RedactedNarrative: Operator and his father (passenger) were hunting on the lake and were returning to the public access. When they were approximately 75-100 yards from the access, the jon boat began taking on water and then capsized, throwing both occupants into the water. 
  
  The operator was able to climb onto the overturned boat. The passenger was struggling to return to the boat and was drifting further away. It appeared that he was removing his life jacket to try to get his chest waders off, however he continued struggling at the surface and his torso/head then went under water, with the air in his waders floating his legs/feet. The operator called 911 from the overturned boat. Responders arrived and took a boat out to the passenger and then picked up the operator from the overturned boat. They were brought to shore and life saving efforts were performed on the passenger. He was later pronounced deceased at the hospital. The operator was taken to the hospital and evaluated for hypothermia. Life jackets were being worn by both in the boat (and by the operator after capsizing). Alcohol was not a factor.