iDigBio.org
GBIF.org
iNaturalist.org
NANFA
FishNet 2
USGS NAS| HUC Code | Watershed Name | Occurrence | Source |
| 17100205 | Alsea | Current | NatureServe |
| 17100206 | Siuslaw | Current | NatureServe |
| 17100207 | Siltcoos | Current | NatureServe |
| 17110004 | Nooksack | Current | NatureServe |
| 17110005 | Upper Skagit | 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 |
| 17110014 | Puyallup | Current | NatureServe |
| 17110015 | Nisqually | Current | NatureServe |
| 18010101 | Smith | Historic | NatureServe |
| 18010102 | Mad-Redwood | Historic | NatureServe |
| 18010105 | Lower Eel | Historic | NatureServe |
| 18010106 | South Fork Eel | Historic | NatureServe |
| 18010107 | Mattole | Historic | NatureServe |
| 18010108 | Big-Navarro-Garcia | Current | NatureServe |
| 18010110 | Russian | Historic | NatureServe |
| 18010209 | Lower Klamath | Historic | NatureServe |
| 18020103 | Sacramento-Lower Thomes | Historic | NatureServe |
| 18020104 | Sacramento-Stone Corral | Historic | NatureServe |
| 18020109 | Lower Sacramento | Historic | NatureServe |
| 18050001 | Suisun Bay | Historic | NatureServe |
| 18050002 | San Pablo Bay | Historic | NatureServe |