RedactedNarrative: operator WAS OPERATING A RO DRIFT BOAT ON THE SOUTH FORK OF THE SNAKE RIVER NEAR CONANT BOAT LAUNCH AND HIT A LOG JAM. THIS CAUSED THE BOAT TO CAPSIZE. THREE OF THE FOUR OCCCUPANTS MADE IT TO SHORE. Operator WAS FOUND 15 DAYS LATER 32 MILES DOWN STREAM. 
  
   Hazardous waters, alcohol, and improper lookout were causes.