The Upper Clackamas River from Three Lynx to North Fork is a great 13 mile winter/spring run close to Portland, OR. You'll experience continuous class II/III whitewater with some class IV excitement thrown in. This is among the most popular rafting trips in northern Oregon due to it's proximity to Portland, great whitewater, camping opportunities, and classic Pacific Northwest scenery. Oregon 224 follows the river which makes it easy to scout rapids and do a shorter run.
River Drifters (800) 972-0430 offers half day, full day, and multi-day rafting trips throughout Oregon and Washington.
Definitely be careful at Hole in the Wall Rapid (IV) where a river left eddy/whirlpool has trapped many a boater. It is extremely difficult, if not impossible, to exit this without scrambling over wet rocks and using ropes to line the boat to safety.
There are tons of places you can choose to put-in or take-out. There is river access at Three Lynx, Fish Creek, Carter Falls, Big Eddy, below Toilet Bowl, Memaloose, and more. After Toilet Bow (III+), the river is mostly Class II down to North Fork Reservoir.
Each May, the Clackamas River is the home of the Upper Clackamas River Festival. This is a weekend full of raft and kayak races, gear workshops, fantastic vendors, and spending time with awesome boaters.
Mile 0: River access is on the left bank at Highway 224 Bridge or Sandstone Bridge. Just downstream is Powerhouse Rapid (III+) and the Three Lynx Power Station.
Mile 2.1: The Narrows is a beautiful narrow gorge.
Mile 4.2: Soon after Roaring River Rapid (III) the Roaring River flows into the Clackamas River from river right. About a mile downstream of the rapid there's a sharp left bend which is the marker for Hole in the Wall (IV).
Mile 5.3: Hole in the Wall Rapid (IV) is typically scouted since it has a dangerous eddy/whirlpool on river left.
Mile 6.9: Fish Creek River Access is a great place to begin or end your journey.
Mile 7.7: Carter Falls (IV-) is a famous rapid just above Carter Bridge. There is a hole in the center which many people miss by taking the left hand line. The hole is the location of the infamous Gate #3 in the annual Upper Clackamas Whitewater Festival.
Mile 9.1: Big Eddy river access is a common take out with a long carry.
Mile 9.5: Toilet Bowl (III+) is a series of powerful waves that regularly flip rafts and catarafts.
Mile 10: Bob's Hole (III) is a great kayak playspot at certain flows.
Mile 13.3: Memaloose take-out is the most commonly used take-out. You may continue floating down to North Fork Reservoir.