RedactedNarrative: Unit 1 and 2 were side by side (NB).  Due to heavy traffic a large wake caused #1 to surge toward #2.  Vessel 2 went over the top of vessel 1.  Driver and passenger of number 1 were thrown into the water causing minor injuries.  Vessel 1 driver had a left knee abrasion and hip pain.  Passenger had a laceration on her head.  Both transported to Mercy Health by Rockford Ambulance.  Vessel 2 driver refused medical and gave no injuries.  No citations, no further.