RedactedNarrative: Operator 1 of kayak launched with two other kayakers.  The two kayakers paddled upstream while operator 1 remained near the bridge paddling and fishing. Two hours later the two kayakers decided to head home. They looked for operator 1 whom they could not locate and reported him missing. Operator 1's vessel was located overturned and filled with water 70 miles downstream. Operator 1 was located approximately 198 yards from his vessel not wearing a PFD. The operator was pronounced dead at the scene. Cause of death asphyxia by submersion.