Sparky - There's no canyon between Drano Lake and the Little White Salmon National Fish Hatchery. It's a very gentle slope from the fish barrier/ladder to the lake. However, the entire stretch is closed to all fishing. The orange marker bouys at the north end of Drano Lake is the limit. Even the tribes can't fish beyond there. It's all U.S. Fish and Wildlife Service property but they let you walk/drive through the area to see the spawning/holding salmon. The pool just downstream of the barrier falls always has a ton of salmon in it. It's fun to watch anyway.