Go to :
https://www.lioapplications.lrc.gov.on.ca/fishonline/Index.html?viewer=FishONLine.FishONLine&locale=en-CA
It's a digital map that allows you to zoom in right down to a 100 ft, so you can see exactly where the border is between the zones.
it also provide details for species present, stocking history and fishing regulations for each individual body of water.