Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
40448
| OR | | Columbia River drainage, lower | 1894 |
17080000
| Lower Columbia | established |
40505
| OR | | Columbia River, lower, and tributaries | 1894 |
17080003
| Lower Columbia-Clatskanie | established |
274472
| OR | Columbia | Columbia River (R.M. 54) at Crims Island [~7 miles below Longview, WA] | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
4
| OR | Multnomah | Mucks Lake on the Columbia River, near the mouth of the Sandy (Sundial Beach) | 1923 |
17080003
| Lower Columbia-Clatskanie | established |
40482
| OR | Multnomah | Troutdale on the Sandy River near Columbia River (West of the Willamette River?) | 1881 |
17080001
| Lower Columbia-Sandy | established |
45874
| WA | | Columbia River, lower | 1894 |
17080003
| Lower Columbia-Clatskanie | established |
163992
| WA | Clark | Ridgefield National Wildlife Refuge | 2005 |
17080003
| Lower Columbia-Clatskanie | established |
163997
| WA | Clark | Steigerwald Lake National Wildlife Refuge | 2005 |
17080001
| Lower Columbia-Sandy | established |
163914
| WA | Skamania | Franz Lake National Wildlife Refuge [Along the Columbia River, 2.2 km (1.4 mi) WSW of Skamania] | 2005 |
17080001
| Lower Columbia-Sandy | established |
163990
| WA | Skamania | Pierce National Wildlife Refuge | 2005 |
17080001
| Lower Columbia-Sandy | established |