How real was the rafting in Indiana Jones?

In this video, Trevor and Kailee are taking on a classic rafting scene from the movie Indiana Jones and the Temple of Doom. In this scene Indy jumps out of a plane with an emergency life raft and gently glides down to a snowy hill followed by an exciting slide into a deep gorge. Did the scene age well? How was the realism of the on water rafting? Find out as Trevor ruins one of his favorite childhood series.