The Welland Canal is a ship canal linking Lake Ontario to Lake Erie. As part of the St. Lawrence Seaway, this 42-km canal enables ships to bypass Niagara Falls.
Mapping Source:
The Neptis Foundation mapped the canal based on St. Lawrence Seaway Management Corporation, Great Lakes St. Lawrence Seaway System: http://www.greatlakes-seaway.com/en/navigating/map/
Additional Information:
Welland Canal: http://www.wellandcanal.com/