Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
157478
| WA | | state non-specific | 2003 |
17000000
| Pacific Northwest Region | established |
1613660
| WA | Walla Walla | Snake River, somewhere between two fixed points in 2-11 ft of water. Start of transect are the coordinates used for site location, end of transect is 46.57211667, -118.4964167 | 2019 |
17060110
| Lower Snake | unknown |
1613828
| WA | Whitman | Snake River at river mile 83.5, in Little Goose Reservoir (study site 83.5N) | 2019 |
17060107
| Lower Snake-Tucannon | unknown |