River Kettle River Class III-IV at Banning State Park Lester River Saint Louis River St. Croix River (Wisconsin–Minnesota) at Interstate State Park Temperance River Montana Clarks Fork Yellowstone River Gallatin River Madison River Stillwater River Boulder River Yellowstone River Middle Fork of the Flathead Big Timber Creek Sun River Oregon River flow information is available from the USGS and Pat Welch River gauges River forecast data available through National Weather Service Popular whitewater rivers in Oregon: Alsea River, Upper North Fork (Class 3 (5)) Blue River (Oregon), (Class 4 (5)) Breitenbush River (Class 4) Bull Run River - Site of slalom course Calapooia River, the upper upper section (Class 3 (4)) Clackamas River - Year-round water, proximity to Portland, and a range of runs make this a popular river. Barton to Carver (Class 2) Carver to Clackamette (Class 2) Bob's to Memaloose (Class 2) Fish Creek to Bob's (Class 3–4) - runnable year round (in kayaks, canoes, and rafts) Three Lynx to Fish Creek (Class 3–4) - runnable winter through late Spring most years. Killer Fang (Class 4) June Creek (Class 4) Collawash River Middle (Class 3+ to 4) Upper section (Class 4+ to 5-) Coquille River Black Rock Fork of the South Fork (Class 4 (5)) Brewster Canyon, East Fork Coquille (Class 5) Lower (Class 3–4) South Fork (Coal Creek Canyon) (Class 4 (5)) Upper South Fork (The Gem) (Class 5) Upper Upper South Fork (Cataract Canyon) (Class 5+ to 6) Crooked River (Class 4) Deschutes River Canyon Run (class 4 (5)) Lower Deschutes (Class 3) Riverhouse Run (Class 4) Dillon Falls to Meadow Camp (Class 4 (5)) Upper Upper - Benham Falls (Class 5) Grande Ronde River Hood River Upper Middle Fork (Class 4-4+) Upper East Fork (Class 4+) Illinois River (Class 4+ - 5) John Day River Little River upper section (Class 4 (5)) McKenzie River headwaters (Class 4–5) Middle Santiam River concussion run (Class 4) Molalla River Table Rock Fork (Class 3 (4)) Three Bears (Class 3 (4)) North Fork (Class 4+) Table Rock Fork Gorge (Class 4 - 5) Nehalem River North Fork Middle Fork Willamette River Miracle Mile (Class 5) Headwaters (Class 5) Lower Gorge (Class 4) North Santiam River Niagara section (Class 3, 4, 5) Little North Santiam River Opal Creek headwaters (Class 4 - 5) Upper Opal Creek (Class 4+) Lower Opal Creek (Class 4 (5)) Opal Gorge (Class 4 - 5)