| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
40854
| OR | Clatsop | Blind Slough, north of Knappa junction or Brownsmead junction off hwy 30. | 2001 |
17080006
| Lower Columbia | established |
|
295771
| OR | Clatsop | Blind Slough, north of Knappa junction or Brownsmead junction off hwy 30. | 2009 |
17080006
| Lower Columbia | established |
|
295371
| OR | Clatsop | Blind Slough, north of Knappa junction or Brownsmead junction off hwy 30. | 2009 |
17080006
| Lower Columbia | established |
|
295776
| OR | Clatsop | Blind Slough, north of Knappa junction or Brownsmead junction off hwy 30. | 2013 |
17080006
| Lower Columbia | established |