According to multiple statements, V1 had been experiencing mechanical issues while pulling two occupants on a tube.  The operator stated there was a loose wire on the battery terminal and once he tightened it he started V1 and let the motor idle for a few minutes.  While looking back at the kids on the tube, he put V1 in forward gear and accelerated.  Almost immediately he felt a jolt and then heard the kids scream.  He turned V1 around and found the victim in the water surrounded by blood.  A witness nearby on a PWC dove off the PWC, swam to the victim and held her above water until V1 circled back around.  Occupants were able to pull the victim into V1 and apply makeshift tourniquets to the wounds.  The immediately called 911 and headed for the closest landing (Cherokee Park). 

The operator stated he was unaware that the victim had left the vessel and the other occupants when interviewed confirmed that the victim had entered the water at the front of the pontoon without letting anyone know. 

Blood drawn from operator and sent to the AR Crime Lab for Toxicology screening.  However, alcohol is not suspected at this time to be a factor in the accident.
 
UPDATE: 10/17/13 - TOXICOLOGY REPORT RECEIVED FROM THE CRIME LAB - NO TRACE OF ALCOHOL OR DRUGS IN OPERATOR.
HEBER SPRINGS