Great Lakes passenger steamers the lakes grew in size and number, and additional decks were built on the superstructure to allow more capacity. This inexpensive method of adding capacity was adapted from river steamboats and successfully applied to lake-going craft. The Erie Canal opened in 1825, allowing settlers from New England and New York to reach Michigan by water through Albany and Buffalo. This route opening and the incorporation of Chicago in 1837, increased Great Lakes steamboat traffic from Detroit through the straits of Mackinaw to Chicago. The screw propeller was introduced to the Great Lakes by "Vandalia" in 1842 and allowed the building
Great Recycling and Northern Development Canal of a Chicago diversion from Lake Michigan would harm downstream Canadian areas in the Great Lakes Basin. The Canadian government further stated that exhaustive studies had indicated no additional sources of freshwater were available in Canada to replace the waters that would be removed from the Great Lakes by the proposed diversion. Kierans disputed the accuracy of the 1959 Canadian government's position and asserted that the GRAND Canal could provide additional fresh water to the Great Lakes. Waters from the Ogoki River and Longlac are now being diverted into the Great Lakes at a rate equivalent to that taken by