Both views are taken from the river right trail. The log in the foreground will probably float downstream when the water gets higher. The one that is buried in the main flow will probably be there until the water drops and someone removes it.
The arrows indicate the ends of the submerged log. Draw a line between the points of the arrows, and you will get an idea of how far across this log reaches.
(All content of this blog is only intended to add to the discourse, and should not be used as a guide. Make your own decisions based on careful study of the environment when you are there, in person. Be responsible for your own safety. Don't let an internet post make your decisions for you)
The flume (below) looks pretty good at 4'. This photo is taken from river right rocks.