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Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows the locations of railways and canals as of 1971. The railway names and operators are shown and whether or not the railway is operated as a common carrier or a private carrier is denoted. Canals of the St. Lawrence Seaway as well as other waterways and locks are shown on the map.

Contained within the 1st Edition (1906) of the Atlas of Canada is a map that shows canals, as well as locations and types of Lighthouses along the St. Lawrence and Great Lakes. In addition, the map also shows sailing routes through those water bodies. There is a table of sailing distances, in geographical miles, between the ports of the United States and Canada on the Great Lakes and St. Lawrence. Statistics of freight and passenger traffic through the canals, total cost of maintenance, and the construction of Canadian canals, are shown as of 1903-1904.

Contained within the 2nd Edition (1915) of the Atlas of Canada is a map that shows the canals, routes and types of Lighthouses along the St. Lawrence and Great Lakes, circa 1915. There is a table of sailing distances, in geographical miles, between the ports of the United States and Canada on the Great Lakes and St. Lawrence. Statistics of freight and passenger traffic through the canals, total cost of maintenance, and the construction of Canadian canals, are shown as of 1910 and 1911. There are also steamship routes from Canadian ports to other ports in Canada and in the U.S.

Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows the locations of railways and canals as of 1971. The railway names and operators are shown and whether or not the railway is operated as a common carrier or a private carrier. Canals and locks are shown on the map.

Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the location and extent of rural municipalities in the Great Lakes/Saint Lawrence area circa late 1950s. County, township and other rural municipalities are indicated. Tables for numbered municipalities are included, listed by the province in which it is located.

All manmade waterbodies, including reservoirs and canals, for the province

Collision, General cargo vessels Florence Spirit and Alanis, Welland Canal, Ontario, 11 July 2020

Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the location and extent of rural municipalities in Eastern Canada circa late 1950s. County, township and other rural municipalities are indicated. Key tables for numbered municipalities are included.

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a map that shows populated places and transportation routes with 1867 or 1871 data. The tables list canals and populations by size category (1871 Census). The map shows the rest of British North America at the time of Confederation.

Canada is a maritime nation with access to three oceans (Atlantic, Pacific, and Arctic), and shared access to the longest inland waterway system in the world, the Great Lakes St. Lawrence Seaway system of waterways. The map shows approximately 700 small craft harbours, the Seaway (including major locks) and vessel traffic service zones. The Canada Marine Act governs Canada’s port and harbour systems. The 700 harbours form the National Harbour System, managed by Fisheries and Oceans Canada to ensure that harbours are safe and accessible for commercial fisheries and recreational boaters.