Operator was drifting down stream and had just started his motor.  He was floating side ways starboard side downstream.  Boat lodged up against log jam, port side dipped down and boat filled with water.  Boat became lodged under water against jam.  Both the operator and occupant were able to get out of water and onto gravel bar.  Neither were wearing PFD, claimed they had them on board.  Both were rescued off gravel bar, and taken down stream to Menan boat dock.  The passenger was treated the the scene by medical for mild hypothermia.
Menan                         