| West Fork Ashland Creek Near Ashland, OR |
| West Fork Cow Creek Near Glendale, OR |
| Wiley Creek Near Foster, OR |
| Willamette River Above Falls, At Oregon City, OR |
| Willamette River At Albany, OR |
| Willamette River At Corvallis, OR |
| Willamette River At Harrisburg, OR |
| Willamette River At Newberg, OR |
| Willamette River At Portland, OR |
| Willamette River At Salem, OR |
| Willamette River Below Falls, At Oregon City, OR |
| Williamson River Below Sprague River Near Chiloquin, OR |
| Williamson River Near Klamath Agency, OR |
| Willow Creek Above Willow Creek Lake, Near Heppner, OR |
| Willow Creek At Heppner, OR |
| Willow Creek At Morgan Street, At Heppner, OR |
| Wilson River At Sollie Smith Bridge At Tillamook, OR |
| Wilson River Near Tillamook, OR |
| Winberry Creek Near Lowell, OR |
| Wood River Near Klamath Agency, OR |
| Zollner Creek Near Mt Angel, OR |
