TRCA's jurisdiction is made up of various watersheds that span 2,506 square kilometeres in Toronto and region

basemap.gdbsubwatershed  boundaries in TRCA jurisdiction. These subwatersheds are a compilation of subwatershed boudaries delinated through the use of a DEM...

2019 Fish Community records from sites sampled throughout nine watersheds in Toronto and Region Conservation Authority’s (TRCA) jurisdiction. Data is from TRCA's Regional...

2018 Fish Community records from sites sampled throughout nine watersheds in Toronto and Region Conservation Authority’s (TRCA) jurisdiction. Data is from TRCA's Regional...