
| OR | Columbia | Deer Island | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
258102
| OR | Columbia | Deer Island Slough | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
258104
| OR | Columbia | Goble Creek | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
255213
| OR | Columbia | Green Creek (Columbia side channel) | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
258103
| OR | Columbia | Tide Creek | 2007 |
17080003
| Lower Columbia-Clatskanie | established |
858956
| OR | Multnomah | Camas | 2008 |
17080003
| Lower Columbia-Clatskanie | established |
241986
| OR | Multnomah | Columbia River, mainstem | 1946 |
17080003
| Lower Columbia-Clatskanie | established |