Ditto.

Nasty campsites are the exception, not the rule in Quetico.  I have @ 30 trips there under my belt & this has always been my experience.

Solotripper's advice re: time of year and going deeper into the park are right on the mark.

On those rare occasions when I have encountered such conditions, I have notified park authorities. They seemed very concerned and promised to address the situation as soon as possible. 

That's my experience, anyway.

Jimbo.  8-)