Carson Sink, Nevada - 30x60 Minute USGS Topographic Map Magnifiers and Loupes Pages: 144

Pages: 144

and Mike Luers

Electronic supplements:

in 855 full-color images

and Echo Bay are highlighted

Carson Sink, Nevada - 30x60 Minute USGS Topographic Map Magnifiers and Loupes Pages: 144The distinctive characteristic of a topographic map is that the shape of the Earth's surface is shown by contour lines. Contours are imaginary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steepness of slopes. A topographic map shows more than contours. The map also includes