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Topographic Map Symbols. What is a Topographic Map? map is a representation of the Earth, or part of it. The distinctive character-istic of a topographic map is that the shape of the Earth’s surface is shown by contour lines.
Learn how to interpret the colored lines, areas, and other symbols on topographic maps. See full descriptions and images of each map feature type, such as buildings, roads, rivers, and contours.
Learn how to read USGS topo maps with this legend that explains the colors and symbols for different features. See examples of contours, roads, streams, vegetation, cities, and more.
Topographic maps are packed with symbols and legends that convey important information about the landscape. Each symbol represents a specific feature, such as rivers, roads, buildings, and vegetation. Understanding these symbols is crucial for interpreting the map accurately.
The set of symbols and their appropriate use on National Topographic System (NTS) maps is described by a specific set of rules: Standards and Specifications for Polychrome Maps. This guide ensures uniform depiction of land features on both 1/50 000 and 1/250 000 maps.
In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods.
Interpreting the colored lines, areas, and other symbols is the first step in using topographic maps. Features are shown as points, lines, or areas, depending on their size and extent. For example, individual houses may be shown as small black squares.
