iDigBio.org
GBIF.org
iNaturalist.org
NANFA
FishNet 2
USGS NAS| HUC Code | Watershed Name | Occurrence | Source |
| 17100101 | Hoh-Quillayute | Current | NatureServe |
| 17100102 | Queets-Quinault | Current | NatureServe |
| 17100103 | Upper Chehalis | Current | NatureServe |
| 17100104 | Lower Chehalis | Current | NatureServe |
| 17100105 | Grays Harbor | Current | NatureServe |
| 17100106 | Willpa Bay | Current | NatureServe |
| 17110001 | Fraser | Current | NatureServe |
| 17110002 | Straight of Georgia | Current | NatureServe |
| 17110004 | Nooksack | Current | NatureServe |
| 17110006 | Sauk | Current | NatureServe |
| 17110007 | Lower Skagit | Current | NatureServe |
| 17110008 | Stillaguamish | Current | NatureServe |
| 17110009 | Skykomish | Current | NatureServe |
| 17110010 | Snoqualmie | Current | NatureServe |
| 17110011 | Snohomish | Current | NatureServe |
| 17110012 | Lake Washington | Current | NatureServe |
| 17110013 | Duwamish | Current | NatureServe |
| 17110014 | Puyallup | Current | NatureServe |
| 17110015 | Nisqually | Current | NatureServe |
| 17110019 | Puget Sound | Current | NatureServe |