| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
1891807
| OR | Umatilla | [No locality description provided] | 2025 |
17070101
| Middle Columbia-Lake Wallula | |
|
1891864
| OR | Umatilla | [No locality description provided] | 2025 |
17070101
| Middle Columbia-Lake Wallula | |
|
1876228
| WA | Klickitat | [No locality description provided] | 2024 |
17070105
| Middle Columbia-Hood | |
|
238823
| WA | Klickitat | John Day Reservior (aka Lake Umatilla) | 2003 |
17070101
| Middle Columbia-Lake Wallula | established |
|
238828
| WA | Klickitat | Rowland Lake | 2003 |
17070105
| Middle Columbia-Hood | collected |
|
240576
| WA | Walla Walla | Mill Creek Lake | 2005 |
17070102
| Walla Walla | established |
|
238822
| WA | Walla Walla | Walla Walla River | 2003 |
17070102
| Walla Walla | collected |