How do I figure the vertical exaggeration of a topographical map?

A topographical map is a two-dimensional representation of a three dimensional surface, so it does not have vertical exaggeration. If you are referring to a cross-section of the map, then it is a simple matter. Find out, by measurement or calculation how much distance across the cross section is represented by 1 cm (or 2 cm). Then find out how much that same distance is represented by 1 (or 2) cm vertically. For example, say 1 cm = 1000 m across the map. Now, find a point on the cross section where you know the elevation difference between two points and see how many cm represents that elevation difference. Let's say 1cm vertically = 250 m. Since 1cm horizontally = 1000 m and vertically = 250 m, then the exaggeration is X 4 (think of 1000 m vertically would = 4 cm).How do I figure the vertical exaggeration of a topographical map?
A topographic map has no vertical exaggeration. It is not a 3-dimensional drawing, it is 2-dimensional.





It does, however; depict elevation using contour lines, lines of equal elevation. If you are looking for the elevation interval contour lines represent, look at the legend at the bottom of the map. It will tell you the contour interval. Many areas are represented by a 20-foot contour interval. That means each contour line is 20 feet more or less than its neighbor. A contour line will appear for every 20 foot change in elevation. Going up a hill, a contour line may be 1380 feet, the next is 1400 feet, the next is 1420 feet, and so on. It shows an increase in elevation. Flat area maps may have a contour interval of 10 feet, while more rugged areas may be 50 feet. By studying the shape and elevation of the contour lines, you can tell what the topography or lay of the land is like.





You cannot apply any type of exaggeration to the contour lines, so there is no vertical exaggeration.