Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
163864
| OR | Morrow | Umatilla National Wildlife Refuge | 2005 |
17070101
| Middle Columbia-Lake Wallula | established |
163834
| OR | Umatilla | Cold Springs National Wildlife Refuge | 2005 |
17070103
| Umatilla | established |
163849
| OR | Umatilla | McKay Creek National Wildlife Refuge | 2005 |
17070103
| Umatilla | established |
1699894
| WA | Klickitat | [No locality description provided] | 2021 |
17070105
| Middle Columbia-Hood | |
616856
| WA | Klickitat | Balch Lake, south shoreline | 1995 |
17070105
| Middle Columbia-Hood | unknown |
242771
| WA | Klickitat | Conboy Lake National Wildlife Refuge | 1997 |
17070106
| Klickitat | established |
163837
| WA | Klickitat | Conboy Lake National Wildlife Refuge | 2005 |
17070106
| Klickitat | established |
616817
| WA | Klickitat | Grand Dalles, along Columbia River | 1938 |
17070105
| Middle Columbia-Hood | unknown |
616819
| WA | Klickitat | Grand Dalles, along Columbia River | 1938 |
17070105
| Middle Columbia-Hood | unknown |
616820
| WA | Klickitat | Grand Dalles, along Columbia River | 1938 |
17070105
| Middle Columbia-Hood | unknown |
616821
| WA | Klickitat | Grand Dalles, along Columbia River | 1938 |
17070105
| Middle Columbia-Hood | unknown |
616818
| WA | Skamania | Stevenson, 2 mi W | 1938 |
17070105
| Middle Columbia-Hood | unknown |
616812
| WA | Skamania | Stevenson, ca1 mi W | 1931 |
17070105
| Middle Columbia-Hood | unknown |
616811
| WA | Skamania | Stevenson, ca1 mi W | 1931 |
17070105
| Middle Columbia-Hood | unknown |
163850
| WA | Walla Walla | McNary National Wildlife Refuge | 2005 |
17070101
| Middle Columbia-Lake Wallula | established |