By Mary Fairchild Menominee River, Piers Gorge, Spring of 2010; CFS 3000. The Fox River Valley in Yorkville, Illinois, is expected to attract paddlers from throughout the Midwest as well as become an area for paddling instructors as a year-round teaching environment at the first whitewater park in the area. Ryan Rushton, L4 longboat training on the Menominee…