What is a contour interval?

A contour interval is the vertical distance between two contour lines on a topographic map. It represents the change in elevation between those two lines. For example, if the contour interval on a map is 10 feet, each contour line represents a change in elevation of 10 feet from the adjacent line.

Contour intervals can vary depending on the scale of the map and the terrain being represented. In flat areas, a smaller contour interval may be used to show subtle changes in elevation, while in mountainous regions, a larger contour interval may be used to simplify the representation of the terrain.

Contour intervals are important for hikers, climbers, and other outdoor enthusiasts as they provide valuable information about the elevation and steepness of the terrain they will be traversing. By following contour lines on a map, they can navigate through the landscape more accurately and efficiently.