Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
40695
| OR | | Columbia River below McNary dam | 1995 |
17070101
| Middle Columbia-Lake Wallula | established |
164030
| OR | Morrow | Umatilla National Wildlife Refuge | 2005 |
17070101
| Middle Columbia-Lake Wallula | established |
46094
| WA | Benton | Columbia River below McNary Dam | 1995 |
17070101
| Middle Columbia-Lake Wallula | established |
163985
| WA | Walla Walla | McNary National Wildlife Refuge | 2005 |
17070101
| Middle Columbia-Lake Wallula | established |