RedactedNarrative: Vessel was in middle of lake with 2 occupants fishing on vessel. Occupant 1 explained that victim (occupant 2) lost her balance and fell into the water. At the same time the boat capsized and occupant 1 fell over as well. Both occupants were unable to flip the boat back over. While treading water attempting to right the boat, occupant states that he noticed victim head tipped back and became unresponsive. A witness who was alerted by the distress on the lake ran his boat over to help and aided them to shore. CPR was performed on deceased till EMS arrived. Victim was pronounced deceased at Hospital.