RedactedNarrative: On 07/24/2017 at approximately 2:15pm Operator was operating their 1995 Stingray, boat towing tubers, on Mill Creek north of the dam.  Operator stated her husband and their daughter were on a round tube drifting behind the watercraft.  The tube was attached to the watercraft using a nylon line.
  
  Operator said she started accelerating forward from neutral when her son Occupant1 observed part of the tow line securing to the tube to the watercraft was in the boat.  Occupant1 picked up the line with his right hand and it became entangled in the line as the boat accelerated.  Before Operator could stop, Occupant1''s thumb was injured and bleeding.  
  
  Occupant1 was transported to the Mill Creek Ramp and met with the Marshall Ambulance Service.  Occupant1 was transported to Regional Hospital in Terre Haute and admitted.  Surgery was required.