The canal was first proposed in the 1780s, then re-proposed in 1807. A survey was authorized, funded, and executed in 1808. Proponents of the project gradually wore down opponents; its construction began in 1817, and it opened on October 26, 1825. The canal has 34 numbered locks starting with Black Rock Lock ((Buffalo) and ending downstream with the Troy Federal Lock. It has an elevation difference of about 565 feet. Political opponents to the canal and to New York Governor DeWitt Clinton denigrated it as “Clinton’s Folly” or “Clinton’s Big Ditch”. It was the first transportation system between the East Coast of the United States and the western interior that did not require portage. rochestermilitary.com