<P> As with field notes, remote sensing data (aerial and satellite photography, for example), is raw and uninterpreted . It may contain holes (due to cloud cover for example) or inconsistencies (due to the timing of specific image captures). Most modern topographic mapping includes a large component of remotely sensed data in its compilation process . </P> <P> In its contemporary definition, topographic mapping shows relief . In the United States, USGS topographic maps show relief using contour lines . The USGS calls maps based on topographic surveys, but without contours, "planimetric maps ." </P> <P> These maps show not only the contours, but also any significant streams or other bodies of water, forest cover, built - up areas or individual buildings (depending on scale), and other features and points of interest . </P> <P> While not officially "topographic" maps, the national surveys of other nations share many of the same features, and so they are often called "topographic maps ." </P>

What characteristics of earth's surface can be determined by using a topographic map
find me the text answering this question