RedactedNarrative: Boat 1 was drifting down the Snake River from east to west.  Boat 1 struck a rock in the riffle.  Boat came up on its starboard side and ejected the driver and one passenger.  The boat was pushed into full throttle and came across the river and up onto land.  Both the driver and the passenger were pulled out of the water and brought to sandbar close to the crashed boat.