Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
40584
| OR | | Willamette River, lower, and lower Columbia River | 1909 |
17080003
| Lower Columbia-Clatskanie | established |
40583
| OR | Columbia | Columbia River, lower | 1946 |
17080003
| Lower Columbia-Clatskanie | established |
41554
| OR | Columbia | Prescott Slough, along highway 30 at Prescott Junction, west of Trojan Nuclear Power Plant. | 2001 |
17080003
| Lower Columbia-Clatskanie | established |
295990
| OR | Columbia | Prescott Slough, along highway 30 at Prescott Junction, west of Trojan Nuclear Power Plant. | 2009 |
17080003
| Lower Columbia-Clatskanie | established |
296000
| OR | Columbia | Prescott Slough, along highway 30 at Prescott Junction, west of Trojan Nuclear Power Plant. | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
238899
| WA | Clark | Salmon Creek (Columbia River near Vancouver, WA) | 2003 |
17080003
| Lower Columbia-Clatskanie | failed |
161206
| WA | Cowlitz | a slough of the Kalama River near Kalama | 1930 |
17080003
| Lower Columbia-Clatskanie | established |
160513
| WA | Cowlitz | Columbia River near Kalama, WA | 1942 |
17080003
| Lower Columbia-Clatskanie | established |
268481
| WA | Cowlitz | Kalama River (lower) | 1936 |
17080003
| Lower Columbia-Clatskanie | established |
238887
| WA | Cowlitz | Lake Sacajawea | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
239985
| WA | Cowlitz | Sacajawea Lake | 2005 |
17080003
| Lower Columbia-Clatskanie | established |
1702989
| WA | Cowlitz | Slough off of Kalama river near the city of Kalama | 1933 |
17080003
| Lower Columbia-Clatskanie | |