The Chambly Canal is a National Historic Site of Canada, running along the Richelieu River past St_Jean_sur_Richelieu and Chambly. Building commenced in 1831 and the canal opened in 1843. It served as a major commercial route during a time of heightened trade between the United States and Canada. Trade dwindled after World War I, and as of the 1970s, traffic has been replaced by recreational vessels.
Canal (waterway), artificial waterway constructed for purposes of irrigation, drainage, or navigation, or in connection with a hydroelectric dam.
Canals date from a period long before the Christian era and served as means of navigation and communication for the Assyrians, Egyptians, Hindus, and Chinese.
The construction of the Erie Canal, started in 1817, marked the beginning of an era of canal building, which produced an aggregate of more than 7242 km (4500 mi) of canals (mostly in the Middle Atlantic and Central states) and was largely responsible for opening the American Midwest to settlement.