Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
246179
| OR | Columbia | Clatskanie Slough | 2003 |
17080003
| Lower Columbia-Clatskanie | collected |
242682
| OR | Columbia | Clatskanie Slough - Beaver Slough and Beaver Dredge Cut | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
237315
| OR | Columbia | Columbia River, lower | 2005 |
17080003
| Lower Columbia-Clatskanie | established |
1671064
| OR | Multnomah | [No locality description provided] | 2016 |
17080003
| Lower Columbia-Clatskanie | |
246176
| OR | Multnomah | Blue Lake, 3 miles northwest of Troutdale | 1981 |
17080003
| Lower Columbia-Clatskanie | collected |
859078
| OR | Multnomah | Camas | 1981 |
17080003
| Lower Columbia-Clatskanie | established |
859071
| OR | Multnomah | Camas | 1981 |
17080003
| Lower Columbia-Clatskanie | established |
859041
| OR | Multnomah | Camas | 1981 |
17080003
| Lower Columbia-Clatskanie | established |
859085
| OR | Multnomah | Camas | 1981 |
17080003
| Lower Columbia-Clatskanie | established |