My sister & I are local to the area and hiked out there this morning, we wanted to at least try. The general area he got lost in isn’t all that large, but it is very treacherous and difficult to move through. We were covered head to toe in burrs, there are thick shrubs/vines/trees.
IMO, after the foot searches did not find him, all that’s really left is the river. That must be why the police are focused on that. The river is slow and quiet, in the pitch dark, you could be wandering along and easily fall right in without seeing it beforehand. The water is freezing cold this time of year and there is undercurrent, plus the dark, and if he was intoxicated… I can see how it would happen.
It’s really sad and I hope they find him quickly, because snow and freezing weather will set in any day now.