Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
41328
| OR | Morrow | John Day Pool (Lake Umatilla), includes John Day Arm and Willow Creek Arm, on Columbia River behind John Day dam. | 2001 |
17070101
| Middle Columbia-Lake Wallula | established |
297247
| OR | Morrow | John Day Pool (Lake Umatilla), includes John Day Arm and Willow Creek Arm, on Columbia River behind John Day dam. | 2009 |
17070101
| Middle Columbia-Lake Wallula | established |
297257
| OR | Morrow | John Day Pool (Lake Umatilla), includes John Day Arm and Willow Creek Arm, on Columbia River behind John Day dam. | 2013 |
17070101
| Middle Columbia-Lake Wallula | established |