Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
279745
| OR | Clatsop | Columbia River estuary. | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
279688
| OR | Clatsop | Lewis and Clark River, ca. 2 miles above mouth. | 1998 |
17080006
| Lower Columbia | established |
279744
| OR | Clatsop | Miller Sands Island, in the Columbia River, 5 miles upriver from Astoria. | 1993 |
17080006
| Lower Columbia | established |
279678
| OR | Columbia | Columbia River | 1981 |
17080003
| Lower Columbia-Clatskanie | established |
279676
| OR | Columbia | Columbia River | 1983 |
17080003
| Lower Columbia-Clatskanie | established |
274473
| OR | Columbia | Columbia River (R.M. 54) at Crims Island [~7 miles below Longview, WA] | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
274520
| OR | Columbia | Columbia River (R.M. 54) at Crims Island [~7 miles below Longview, WA] | 2008 |
17080003
| Lower Columbia-Clatskanie | established |
253617
| OR | Columbia | Columbia River, lower | 1960 |
17080003
| Lower Columbia-Clatskanie | established |
877348
| OR | Columbia | McBride Creek, at mouth | 2015 |
17080003
| Lower Columbia-Clatskanie | established |
1675029
| OR | Multnomah | [No locality description provided] | 2020 |
17080001
| Lower Columbia-Sandy | |
253615
| WA | | Columbia River, lower | 1960 |
17080003
| Lower Columbia-Clatskanie | established |
238844
| WA | | Columbia River, lower | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
238846
| WA | Clark | Columbia River, below the Bonneville Dam at the north end of Government Island. | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
1428198
| WA | Clark | Salmon Creek, approximately 2 miles west (downstream) of I-5 | 2018 |
17080003
| Lower Columbia-Clatskanie | established |
253611
| WA | Clark | Vancouver Lake | 2008 |
17080003
| Lower Columbia-Clatskanie | established |
279522
| WA | Cowlitz | Columbia River, tidal lagoon near Longview. | 1993 |
17080003
| Lower Columbia-Clatskanie | established |
279740
| WA | Cowlitz | Kalama River, ~1.6 miles upstream of confluence with Columbia River. | 1989 |
17080003
| Lower Columbia-Clatskanie | established |
279738
| WA | Cowlitz | Kalama River, ~1.6 miles upstream of confluence with Columbia River. | 1989 |
17080003
| Lower Columbia-Clatskanie | established |
253610
| WA | Cowlitz | Kress Lake, on the Kalama River | 2008 |
17080003
| Lower Columbia-Clatskanie | established |
253607
| WA | Cowlitz | Lake Sacajawea | 2008 |
17080003
| Lower Columbia-Clatskanie | established |
253613
| WA | Cowlitz | Lewis River | 2008 |
17080002
| Lewis | established |
279521
| WA | Skamania | Hardy Creek, "Hardy Slough" section, 1 mi above junction with Columbia River. | 1997 |
17080001
| Lower Columbia-Sandy | established |
238847
| WA | Skamania | Ives Island, 2 miles downstream of Bonneville Dam, on the Columbia River | 2003 |
17080001
| Lower Columbia-Sandy | established |
238848
| WA | Skamania | Pierce Island, 2 miles downstream of Bonneville Dam, on the Columbia River | 2003 |
17080001
| Lower Columbia-Sandy | established |
862378
| WA | Skamania | Yeon Spring, at mouth | 2015 |
17080001
| Lower Columbia-Sandy | established |