Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
243024
| OR | Clatsop | Columbia River, Blind Slough, Cathlamet Bay. | 2002 |
17080006
| Lower Columbia | established |
260299
| OR | Clatsop | Columbia River, Cathlamet Bay, near Lois Island | 2005 |
17080006
| Lower Columbia | established |
260298
| OR | Clatsop | Columbia River, just west of Astoria Bridge | 2005 |
17080006
| Lower Columbia | established |
260297
| OR | Clatsop | Columbia River, near Hammond | 2005 |
17080006
| Lower Columbia | established |
243025
| OR | Clatsop | Columbia River, near Russian Island, Green Marker 15, high pools | 2002 |
17080006
| Lower Columbia | established |
243029
| OR | Clatsop | Columbia River, Sand Island #1, high pool. | 2003 |
17080006
| Lower Columbia | established |
1396034
| OR | Clatsop | Marsh Island Creek | 1999 |
17080006
| Lower Columbia | established |
243027
| OR | Clatsop | Youngs Bay, Wallooskea tideflat. | 2002 |
17080006
| Lower Columbia | established |
243032
| OR | Clatsop | Youngs River, lower estuary. | 2003 |
17080006
| Lower Columbia | established |
243026
| OR | Clatsop | Youngs River, upper dredge channel. | 2002 |
17080006
| Lower Columbia | established |
243031
| OR | Clatsop | Youngs River, upper estuary. | 2003 |
17080006
| Lower Columbia | established |