Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1677468
| WA | Pacific | [No locality description provided] | 2021 |
17100106
| Willapa Bay | |
1525362
| WA | Pacific | East Main Drainage Ditch | 2018 |
17100106
| Willapa Bay | established |
1473568
| WA | Pacific | N shore of slough, near cranberry farms, S side of Cranberry Road, 0.5 km W of Clam Lake, Long Beach | 2016 |
17100106
| Willapa Bay | established |
1473552
| WA | Pacific | North of the town of Long Beach, in a drainage canal just south of Cranberry Road, approx. 0.5 km east of Hwy 103 | 2018 |
17100106
| Willapa Bay | established |