RedactedNarrative: On sunday, june 8, 2014, at approximately 1400, operator was traveling downstream on the tippecanoe river.  Operator was operating a 2009, yamaha vx1100 pwc, registration of in 2875 dj.  Operator and his son were up in the river farther than they had ever been before and were unfamiliar with the area.  Son was operating a 2005, yamaha waverunner, registration of in 5819 cb, and was following behind his father.   Operator struck a large rock that was submerged just below the water's surface.  The impact threw operator from the pwc.  Operator struck the handlebars as he was thrown over the front of the pwc.  Operator stood up immediately after the accident and appeared to be fine.  Son helped his father up onto the pwc that he was operating.  Shortly after getting onto son's pwc, operator passed out and fell from the pwc back into the water.  Son pulled his father to the nearest shore and was able to get a local resident to call 911.  
  	 buffalo first response and the monticello fire department ambulance responded to the scene.  They transported operator to iu white memorial hospital where he was immediately flown to st. Vincent's hospital in indianapolis for possible internal injuries. 
  	 the pwc that operator was operating sustained damage to the hull of the vessel.  When i arrived at the scene, the pwc was filling with water due to the hull damage.  Both operator and son were wearing us coast guard approve pfds at the time of the accident.   
  	 Operator’s wife advised that operator did undergo surgery for internal injuries and is expected to make a full recovery.