Illinois Waterway, Navigable waterway system between Chicago and Grafton, United States
The Illinois Waterway is a canal system connecting Chicago to Grafton, moving vessels between Lake Michigan and the Mississippi River. It consists of river segments and artificial channels that form a continuous shipping route across the state.
The canal began in 1848 with the Illinois and Michigan Canal, which first connected the lake to the river system. It was later replaced by the Chicago Sanitary and Ship Canal, completed in 1900, which reshaped how water moved through the region.
The waterway links communities from Chicago southward, playing an important role in how people move goods and spend their leisure time. Towns along the route have grown around this transportation corridor, which remains central to their identity.
The waterway maintains a depth of about 9 feet and operates eight locks to handle boat traffic safely. Water levels and conditions vary by season, so checking current information before planning a boat trip is helpful.
The system operates under an international agreement controlling water flow between the lake and river to protect water levels for both Canada and the United States. This makes it one of the few shipping routes in North America governed by cross-border water management rules.
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