Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
40614
| OR | | lower Willamette River | 1980 |
17090012
| Lower Willamette | established |
1334919
| OR | Benton | Crystal Lake Pond | 2013 |
17090003
| Upper Willamette | established |
1334920
| OR | Benton | Crystal Lake Pond | 2013 |
17090003
| Upper Willamette | established |
746033
| OR | Benton | Dunawi Creek near Corvallis Safeway on Philomath Blvd. | 2011 |
17090003
| Upper Willamette | established |
746026
| OR | Benton | LONG TOM R. 4MI. N. OF LARGE POND ALONG RIVER BENTON C | 1946 |
17090003
| Upper Willamette | established |
746040
| OR | Benton | LONG TOM R. POND POND OFF LONG TOM R. 4MI. N. OF MONROE | 1946 |
17090003
| Upper Willamette | established |
549595
| OR | Benton | Long Tom River. | 2000 |
17090003
| Upper Willamette | established |
746046
| OR | Benton | MCFADDENS POND | 1949 |
17090003
| Upper Willamette | established |
746028
| OR | Clackamas | BEAR CREEK | 1997 |
17090009
| Molalla-Pudding | established |
41920
| OR | Clackamas | Lake Oswego | 1996 |
17090012
| Lower Willamette | established |
549596
| OR | Clackamas | Pudding River. Township - 3S; Range - 1E; Section - 31. Maps: 250k - Vancouver; 24k - Canby; 100k - Oregon City. Downmark - Molalla River; Upmark - Oxbow Lake. | 2003 |
17090009
| Molalla-Pudding | established |
165298
| OR | Columbia | Big McNary Lake on Sauvie Island in the Columbia River | 1995 |
17090012
| Lower Willamette | established |
746030
| OR | Linn | Freeway Lakes | 2012 |
17090003
| Upper Willamette | established |
1751829
| OR | Marion | [No locality description provided] | 2024 |
17090007
| Middle Willamette | |
160516
| OR | Marion | Goose Lake, 7 miles north of Salem | 1942 |
17090007
| Middle Willamette | established |
746037
| OR | Marion | WILLAMETTE R. S. OF SALEM MARION CO | 1950 |
17090007
| Middle Willamette | established |
40559
| OR | Polk | Willamette River at Salem | 1893 |
17090007
| Middle Willamette | established |
1743675
| OR | Washington | [No locality description provided] | 2018 |
17090010
| Tualatin | |
1739155
| OR | Washington | [No locality description provided] | 2023 |
17090010
| Tualatin | |
1751981
| OR | Washington | [No locality description provided] | 2024 |
17090010
| Tualatin | |
1752290
| OR | Yamhill | [No locality description provided] | 2020 |
17090008
| Yamhill | |
1679170
| OR | Yamhill | [No locality description provided] | 2020 |
17090007
| Middle Willamette | |
746035
| OR | Yamhill | PALMER CREEK | 1997 |
17090008
| Yamhill | established |