The space between contour lines on a topographical map is a contour interval. The contour interval is an even space that represents an increase in elevation. For instance, if the map uses a 20-foot interval, there are co... More »

Topographical maps are essential for the study and measurement of various terrains. One of their defining features is the presence of contour lines, which represent the elevation levels of a landscape. The bottom of a to... More » Geography Maps & Cartography

The term "contour interval" refers to the vertical distance between contiguous contour lines in terms of elevation. Commonly illustrated on a topographic map, the elevations between contour lines are uniformly spaced alo... More »

On topographic maps, V-shaped contour lines that point downhill indicate sharp, narrow ridge lines. Ridge lines help people recognize areas of high and low ground when hiking, fishing, hunting or engaging in other outdoo... More »

Contour lines on a map indicate elevation or depth. Numeric notations on contour lines refer to the level of elevation, or height above sea level. More »

Chloropleth maps present the variation of a certain measurement over physical space. Each unit of space represents a single point of normalized data. These maps allow for easy visual comparison of a certain factor, like ... More »

Read land elevation maps by noting the shape and elevation levels of the contour lines drawn on them. Begin by determining the vertical distance between adjacent lines. This varies from one map to another, but remains co... More » Geography Maps & Cartography