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 Higher Education Corporation Great Lakes Higher Education Corporation Great Lakes Higher Education Corporation was one of the largest student loan providers and guarantors in the United States. Headquartered in Madison, Wisconsin, the corporation is non-profit. It was one of the four largest companies which service United States federal student loans: "Great Lakes", Nelnet, Navient, and the Pennsylvania Higher Education Assistance Agency. In 2018, the loan servicing part of the organization was sold to Nelnet. The company sometimes gives education-related grants, with a focus on increasing access to higher education. The former loan servicing arm of Great Lakes, the "Great Lakes Educational Loan Services,