The National Topographic Data Base (NTDB) is a digital data base developed by Geomatics Canada. It covers the entire Canadian landmass and contains the features normally found on topographic maps at the scales of 1:50,000 and 1:250,000: hydrography, hypsography (contours), vegetation, the road network, roads, the rail network, the electric power network, designated area, land form, wetlands, and manmade features.
