Another example of the dangers found easy (class II-III) river sections at high water levels:
This crew paddling the Chili bar section on the same river at about 27k. https://youtu.be/2ai7H0DS_sM?t=6m
The person in the film swims for 6mins going about two miles down river. He lost all his gear. (Boat, paddle, gro pro on back of boat)
It if was not for Gavin providing safety kayaking support he likely would have flushed drowned.