Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
239125
| WA | | Columbia River | 1970 |
17020010
| Upper Columbia-Entiat | established |
238850
| WA | | East Fork Lewis River in western Washington | 1997 |
17080002
| Lewis | established |
46095
| WA | | state non-specific | 1961 |
17000000
| Pacific Northwest Region | established |
45913
| WA | | state non-specific | 1979 |
17000000
| Pacific Northwest Region | collected |
45995
| WA | | state non-specific | 1992 |
17000000
| Pacific Northwest Region | established |
45911
| WA | Benton | a few spring fed ponds near the junction of the Snake and Columbia Rivers | 1979 |
17020016
| Upper Columbia-Priest Rapids | established |
238849
| WA | Benton | John Day Reservoir (aka Lake Umatilla) near Irrigon, OR. | 1994 |
17070101
| Middle Columbia-Lake Wallula | established |
238851
| WA | Benton | lower Yakima River near the Columbia River. | 1996 |
17030003
| Lower Yakima | established |
1653694
| WA | Clark | Curtain Creek, wetland areas and tributaries | 2020 |
17080003
| Lower Columbia-Clatskanie | established |
243174
| WA | Cowlitz | Columbia River, Longview drainage ditch, Solo Storage entrance | 2002 |
17080003
| Lower Columbia-Clatskanie | established |
45908
| WA | Franklin | a few spring fed ponds near the junction of the Snake and Columbia Rivers | 1979 |
17020016
| Upper Columbia-Priest Rapids | established |
45912
| WA | Walla Walla | A few spring fed ponds near the junction of the Snake and Columbia Rivers | 1979 |
17060110
| Lower Snake | established |
164005
| WA | Walla Walla | McNary National Wildlife Refuge | 2005 |
17070101
| Middle Columbia-Lake Wallula | established |