| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
259164
| OR | Columbia | Goble, between 43rd and 44th milepost | 1924 |
17080003
| Lower Columbia-Clatskanie | collected |
|
854446
| OR | Columbia | Saint Helens | 1935 |
17080003
| Lower Columbia-Clatskanie | established |
|
854475
| OR | Columbia | Sauvie Island | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
|
854484
| OR | Columbia | Sauvie Island | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
|
259167
| OR | Columbia | St. Helens | 1935 |
17080003
| Lower Columbia-Clatskanie | collected |