RedactedNarrative: OPERATOR WAS BOATING IN THE MAIN BODY OF WATER.  SHE STOPPED TO FIX HER HAIR-TIE.  SHE REMOVED THE LANYARD AND PLACED IT OVER THE RIGHT HAND GRIP.  SHE LEFT THE MACHINE RUNNING.  A WAVE CAUSED HER TO LOOSE HER BALANCE.  SHE LOST BALANCE AND BEGAN FALLING OFF THE PWC.  AS SHE WAS FALLING, SHE GRABBED FOR THE STEERING GRIPS.  SHE BELIEVES SHE PULLED ON THE LANYARD.  IT LOOPED OVER THE THROTTLE LEVER AND PULLED TIGHT.  THIS RESULTED IN THE THROTTLE STICKING OPEN.  THE PWC HEADED TOWARD SHORE AT A HIGH RATE OF SPEED AND UN-MANNED.  WITNESSES REPORTED THE PWC STRUCK A TREE AT THE EDGE OF THE WATER.  WITNESS ALSO STATED HE OBSERVED THE LANYARD LOOPED OVER THE THROTTLE LEVER WHEN HE GOT TO THE MACHINE.  WITNESS CONTACTED THE FALL RIVER COUNTY SHERIFF'S OFFICE.  NO INJURIES WERE REPORTED OR OBSERVED.  PARK RANGER ASSISTED WITH THIS INVESTIGATION.
NameOfBodyOfWater: ANGOSTURA RESERVOIR
NearestCityTown: HOT SPRINGS                   