Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1702724
| OR | Clatsop | Colombia River off Marine Dr., Astoria, OR | 2008 |
17080006
| Lower Columbia | |
1702725
| OR | Clatsop | Colombia River off Marine Dr., Astoria, OR | 2009 |
17080006
| Lower Columbia | |
1702726
| OR | Clatsop | Colombia River off Marine Dr., Astoria, OR | 2010 |
17080006
| Lower Columbia | |
1702727
| OR | Clatsop | Colombia River off Marine Dr., Astoria, OR | 2011 |
17080006
| Lower Columbia | |
1635414
| WA | Clark | Columbia River, at Vancouver | 2006 |
17080003
| Lower Columbia-Clatskanie | established |
615375
| WA | King | Lake Washington | 2011 |
17110012
| Lake Washington | unknown |
1702728
| WA | King | Lake Washington off Evergreen Point Floating Bridge, WA | 2011 |
17110012
| Lake Washington | |
1702729
| WA | King | Lake Washington off Evergreen Point Floating Bridge, WA | 2012 |
17110012
| Lake Washington | |
1702730
| WA | King | Lake Washington off Evergreen Point Floating Bridge, WA | 2013 |
17110012
| Lake Washington | |