| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
242800
| OR | | Willamette River | 2007 |
17090000
| Willamette | established |
|
1658692
| OR | Benton | Long Tom River | 2000 |
17090003
| Upper Willamette | unknown |
|
1669030
| OR | Benton | Long Tom River | 2000 |
17090003
| Upper Willamette | unknown |
|
40387
| OR | Benton | Muddy Creek, 12 miles south of Corvallis | 1981 |
17090003
| Upper Willamette | unknown |
|
40680
| OR | Benton | Squaw Creek at Corvallis (Dunawi Creek) | 1981 |
17090003
| Upper Willamette | unknown |
|
1803574
| OR | Clackamas | Huxley Lake | 2015 |
17090011
| Clackamas | |
|
40391
| OR | Linn | private pond near Wiley Creek (trib of South Santiam River, about 10 miles above Foster | 1981 |
17090006
| South Santiam | unknown |
|
40388
| OR | Linn | Waverly Lake, in Albany | 1981 |
17090003
| Upper Willamette | extirpated |
|
1803564
| OR | Multnomah | [No locality description provided] | 2019 |
17090010
| Tualatin | |
|
1679704
| OR | Multnomah | [No locality description provided] | 2021 |
17090012
| Lower Willamette | |
|
243173
| OR | Multnomah | Columbia Slough, Kelly Point Park | 2002 |
17090012
| Lower Willamette | established |