The
Richelieu River takes its source in
Lake Champlain, from which it flows to the north in the
province of Quebec,
Canada and empties into the
St. Lawrence river. It was formerly known as the
Iroquois River and the
Chambly River. This river was a key route of water transport for cross-border trade between Canada and the United States, until the arrival of the railway in the mid-19th century.