| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
159757
| CA | Yolo | Yolo Bypass | 2001 |
18020163
| Lower Sacramento | established |
|
159721
| NV | | state non-specific | 2001 |
| | failed |
|
613466
| OR | Douglas | Site Name:Umpqua River. Township:22w, Range:9w, Section:14. Maps:250k-Roseburg, 24k-Devils Graveyard, 100k-Cottage Grove. Downstream Landmark:Weatherly Creek and Upstream Landmark:Lutsinger Creek. | 2001 |
17100303
| Umpqua | established |
|
613467
| WA | Island | [No locality string in original GBIF record] | 2001 |
17110019
| Puget Sound | established |