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 Mile Creek northwest to DeCew's Falls (where John DeCew owned a mill). There, it was suggested to descend the escarpment by an incline railway and continue along the creek to Port Dalhousie to reach Lake Ontario. On January 19, 1824, an act of the Legislature formed the Welland Canal Company, with a capitalization of $150,000 and Merritt as the financial agent. As part of his fundraising duties, he travelled extensively, including the United States and Great Britain. Later in 1824, a revised route was put forward for the canal. It travelled from Port Robinson to Allanburg like the previous one,