The Welland Canal is a constructed navigable waterway that links Lake Ontario to Lake Erie, bypassing Niagara Falls. Four distinct canals have been built over the last two centuries, and all four will be commemorated as a CSCE National Historic Site at the 2024 Annual Conference. The first Welland Canal, opened in 1829 and expanded in 1833, was owned and operated by the Welland Canal Company. The canal, 43.4 kms long and 2.4 m deep, featured 40 wooden locks, and cost $8 million. Construction of the Second Welland Canal was initiated in 1842. The canal, purchased by the United Province of Canada in 1849, was opened in 1850. As ship dimensions and tonnages continued to grow, the Third and Fourth Welland Canals were constructed. The Fourth Welland Canal, which became operational in 1932, features 8 locks and was dredged to achieve the minimum design draught of 7.6 m by 1935. The continued operation of the Welland Canal today is a testament to its resilience and a supreme example of Canadian civil engineering achievement.