| Okanogan River At Malott, WA |
| Okanogan River At Oroville, WA |
| Okanogan River Near Tonasket, WA |
| Olsen Creek Near Bellingham, WA |
| Omak Creek Near Omak, WA |
| Outlet Creek Near Metaline Falls, WA |
| Palouse River At Hooper, WA |
| Pend Oreille River At Newport, WA |
| Pend Oreille River Below Box Canyon Near Ione, WA |
| Pilchuck River Near Snohomish, WA |
| Pootatuck River At Berkshire, WA |
| Puyallup River At 5Th St Bridge At Puyallup, WA |
| Puyallup River At Alderton, WA |
| Puyallup River At East Main Bridge At Puyallup, WA |
| Puyallup River At Puyallup, WA |
| Puyallup River Near Electron, WA |
| Puyallup River Near Orting, WA |
| Queets River Near Clearwater, WA |
| Quilceda Creek Tributary Above 27Th Ave Ne Near Marysville, WA |
| Quinault River At Quinault Lake, WA |
| Raging River Near Fall City, WA |
| Rex River Near Cedar Falls, WA |
| Rock Creek At Highway 516 Near Ravensdale, WA |
| Rock Creek Near Maple Valley, WA |
| Salix Creek At South Cascade Gl Near Marblemount, WA |
| Salmon Creek Above Diverson Near Okanogan, WA |
| Samish River Near Burlington, WA |
| Sanpoil River Above Jack Creek At Keller, WA |
| Satsop River Near Satsop, WA |
| Sauk River Above Whitechuck River Near Darrington, WA |
| Sauk River At Darrington, WA |
| Sauk River Near Sauk, WA |
| Silver Beach Creek At Maynard Pl At Bellingham, WA |
| Similkameen River Near Nighthawk, WA |
| Skagit River At Marblemount, WA |
| Skagit River At Newhalem, WA |
| Skagit River Near Concrete, WA |
| Skagit River Near Mount Vernon, WA |
| Skagit River Near Rockport, WA |
| Skagit River Near Sedro Woolley, WA |
| Skokomish River Near Potlatch, WA |
| Skookumchuck River At Centralia, WA |
| Skookumchuck River Below Bldy Run Creek Near Centralia, WA |
| Skookumchuck River Near Bucoda, WA |
| Skookumchuck River Near Vail, WA |
| Skookum Creek Above Diversion Near Wickersham, WA |
| Skykomish River Near Gold Bar, WA |
| Snake River Near Anatone, WA |
| Snohomish River At Snohomish, WA |
| Snohomish River Near Monroe, WA |
