First Welland Canal reason for the error is not known. On July 4, 1818, Merritt organized a meeting in St. Catharines. The outcome was a petition sent to Upper Canada Legislature to provide for construction of a canal between the Twelve Mile Creek and Welland River. Unlike Merritt's original water-canal plan, the petition included plans for allowing boats to cross the Niagara Escarpment. In 1823, Hiram Tibbetts, an engineer, was employed to make a formal survey for the route. He suggested to dig a channel below the surface level of Welland River between present-day Port Robinson and Allanburg, and then follow the Twelve
Welland channels of the Welland Canal and connected to "solid" ground only by the relatively small plug in the old canal along the Townline Tunnel approaches. A man-made geographic feature is the Merritt Island, a strip of land approximately five kilometres long and, in some places, less than 100 metres wide. The island was created when the alignment of the First Welland Canal was constructed basically parallel to the Welland River and since the abandonment of the old canal has been established as Merritt Park, featuring a popular four kilometre-long paved trail. Welland experiences a humid continental climate (Köppen "Dfb") typical