Important British Columbia lakes are:Williston, Nechako, Atlin, Babine, Kootenay.

Williston Lake and Atlin Lake.

Ivan Weber died on June 22, 2000, in Atlin, British Columbia, Canada of helicopter accident.

Mikael Glattes died on June 22, 2000, in Atlin, British Columbia, Canada of helicopter accident.

Any point on British Columbia's northern border would qualify as the most northern place in the Province. The northern border of B.C. is the 60th parallel of latitude.

I had to measure this with my trusty elastic band, but the most northerly community in B.C. appears to be Atlin. Atlin is accessible by a gravel road from Tagish, Yukon.