The body of John Angus Mowat, who was last seen on July 13, 1984, was discovered at the bottom of the lake on June 30.
Thirty-three-year-old Mowat of Burns Lake was fishing when he disappeared.
His boat was later found with his fishing rod and a freshly caught fish, but Mowat was nowhere to be seen.
At the end of June this year, another person went missing on the lake and family members hired a private search company to try to recover their relative's body.
Those search efforts led to the discovery of Mowat's body under about 175 metres of water, but the location of the other body is now another mystery.
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