Contour Map

A map that shows the change in value of a variable over a geographic area through the use of contour lines. For example, a contour map of elevation has lines that trace points of equal elevation across the map. See also contour line and topographic map.

Related terms:

• Topographic Map
• Contour Line
• structural contour map
• structure-contour map
• potentiometric map
• pressure contour
• structure contour
• isolith map
• isobaric map
• rate-of-change map