Welland Canal Port Maitland. With the opening of the extension, the canal stretched between the two lakes, with 40 wooden locks. The minimum lock size was , with a minimum canal depth of . Deterioration of the wood used in the 40 locks and the increasing size of ships led to demand for the Second Welland Canal, which used cut stone locks, within just a few years. In 1839 the government of Upper Canada approved the purchase of shares in the private canal company in response to the company's continuing financial problems in the face of the continental financial panic of 1837.
First Welland Canal still present today in Wainfleet township. First Welland Canal The Welland Canal has gone through many incarnations in its history. Today, five distinct canal-construction efforts are recognized. The retronym First Welland Canal is applied to the original canal, constructed from 1824 to 1829 and 1831 to 1833. The Great Lakes form an excellent navigation route into the interior of North America. Downstream from Niagara Falls, ships can reach the port city of Montreal without encountering major difficulties. Upstream, the lakes are navigable all the way to the western end of Lake Superior. Early on during the European settlement of North