I live in Mississauga Ontario. There is a man made lake used to hold the sewage run off before it goes into the Credit river. They hold the water in until it is clean enough for the river.
The Credit river holds all season self sustaining trout (can't recall what type). The fish in the lake is meant as a signal of water quality.
The lake is called Aquitaine. The fishing is really not hard core, best for kids. Good thing is most of the fish I've caught are juveniles so they are easy to get them use to the aquarium.