Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
295776
| OR | Clatsop | Blind Slough, north of Knappa junction or Brownsmead junction off hwy 30. | 2013 |
17080006
| Lower Columbia | established |
295916
| OR | Columbia | Clatskanie Slough, north of Clatskanie off hwy 30. | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
295940
| OR | Columbia | Deer Island Slough, northwest of Columbia City off hwy 30 at Reichold Chemical (access only at south end). | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
295952
| OR | Columbia | Dibblee's Slough, Dibblee Point northwest of Rainer | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
295968
| OR | Columbia | Goat Island Slough, northwest of Columbia City off highway 30 at Reichold Chemical (access at south end only) | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
295975
| OR | Columbia | Magruder Slough, off Westport Slough, located north of highway 30, 3 miles east of Westport. | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
296001
| OR | Columbia | Prescott Slough, along highway 30 at Prescott Junction, west of Trojan Nuclear Power Plant. | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
296018
| OR | Columbia | Reichold Chemical Discharge Canal. | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
296028
| OR | Columbia | Rinearson Slough, north of hwy 30, northwest of Rainer. | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
296053
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2013 |
17090012
| Lower Willamette | established |
297347
| OR | Multnomah | Government Island Slough, access by boat from Columbia River, north of Portland International Airport | 2013 |
17080003
| Lower Columbia-Clatskanie | established |
299898
| OR | Washington | Henry Hagg Lake, west of highway 47 about 5 miles south of Forest Grove | 2013 |
17090010
| Tualatin | established |