| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
165304
| OR | Columbia | Big McNary Lake on Sauvie Island in the Columbia River | 1995 |
17090012
| Lower Willamette | established |
|
243172
| OR | Columbia | Multnomah Channel, Sauvie Island-Gilbert River Boat Ramp | 2002 |
17090012
| Lower Willamette | established |
|
40939
| OR | Columbia | Santosh Slough, off Multnomah channel north of Scappoose, approximately 2.7 miles beyond Columbia County airport via Dike Road off hwy 30. | 2001 |
17090012
| Lower Willamette | established |
|
296033
| OR | Columbia | Santosh Slough, off Multnomah channel north of Scappoose, approximately 2.7 miles beyond Columbia County airport via Dike Road off hwy 30. | 2009 |
17090012
| Lower Willamette | established |
|
296038
| OR | Columbia | Santosh Slough, off Multnomah channel north of Scappoose, approximately 2.7 miles beyond Columbia County airport via Dike Road off hwy 30. | 2013 |
17090012
| Lower Willamette | established |
|
40930
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2001 |
17090012
| Lower Willamette | established |
|
296042
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2009 |
17090012
| Lower Willamette | established |
|
296048
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2013 |
17090012
| Lower Willamette | established |
|
40945
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2001 |
17090012
| Lower Willamette | established |
|
296055
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2009 |
17090012
| Lower Willamette | established |
|
296060
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2013 |
17090012
| Lower Willamette | established |
|
41355
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2001 |
17090012
| Lower Willamette | established |
|
297299
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2009 |
17090012
| Lower Willamette | established |
|
297305
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2013 |
17090012
| Lower Willamette | established |
|
41759
| OR | Multnomah | Columbia slough, in north Portland, between Marine Drive on north and highway 30 on south, numerous road crossings. | 2001 |
17090012
| Lower Willamette | established |
|
297318
| OR | Multnomah | Columbia slough, in north Portland, between Marine Drive on north and highway 30 on south, numerous road crossings. | 2009 |
17090012
| Lower Willamette | established |
|
297323
| OR | Multnomah | Columbia slough, in north Portland, between Marine Drive on north and highway 30 on south, numerous road crossings. | 2013 |
17090012
| Lower Willamette | established |
|
41386
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2001 |
17090012
| Lower Willamette | established |
|
297373
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2009 |
17090012
| Lower Willamette | established |
|
297378
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2013 |
17090012
| Lower Willamette | established |
|
41765
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2001 |
17090012
| Lower Willamette | established |
|
297382
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2009 |
17090012
| Lower Willamette | established |
|
297388
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2013 |
17090012
| Lower Willamette | established |