Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
859061
| OR | Gilliam | Arlington | 2012 |
17070101
| Middle Columbia-Lake Wallula | established |
1399623
| OR | Gilliam | Columbia River spur. N side of I-84 | 2009 |
17070101
| Middle Columbia-Lake Wallula | unknown |
274071
| OR | Gilliam | Spur of the Columbia River on North Side of I-84 | 2009 |
17070101
| Middle Columbia-Lake Wallula | established |
243819
| OR | Morrow | Columbia River, Lake Umatilla, at Irrigon. | 2006 |
17070101
| Middle Columbia-Lake Wallula | established |
237317
| OR | Morrow | Middle Columbia drainage | 2005 |
17070101
| Middle Columbia-Lake Wallula | established |
859049
| OR | Umatilla | Umatilla | 2012 |
17070101
| Middle Columbia-Lake Wallula | established |
859067
| OR | Umatilla | Umatilla | 2012 |
17070101
| Middle Columbia-Lake Wallula | established |