Well, that didn’t work. I go the same link as previously. For some reason the hydrology link did not copy. Is it because there was (PDF) before the title? At any rate I found it by Googling “Mistasin Lake, Canada”, the article was about 10 down, and including about four different crater drainages.
Ancient impact may have created deep niche for life, Jeff Hecht and Maggie McKee, NewScientist, 26 June 2008