The vertical distance between adjacent contour lines on a topographic map represents elevation changes on the terrain. Determining this value involves considering the map’s scale and the intended level of detail. This determination is crucial for accurately interpreting the map’s depiction of landforms and elevations.
This values selection significantly impacts the readability and utility of the map. A smaller value provides more detail but can clutter the map, while a larger value simplifies the map but sacrifices precision. Historically, its selection depended on the terrain’s characteristics and the map’s purpose, such as for navigation, construction, or resource management. The right value ensures that the map effectively conveys the terrain’s shape and elevation changes.