| Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
|
165305
| OR | Columbia | Big McNary Lake on Sauvie Island in the Columbia River | 1995 |
17090012
| Lower Willamette | established |
|
40940
| 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 |
|
274044
| 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 |
|
296032
| 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 |
|
296037
| 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 |
|
40931
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2001 |
17090012
| Lower Willamette | established |
|
296043
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2009 |
17090012
| Lower Willamette | established |
|
274045
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2009 |
17090012
| Lower Willamette | established |
|
296049
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2013 |
17090012
| Lower Willamette | established |
|
274046
| OR | Columbia | Scappoose Bay | 2009 |
17090012
| Lower Willamette | established |
|
40946
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2001 |
17090012
| Lower Willamette | established |
|
296056
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2009 |
17090012
| Lower Willamette | established |
|
296061
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2013 |
17090012
| Lower Willamette | established |
|
41356
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2001 |
17090012
| Lower Willamette | established |
|
297303
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2009 |
17090012
| Lower Willamette | established |
|
297309
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2013 |
17090012
| Lower Willamette | established |
|
41760
| 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 |
|
297317
| 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 |
|
297322
| 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 |
|
41387
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2001 |
17090012
| Lower Willamette | established |
|
297374
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2009 |
17090012
| Lower Willamette | established |
|
297379
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2013 |
17090012
| Lower Willamette | established |
|
41766
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2001 |
17090012
| Lower Willamette | established |
|
297386
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2009 |
17090012
| Lower Willamette | established |
|
297392
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2013 |
17090012
| Lower Willamette | established |