Take Hwy. 89 north out of Sedona toward Flagstaff through Oak Creek Canyon. About 12 miles (two miles past Slide Rock State Park) there is a parking area to the left of the highway. It is not well marked.
Autumn in Oak Creek Canyon is spectacular. The river flows year around and with the maples, sycamores, walnuts, sumacs, and other deciduous trees in full fall plumage, the opportunities for magnificent reds, yellows, and greens are in abundance. This was shot at a still spot in the West Fork. I used spot metering with a K3350 white balance at f/4.9.