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 |
1396070
| OR | Columbia | Clatskanie River | 1999 |
17080003
| Lower Columbia-Clatskanie | established |
260300
| OR | Columbia | Columbia River, Bradbury Slough | 2005 |
17080003
| Lower Columbia-Clatskanie | established |
243039
| OR | Columbia | Trojan Power Plant Pond, Trojan. | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
243038
| OR | Multnomah | Columbia River, Rooster Rock State Park, boat launch. | 2003 |
17080001
| Lower Columbia-Sandy | established |
243037
| OR | Multnomah | Columbia River, Sand Island #2 channel, Rooster Rock State Park. | 2003 |
17080001
| Lower Columbia-Sandy | established |
260301
| WA | Clark | Columbia River, near Fort Vancouver National Historic Site | 2005 |
17080003
| Lower Columbia-Clatskanie | established |
243022
| WA | Cowlitz | Columbia River, Dike Road, North Woodland | 2002 |
17080003
| Lower Columbia-Clatskanie | established |
243036
| WA | Cowlitz | Columbia River, Dike Road, North Woodland | 2003 |
17080003
| Lower Columbia-Clatskanie | established |
243023
| WA | Cowlitz | Columbia River, Sportsmens Club boat launch, Kalama | 2002 |
17080003
| Lower Columbia-Clatskanie | established |
243030
| WA | Wahkiakum | Columbia River, Grays Bay, Grays River mouth. | 2003 |
17080006
| Lower Columbia | established |
243028
| WA | Wahkiakum | Grays River, near Rosburg | 2002 |
17080006
| Lower Columbia | established |