Knowing these features and how they are typically depicted by contour lines is the key to extracting the most information from a topo map. Find Shapes for More InfoĬontour lines will form shapes that define terrain features. Each contour is a line of equal elevation therefore, contours never cross. Knowing these features and how they are typically depicted by contour lines is the key to extracting the most information from a topo map. Topographic contours are shown in brown by lines of different widths. To determine the elevation change in each contour line simply take the difference in elevation between two index lines, then divide by the number of intervals between the index lines.Ĭontour lines will form shapes that define terrain features. Every fifth line in the sequence is a thicker line referred to as an index line, and somewhere along that line is the exact elevation. When you follow a path on a topographic map that crosses these contour. The lines work by connecting points on your map that represent the same elevation. A Topographic Map includes contour lines drawn to represent changes in elevation. Spaces with no lines indicate flat ground. Contour lines close together represent a steep increase or decrease in elevation, while lines further apart represent a gentle slope. ![]() ![]() The vicinity of contour lines to one another indicates the elevation lost or gained on any slope aspect. The cornerstone for all topo maps is the contour line.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |