Originally Posted by velowallah

I did more research on the Cataraqui and found this discussion, which seems to confirm my impression that it's not terribly geared towards touring cyclists, more for mountain bikers and ATVers looking for lots of mud and flies...

It's certainly harder to find reliable detailed info about bike touring than it is in Quebec. It seems like Prince Edward county is a good place to bike though, so that might be a good detour on the way to TO via the elusive Waterfront trail.