Grand River.

The Grand River runs roughly 300 kilometres south from the highlands near Dundalk to Lake Erie at Port Maitland — designated a Canadian Heritage River in 1994 and the longest river entirely within southern Ontario. The Grand River Conservation Authority manages 11 conservation areas across a 6,800 square kilometre watershed: Belwood Lake, Brant, Byng Island, Conestogo Lake, Elora Gorge, Elora Quarry, Guelph Lake, Luther Marsh, Pinehurst Lake, Rockwood, and Apps' Mill.

A continuous network of rail trails connects the corridor — the Cambridge to Paris Rail Trail, the 47-kilometre Elora Cataract Trailway, the SC Johnson Trail, and the Grand Valley Trail running roughly 280 kilometres along the river. Whether you're walking limestone gorge trails at Elora and Rockwood, paddling the Class I flatwater between Cambridge and Brantford, or casting for brown trout in the Shand Dam tailwater near Fergus, this is some of the most accessible river-corridor terrain in the province.

Most of it is within an hour of the GTA, Hamilton, and Guelph. The lower Grand sits within the Haldimand Tract granted to the Six Nations of the Grand River.