 The other triple divide is at Hill of Three Waters near Hibbing, Minnesota, which is the junction with the St. Lawrence divide.This not a summit, but a highland plains where the watersheds of the Mississippi, Nelson and St. Lawrence River (which flows to the Gulf of St. Lawrence) meet.The eastern portion of the divide marked the original northern boundary of both Ontario and Quebec provinces at the time of Confederation in 1867, although both have since expanded significantly northward.