On Wednesday morning, officials said the missing swimmer was a 19-year-old man from Surrey.
Police said the teen “was in the lake with a group of friends who called police when they noticed he was no longer in sight.”
Crews have been at the lake since the call came in around 4:30 pm yesterday.
There is no indication of foul play, police added.
Buntzen Lake is currently closed to the public for the time being, as police try to locate the missing man.
Further updates are expected later today.