| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
40695
| OR | | Columbia River below McNary dam | 1995 |
17070101
| Middle Columbia-Lake Wallula | established |
|
40693
| OR | | Columbia River below the Dalles and John Day dams | 1995 |
17070105
| Middle Columbia-Hood | established |
|
1887493
| OR | Morrow | [No locality description provided] | 2023 |
17070101
| Middle Columbia-Lake Wallula | |
|
164030
| OR | Morrow | Umatilla National Wildlife Refuge | 2005 |
17070101
| Middle Columbia-Lake Wallula | established |
|
1887102
| OR | Umatilla | [No locality description provided] | 2021 |
17070101
| Middle Columbia-Lake Wallula | |
|
1887707
| OR | Umatilla | [No locality description provided] | 2023 |
17070103
| Umatilla | |
|
163907
| OR | Umatilla | Cold Springs National Wildlife Refuge | 2005 |
17070103
| Umatilla | established |
|
163984
| OR | Umatilla | McKay Creek National Wildlife Refuge | 2005 |
17070103
| Umatilla | established |
|
609676
| OR | Umatilla | UMATILLA R.2MI. ABOVE UMATILLA | 1967 |
17070103
| Umatilla | established |
|
268398
| OR | Umatilla | Umatilla River, at mouth | 1935 |
17070103
| Umatilla | established |
|
1886870
| OR | Wasco | [No locality description provided] | 2018 |
17070105
| Middle Columbia-Hood | |
|
46093
| WA | | Columbia River below the Dalles and John Day dams | 1995 |
17070105
| Middle Columbia-Hood | established |
|
46094
| WA | Benton | Columbia River below McNary Dam | 1995 |
17070101
| Middle Columbia-Lake Wallula | established |
|
1875710
| WA | Walla Walla | [No locality description provided] | 2024 |
17070102
| Walla Walla | |
|
163985
| WA | Walla Walla | McNary National Wildlife Refuge | 2005 |
17070101
| Middle Columbia-Lake Wallula | established |
|
244707
| WA | Walla Walla | Walla Walla River | 1977 |
17070102
| Walla Walla | established |