Great Lakes-St. Lawrence Seaway System
Canada built canals and four locks in territorial waters between Valleyfield, Québec, and Montréal; built a canal and lock at Iroquois, Ontario; and deepened channels of the Welland Canal. There are opportunities to stop and observe the locks and canals in operation along the route. For information about boating facilities, phone (202) 366-0091 or (613) 932-5170 for the Canadian Management Corporation.