Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
295845
| OR | Malheur | Malheur River at RM 15 | 2006 |
17050117
| Lower Malheur | established |
295844
| OR | Malheur | Malheur River at RM 2 | 2006 |
17050117
| Lower Malheur | established |
295243
| OR | Malheur | Malheur River below Juntura | 2006 |
17050117
| Lower Malheur | established |
166850
| OR | Multnomah | McCarthy Creek, just upstream of Multnomah North. This property is on highway 30 between Portland and Scappoose. | 2006 |
17090012
| Lower Willamette | collected |
166849
| OR | Multnomah | Metro property known as Multnomah North on the west Bank of Multnomah Channel. This property is on highway 30 between Portland and Scappoose. | 2006 |
17090012
| Lower Willamette | collected |