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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.
- Topographic Map Symbols - USGS Publications Warehouse
Reading Topographic Maps. Interpreting the colored lines,...
- USGS Unnumbered Series, GIP: Topographic Map Symbols
Interpreting the colored lines, areas, and other symbols is...
- Topographic Map Symbols - USGS Publications Warehouse
Reading Topographic Maps. Interpreting the colored lines, areas, and other symbols is the fi rst 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.
Topographic Map Symbols. Reading Topographic Maps Interpreting the colored lines, areas, aj^ 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.
There is no single document that describes all symbols used on all USGS topographic maps, but to help you read these maps, the USGS provides a variety of symbol guides. Two of particular value include the topographic map collection symbols guide, and the USGS Topographic maps home.
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.
See the latest legend with symbols and colors that are used on USGS topographic maps. The legend and the topo maps are free to use on a computer or a phone.
For example, a perennial stream is symbolized by a solid blue line while an intermittent stream is shown by a blue dashed and dotted line. A large reservoir is depicted by a polygon while a small reservoir may be shown by a point symbol if it is too small to show as a polygon.
