Chicago Harbor is made up of the public rivers, canals, and lakes within the territorial limits of Chicago. It connects all slips, basins, piers, breakwaters, and structures with a distance of three miles from the shore between the extended north and south lines of the city.

The greater Chicago Harbor includes portions of the Chicago River, the Calumet River, the Ogden Canal, the Chicago Sanitary and Ship Canal, Lake Calumet, and Lake Michigan.^[1]

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