RedactedNarrative: On 08/16/15 at 4:04 P.M., I was notified by Illinois State Police District 5 that a single vessel, personal injury boat accident occurred at the Wilmington Recreation Club ski lake.  The accident occurred at 3:50 P.M. and I arrived on scene at 4:31P.M. to investigate and determined this was a single vessel, personal injury boat accident involving a knee-boarder who was being towed by boat(IL8460KS).  Victim was transported to St. Joseph Medical Center in Joilet by Wilmington E.M.S.
   
  I identified myself and asked Operator to describe how the accident happened(see attached Operator statement).  Operator advised he was operating his Mastercraft boat and was pulling Victim on a knee board heading west on the north side of the lake.  Operator advised when he turned to the south and  began traveling east, Victim went over the wake towards a dock and did not let go of the rope.  Operator advised Victim struck dock #439 with his jaw.  I inspected dock #439 and observed no damage.  I asked Operator how far away from the docks was he operating at the time of the accident.  He advised he was unsure of the exact distance but estimated his boat was 20-30 yards out from the docks and advised he had pulled/towed six other people previously that day consistent with the manner he towed Victim. I performed a boat safety inspection on Operator''s boat(IL8460KS) and detected no violations.  I asked Operator if he had consumed any alcohol/drugs before the accident.  Operator advised he had one beer much earlier in the day.  I did not observe any impairments or smell any alcohol from his breath.   I observed no equipment/machinery failures with boat(IL8460KS) and the Neu Tron knee board Victim used during the accident.  
   
  I arrived at St. Joseph''s Medical Center in Joliet at 5:36 P.M. and spoke briefly to Victim since he was being treated for a concussion.  I asked him to explain how the accident happened.  Victim advised he did not remember anything about the accident.  I advised Victim I would speak to him at a later date when he recovered.  Victim was transfered to Christ Memorial Hospital in Oak Lawn on 08/17/15 for further observation and released on 08/18/15.  I mailed the B.A.R. to Operator on 08/20/15 and explained to him the directions on how to complete it.
  On 08/22/15 I spoke to Victim again and asked if he had any recollection of the accident. 
   
   Victim advised he did not remember a thing about it.  Victim advised he did remember knee-boarding that day and that he did not consume any alcohol.  I advised Victim that he was very fortunate he sustained no permanent injuries.  End of report.  Case closed.
   