Headwaters – York Durham Headwaters, Just a short drive North of the GTA, The Headwaters region has trails to hike, places to fish, lakes to splash in, horses to ride, and vistas that will take your breath away no matter the time of year. The regions’ four major rivers (The Grand, Nottawasaga, Humber, and Credit) start here and flow into the Great Lakes. Defined by the landscape and distinguished by the spirit of the people who call this place home, Headwaters welcomes you to escape the bustle of the city and get in touch with natu.