Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1335051
| OR | Benton | Long Tom River. | 2000 |
17090003
| Upper Willamette | established |
40511
| OR | Benton | overflow pond on Marys River south of Corvallis | 1945 |
17090003
| Upper Willamette | established |
40510
| OR | Benton | Willamette River just south of Corvallis | 1945 |
17090003
| Upper Willamette | established |
1335165
| OR | Lane | Oregon State Hwy. #36, 2.5 mi. W. of jct with U.S. Hwy #99, 4.5 mi. sw. of Junction City, in ditches beside road. | 1940 |
17090003
| Upper Willamette | established |
1335166
| OR | Linn | Just south of Corvallis. | 1940 |
17090003
| Upper Willamette | established |