Usgs topographic map symbols. The topographic maps on topozone were created by the united states geological survey usgs and have evolved for more than a century. A topographic map is a two dimensional representation of a three dimensional land surface. Symbols are used in topographic maps to identify cultural and natural features. View all of our high quality shaded relief usgs topo maps forest service maps satellite images and custom map layers for free.
Topographic map symbols and legend map symbols. Without symbols we wouldnt have maps. Interpreting the colored lines areas and other symbols is the first step in using topographic maps. A map is a representation of the earth or part of it.
Features are shown as points lines or areas depending on their size and extent. The distinctive character istic of a topographic map is that the. Perry castenada map library. Topographic map legend and symbols.
Un cartography section maps. What is a topographic map. Since a map is a reduced representation of the real world map symbols are used to represent real objects. The pubs warehouse provides access to over 150000 publications written by usgs scientists over the century plus history of the bureau.
Symbols come in different shapes sizes and colors to uniquely identify such features on the map.