HUC Code | Watershed Name | Occurrence | Source |
17080001 | Lower Columbia-Sandy | Historic | NatureServe |
17090001 | Middle Fork Willamette | Current | NatureServe |
17090002 | Coast Fork Willamette | Current | NatureServe |
17090003 | Upper Willamette | Current | NatureServe |
17090004 | Mckenzie | Current | NatureServe |
17090005 | North Santiam | Current | NatureServe |
17090006 | South Santiam | Current | NatureServe |
17090007 | Middle Willamette | Current | NatureServe |
17090008 | Yamhill | Historic | NatureServe |
17090009 | Molalla-Pudding | Current | NatureServe |
17090011 | Clackamas | Current | NatureServe |
17090012 | Lower Willamette | Historic | NatureServe |