Great Lakes of the lakes: Ontario does not border Lake Michigan, and Michigan does not border Lake Ontario. New York and Wisconsin's jurisdictions extend into two lakes, and each of the remaining states into one of the lakes. As the surfaces of Lakes Superior, Huron, Michigan, and Erie are all approximately the same elevation above sea level, while Lake Ontario is significantly lower, and because the Niagara Escarpment precludes all natural navigation, the four upper lakes are commonly called the "upper great lakes". This designation, however, is not universal. Those living on the shore of Lake Superior often refer to all the
Great Lakes Greyhound Lines Milwaukee (in Wisconsin), and Chicago (in Illinois), as far to the south as Chicago (in Illinois), Dubuque (in Iowa), and Omaha (in Nebraska), and as far to the west as Sweetgrass, Great Falls, Helena, and Butte, Montana; it had met (to the west) the Northwestern GL, (to the north) the Western Canadian GL and the Eastern Canadian GL, (to the east and south) the Great Lakes GL and the (second) Eastern GL (formerly the second Central GL and the Pennsylvania GL), and (to the south) the Overland GL. Thus ended the Great Lakes GL and the Northland GL, and thus