Contour Intervals On A Topographic Map

Topographic maps may seem overwhelming and difficult to understand at first.

Contour intervals on a topographic map. For topographic maps the interval is usually 10 or 20 feet or meters. Log in sign up. This means that there would be five spaces and four non index contour lines between each index contour. Political maps physical maps topographic maps thematic maps and general reference maps each catering to specific needs and uses.

For instance if the map uses a 20 foot interval there are contour lines at zero 20 40 60 80 and 100 feet. 2 contour lines never touch or merge or split. Topographic maps however are some of the most useful maps as they visualize the topography relief of the earth. Log in sign up.

By making the change in. A topographic map of coopers rock state forest west virginia. 3 unless they end at the edge of the map contour lines should form a closed circle or ellipse. Index contours are bold or thicker lines that appear at every fifth contour line.

A contour interval is the vertical distance or difference in elevation between contour lines. A map of a relatively flat area may have a contour interval of 10 foot or. Learn vocabulary terms and more with flashcards games and other study tools. Often index points are given along with index contours.

Start studying topographic maps. Terms in this set 27 topographic map. Rules for making contour maps. Contour lines and intervals.

Photo courtesy usgs in the field of cartography and geography there are many different kinds of maps. The elevation difference between adjacent contours called the contour interval is selected to best show the general shape of the terrain. Contour interval a topographical map will contain many contour lines but the change in elevation between each line will remain the same. Lighter contour lines do not have elevations but can be determined by counting up or down from the nearest index contour line and multiplying by the contour interval.

The contour interval is an even space that represents an increase in elevation. The contour interval is stated on every topographic map and is usually located below the scale. A map that shows the three dementional surface features of earth. Upgrade to remove ads.

A contour line is a line drawn on a topographic map to indicate ground elevation or depression. Topographical maps can use larger intervals to indicate steeper terrain with larger increases in elevation.