Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
253615
| WA | | Columbia River, lower | 1960 |
17080003
| Lower Columbia-Clatskanie | established |
238844
| WA | | Columbia River, lower | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
1736999
| WA | Benton | Yakima River, left bank just downstream of I-182 bridges | 2024 |
17030003
| Lower Yakima | |
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 |
279738
| WA | Cowlitz | Kalama River, ~1.6 miles upstream of confluence with Columbia River. | 1989 |
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 |
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 |
253539
| WA | Whitman | Snake River. Above Lower Granite Dam. River Mile 128.0 | 2008 |
17060107
| Lower Snake-Tucannon | established |