There are a lot of exceptions though... ie in many places there are still shoreline road allowances of 66ft, plus the public lands act has specific exemptions for portaging on previously established portages...
That being said, it's quite a complicated issue. If it's of interest one should take some time to do their own research.
Jeff
--
Algonquin Backcountry Recreationalists - Caring for Algonquin's Backcountry - abrweb.ca
My Algonquin Park Map - Accurate, Detailed, Free