Great Lakes these waterways is heavy. Pleasure boats can also enter or exit the Great Lakes by way of the Erie Canal and Hudson River in New York. The Erie Canal connects to the Great Lakes at the east end of Lake Erie (at Buffalo, New York) and at the south side of Lake Ontario (at Oswego, New York). In 2009, the lakes contained 84% of the surface freshwater of North America; if the water were evenly distributed over the entire continent's land area, it would reach a depth of 1.5 meters (5 feet). The source of water levels in the lakes
Great Lakes Dredge and Dock Company system had begun. The work performed on the Kinzie Street Bridge conformed to specifications and did pass City inspection upon completion in 1991. In the lawsuits that followed Great Lakes was initially found liable but was later cleared after it was revealed that the city was aware the tunnel was leaking before the flood and the city had also not properly maintained the tunnel. In addition the case went the United States Supreme Court in which ruled that since the work was being done by a vessel in navigable waters of the Chicago River, Admiralty law applied and Great Lakes