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USGS NAS| HUC Code | Watershed Name | Occurrence | Source |
| 17080001 | Lower Columbia-Sandy | Current | NatureServe |
| 17080002 | Lewis | Current | NatureServe |
| 17080003 | Lower Columbia-Clatskanie | Current | NatureServe |
| 17080005 | Lower Cowlitz | Current | NatureServe |
| 17080006 | Lower Columbia | Current | NatureServe |
| 17100102 | Queets-Quinault | Current | NatureServe |
| 17100103 | Upper Chehalis | Current | NatureServe |
| 17100106 | Willpa Bay | Current | NatureServe |
| 17100207 | Siltcoos | Current | NatureServe |
| 17100303 | Umpqua | Current | NatureServe |
| 17100304 | Coos | Current | NatureServe |
| 17100305 | Coquille | Current | NatureServe |
| 17110009 | Skykomish | Current | NatureServe |
| 17110011 | Snohomish | Current | NatureServe |
| 17110012 | Lake Washington | Current | NatureServe |
| 17110013 | Duwamish | Current | NatureServe |
| 17110019 | Puget Sound | Current | NatureServe |
| 18010101 | Smith | Current | NatureServe |
| 18010102 | Mad-Redwood | Current | NatureServe |
| 18010209 | Lower Klamath | Current | NatureServe |