Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
40441
| OR | | Columbia River | 1876 |
17080003
| Lower Columbia-Clatskanie | established |
40443
| OR | | Columbia River | 1885 |
17080003
| Lower Columbia-Clatskanie | established |
40442
| OR | | Columbia River | 1886 |
17080003
| Lower Columbia-Clatskanie | established |
40417
| OR | | Columbia River | 1896 |
17080003
| Lower Columbia-Clatskanie | established |
40471
| OR | | Columbia River | 1976 |
17080003
| Lower Columbia-Clatskanie | established |
40445
| OR | | Columbia River | 1979 |
17080003
| Lower Columbia-Clatskanie | established |
40610
| OR | | Columbia River | 1980 |
17080003
| Lower Columbia-Clatskanie | established |
40421
| OR | | Columbia River as far up as the Cascades, 150 miles from the mouth | 1896 |
17080001
| Lower Columbia-Sandy | established |
40425
| OR | | Off Knappton (=Knapp?) | 1896 |
17080006
| Lower Columbia | established |
274470
| OR | Columbia | Columbia River (R.M. 54) at Crims Island [~7 miles below Longview, WA] | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
40424
| OR | Columbia | Columbia River at Cowlitz River | 1896 |
17080003
| Lower Columbia-Clatskanie | established |
40426
| OR | Columbia | Columbia River off Cottonwood Island near the mouth of the | 1896 |
17080003
| Lower Columbia-Clatskanie | established |
1675477
| OR | Multnomah | Bonneville Dam, OR, USA | 2018 |
17080001
| Lower Columbia-Sandy | |
747264
| WA | Clark | COLUMBIA R. BELOW MOUTH OF WILLAMETTE R. B | 1953 |
17080003
| Lower Columbia-Clatskanie | established |
238389
| WA | Clark | Vancouver Lake | 1998 |
17080003
| Lower Columbia-Clatskanie | collected |
268372
| WA | Pacific | Cape Disappointment, at the mouth of the Columbia River | 1935 |
17080006
| Lower Columbia | established |
45761
| WA | Pacific | Columbia River at Ilwaco | 1896 |
17080006
| Lower Columbia | established |
45762
| WA | Pacific | Columbia River off Chinook | 1896 |
17080006
| Lower Columbia | established |