The most scenic way to get to Mack's Canyon on the Deschutes River:
From Portland, Oregon: Proceed east on highway 26 though the towns of Sandy, Welches (The Fly Fishing Shop) and Government Camp. Do not turn on highway 35 (three miles) past Government Camp! Instead, stay on Highway 26 for another 20 miles and turn left on Highway 216 and follow it to Maupin.
At Maupin, cross the Deschutes and immediately turn left onto the Deschutes River access road. Just past the Imperial Hotel and Maupin City Park turn left again. This turn will keep you on the Deschutes Access Road. Proceed about nine miles to Grass Valley road (which is Hwy 216 again). This is just past Sherars Falls. Turn right onto Hwy 216 and go about 3/8 miles. Turn left onto Deschutes Access road and proceed for seventeen miles. This road is very rough and has sharp rocks. Drive 20 miles an hour and enjoy the scenery and avoid flat tires (allow yourself 1-hour + 15-minutes). Mack's Canyon is at the end of the road. The Boat ramp where we will meet is at the far end of the campground (as far as you can drive). My boat will be anchored slightly upstream from the ramp, which may be screened from view by a grove of alder trees.
Drive east from Portland on Interstate 84. At the east end of the city of The Dalles turn right on Hwy 197 and follow it to Maupin.