Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
40613
| OR | | lower Willamette drainage | 1980 |
17090000
| Willamette | established |
241422
| OR | Linn | Cox Creek, a tributary of the Willamette River located in Albany | 1996 |
17090003
| Upper Willamette | established |
41733
| OR | Marion | St. Louis ponds (7), 2 miles west of Gervais on west side of freeway. | 2001 |
17090009
| Molalla-Pudding | unknown |
297153
| OR | Marion | St. Louis ponds (7), 2 miles west of Gervais on west side of freeway. | 2009 |
17090009
| Molalla-Pudding | established |
297160
| OR | Marion | St. Louis ponds (7), 2 miles west of Gervais on west side of freeway. | 2013 |
17090009
| Molalla-Pudding | established |