Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1396075
| OR | Columbia | Clatskanie River | 1999 |
17080003
| Lower Columbia-Clatskanie | established |
242991
| OR | Columbia | Trojan Power Plant Pond, Trojan. | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
1419067
| OR | Multnomah | Jantzen Bay Marina | 2017 |
17080003
| Lower Columbia-Clatskanie | established |
1322460
| WA | Clark | Lacamas Lake at mouth of Lacamas Creek | 2016 |
17080001
| Lower Columbia-Sandy | established |
1417705
| WA | Clark | Ridgefield Marina, located at 5 Mill Street, Ridgefield, WA | 2017 |
17080003
| Lower Columbia-Clatskanie | established |
1417706
| WA | Clark | Ridgefield Marina, located at 5 Mill Street, Ridgefield, WA | 2017 |
17080003
| Lower Columbia-Clatskanie | established |
1417707
| WA | Clark | Ridgefield Marina, located at 5 Mill Street, Ridgefield, WA | 2017 |
17080003
| Lower Columbia-Clatskanie | established |
1417708
| WA | Clark | Ridgefield Marina, located at 5 Mill Street, Ridgefield, WA | 2017 |
17080003
| Lower Columbia-Clatskanie | established |
1467272
| WA | Clark | Vancouver Lake | 2018 |
17080003
| Lower Columbia-Clatskanie | established |
886051
| WA | Cowlitz | Lake Sacajawea | 2015 |
17080003
| Lower Columbia-Clatskanie | established |
614617
| WA | Cowlitz | Silver Lake | 1998 |
17080005
| Lower Cowlitz | unknown |
1418818
| WA | Cowlitz | Silver Lake shoreline | 2017 |
17080005
| Lower Cowlitz | established |
1418823
| WA | Cowlitz | Silver Lake, WA near Streeter's Resort area | 2017 |
17080005
| Lower Cowlitz | established |
1633842
| WA | Lewis | Lake Scanewa, Cowlitz Falls Day Use Park | 2019 |
17080004
| Upper Cowlitz | established |
614615
| WA | Lewis | Mayfield Lake (Reservoir) | 1998 |
17080005
| Lower Cowlitz | unknown |
1418820
| WA | Lewis | Mayfield lake, WA | 2017 |
17080005
| Lower Cowlitz | established |
614609
| WA | Skamania | Franz Lake | 1998 |
17080001
| Lower Columbia-Sandy | unknown |