For the hoppers, we throw a Hopper with a Caddis Dropper, and for the smaller flies and emergers we'll use a slightly larger dry as an indicator fly.
If your throwing the JUNK, a 7 ft 3x works great for turning over the big flies.
Water flows higher should remain up for a while. This will keep the water temps low and get a lot of fish and food moving. Salmon should start moving up.