RedactedNarrative: V1 was towing 2 inner tubes behind the rented kayak.  V1 went down a channel in the river where the current pushed them towards a deadfall (tree snag) and the tow rope got caught on the downed tree.  The victim exited the kayak to free the rope & either slipped or was pushed down by the current & struck his head on a rock or submerged tree branch. The victim was unconscious when pulled from the water onto a sandbar.  AirCare was called & the subject was transported to the Hospital The victim was not wearing a life jacket & was intoxicated on alcohol & drugs.