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the link should take you to online topos - you can either zoom in, or use the search box - Kawnipi Lake works well for Quetico since it is a unique name - something like "trout lake" would probably get a lot of resultes and you'd have to be able to pick the one you want

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myCCR.com = Canadian Canoe Routes - lots of info - look at the Board Index for the province you want, and you can find trip reports that may help - assuming someone has been thre done that and wrote it up

I think you can layer toporama to show crown land, though I've never tried  - that crown land atlas that ST linked to is likely your best bet.

not quite what you were asking for, but they are useful tools, so I posted them