Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
165301
| OR | Columbia | Big McNary Lake on Sauvie Island in the Columbia River | 1995 |
17090012
| Lower Willamette | established |
40943
| 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 |
296036
| 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 |
296041
| 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 |
40934
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2001 |
17090012
| Lower Willamette | established |
296046
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2009 |
17090012
| Lower Willamette | established |
296052
| OR | Columbia | Sauvie Island Lakes and sloughs, northwest of Portland and east of highway 30. | 2013 |
17090012
| Lower Willamette | established |
40944
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2001 |
17090012
| Lower Willamette | established |
296054
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2009 |
17090012
| Lower Willamette | established |
296059
| OR | Columbia | Scappoose Bay, south end of the city pf St. Helens, off Multnomah channel. | 2013 |
17090012
| Lower Willamette | established |
41359
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2001 |
17090012
| Lower Willamette | established |
297300
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2009 |
17090012
| Lower Willamette | established |
297306
| OR | Multnomah | Bybee Lake, North Portland Road, Portland. | 2013 |
17090012
| Lower Willamette | established |
41758
| 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 |
297319
| 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 |
297324
| 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 |
41365
| OR | Multnomah | Delta Park Ponds, North Portland in West Delta Park | 2001 |
17090012
| Lower Willamette | established |
297327
| OR | Multnomah | Delta Park Ponds, North Portland in West Delta Park | 2009 |
17090012
| Lower Willamette | established |
297330
| OR | Multnomah | Delta Park Ponds, North Portland in West Delta Park | 2013 |
17090012
| Lower Willamette | established |
41384
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2001 |
17090012
| Lower Willamette | established |
297372
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2009 |
17090012
| Lower Willamette | established |
297377
| OR | Multnomah | Smith Lake, North Portland Road, Portland. | 2013 |
17090012
| Lower Willamette | established |
41768
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2001 |
17090012
| Lower Willamette | established |
297385
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2009 |
17090012
| Lower Willamette | established |
297391
| OR | Multnomah | Willamette River sloughs, from Milwaukie to mouth of Willamette River. | 2013 |
17090012
| Lower Willamette | established |