The Humber Watershed is in the Greater Toronto Area , bounded by the Oak Ridges Moraine to the north, the Credit Watershed (Mississauga) to the west, the Don Watershed (Toronto) to the east and Lake Ontario to the south. Centres within the Humber Watershed includes much of the City of Vaughan (upper reaches) and of Etobicoke.

Map of Study Area (courtesy Humber Watershed Task Force)

Some thematic maps of the study region (courtesy of MTRCA):

Road Network

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