I thought I would revive this thread in my efforts to gather more information about this overlooked gem of Quetico. In addition to the information requested earlier, I am searching for lists of Quetico lakes that are known to contain whitefish. Some of you are more gifted with searching out this information than I am. I have done some searching, but have not found any such lists of fish species in Quetico. I am planning a trip to lakes that, I believe, probably have whitefish, but not sure. Anyway, thanks in advance for any guidance that you can provide. As stated in earlier posts, they are outstanding table fare, and would rival waldos and lakers for quality. Thanks!

Last Observation Date = not available.  I can only assume that means the lake has been fished out and the species no longer exists there. 

There used to be a publication the ministry put out entitled "Quetico Fishes" which had lake survey(1967-1973) information in it.  It's likely this survey information is used in the above website.  A quick google search turned up a text version of the publication.
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I'm guessing that any lake that can hold Lake Trout depth wise could support Lake Whitefish?

This article says they run in schools so I guess that would be one-way to look for them if the water is deep enough.

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I agree that they hang with lakers. I tried the links provided and the information is limited, but about what I expected. I’m planning to be in some prime laker waters so I’m going to take some small jigs, spoons, and powerbait to see if they are home.

I’m still interested in seeing any reports, experiences of those that have found them. I think they are the most overlooked sportfish in Q.

Crooked Lake! Interesting! I know it’s deep above Curtain Falls. Where else is it deep enough?