Welland Canal and crossings are numbered from north to south. The following illustration depicts the profile of the Welland Canal. The horizontal axis is the length of the canal. The vertical axis is the elevation of the canal segments above mean sea level. If assigned by the St. Lawrence Seaway Authority. The original bridges across the fourth canal were numbered in order. Numbering was not changed as bridges were removed. Welland Canal The Welland Canal is a ship canal in Ontario, Canada, connecting Lake Ontario and Lake Erie. It forms a key section of the St. Lawrence Seaway. Traversing the Niagara Peninsula
First Welland Canal Wainfleet, and had made significant progress before Deep Cut work was resumed the following April. However, the rains continued. On November 9, 1828, just two weeks' worth of work before completion of the Deep Cut, the banks of the cut near Port Robinson collapsed into the excavated channel, killing an unknown number of workers below. More landslides followed, and it soon became evident that making a cut deep enough as to use the Welland River as the source of canal water would not be possible. An alternate, sufficiently high source of water was necessary. Since the construction of a channel