The Rogue, one of the first streams protected by the Wild and Scenic Rivers Act of 1968, is below the small burg of Merlin. It has a 40-mile stretch of mostly Class III (moderate) rapids, with a Class IV (dicey) drop at Blossom Bar and a Class V (death-defying) rapid near the start of the trip at Rainie Falls. There’s also plenty of calm water and deep pools for swimming.