Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
260301
| WA | Clark | Columbia River, near Fort Vancouver National Historic Site | 2005 |
17080003
| Lower Columbia-Clatskanie | established |
243022
| WA | Cowlitz | Columbia River, Dike Road, North Woodland | 2002 |
17080003
| Lower Columbia-Clatskanie | established |
243036
| WA | Cowlitz | Columbia River, Dike Road, North Woodland | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
243023
| WA | Cowlitz | Columbia River, Sportsmens Club boat launch, Kalama | 2002 |
17080003
| Lower Columbia-Clatskanie | established |