Great Lakes Megalopolis the Chicago-Rochester corridor, starting at the Detroit River but continuing east beyond Lake Ontario along the St. Lawrence Seaway to Quebec City and the Gulf of St. Lawrence. Several corridors have interstate highways but no comprehensive passenger rail service. These highway routes pass through both core and fringe areas of the Great Lakes megalopolis. The upper Great lakes region has a marine corridor that connects Lakes Superior, Huron, and Michigan. However, this route does not include parallel Amtrak passenger rail or interstate highway service. I-70 follows the southern fringe of the megaregion. It runs from Kansas City MO to just
Summit Lakes (Ontario) creek inflow at the northeast tip. The primary outflow is an unnamed creek, from the south end of the south lake, to Upper Twin Lake, which eventually flows via Rabbit Creek, Rabbit Lake, the Matabitchuan River, Lake Timiskaming, and the Ottawa River into the St. Lawrence River. Summit Lakes (Ontario) The Summit Lakes are a pair of lakes connected by a short creek in Nipissing District, Ontario, Canada, about southeast of the community of Temagami. The Ontario Northland Railway mainline crosses the southern tip of the south lake on a trestle. The north lake is about long and wide, and