The Dangerous Drop

Yosseph tried his best to regain his strength to climb up the raft or any tree or branch where he could gather his breath as he was approaching a waterfall. Unfortunately, the water flow was so high that nothing could help Ghinsberg save the fall.  He was running into rocks and trees but all he did was keep his head above the water. Was he able to make up or took his last breath in the waterfall only?