From the confluence with Chimney Creek down to the Forest Service boundary.
From Meeteetse, take state highway 290 about 7 miles west of town. Take the Wood River Road to the southwest at this point where the highway splits. Stay on this road another 18 miles or so until reaching the U.S. Forest Service Wood River campground. The South Fork joins with the Wood River about 1 mile back downstream from the campground and extends upstream about 3.9 miles to the mouth of Chimney Creek.