Article
National Topographic System
The National Topographic System is a standardized method of mapping. Natural Resources Canada uses the system to produce maps that depict the country’s natural and man-made features (e.g. lakes, rivers, railways and roads). Instituted in 1927, today the NTS uses two scales: 1:50,000 and 1:250,000. In the 1:50,000 scale, 1 cm on the map represents 500 m on the ground. In the 1:250,000 scale, 1 cm on the map represents 2.5 km on the ground. Maps using the 1:50,000 scale are used for a variety of purposes, for example, recreational activities and real estate and highway planning. Because maps using the 1:250,000 scale cover a larger area in less detail, they are better suited for reconnaissance and road-tripping. (See also Cartography in Canada: 1763–Second World War.)