Here's a start, one of the nicer parks to canoe camp in. Lots of information out there and tons of well written trip reports here and at other sites.
http://www.ontarioparks.com/english/algo-canoeing.html
Here's a great map for the park
http://www.algonquinmap.com/
http://www.ontarioparks.com/english/algo-canoeing.html
Here's a great map for the park
http://www.algonquinmap.com/