I was there on the upper river for the first time recently. The river below the bridge hole has more new wood debris, meaning very large trees with rootwad attached, than any river I have ever fished. One guide I fished with who has fished there for 15 years said there is no named hole below bridge that is the same and many are gone. That is not to say there is not good water, because there is plenty, but it is a river that is very unstable and is going to change a lot in high water events. There where still trees floating down the river and lodging in log jams when we where there two weeks ago.
We had days of really good fishing when the water was not rising. A midweek rainstorm reduced visibility and the river rose for one day, thus the floating trees. We where about 50/50 steelhead to salmon.
Just being on the Dean is an incredible experience. No picture can capture the magnitude of the landscape. You have to go to see it yourself.