Silver Spur Ridge, Idaho - 7.5 Minute Series Topo Map Fire This digital map is presented

This digital map is presented as a Portable Document Format (pdf) and an ArcMap 9

By: Lynn Haney

deep ocean basin that paralleled the mountain chain

and Christian Hardwick

in commerce

Silver Spur Ridge, Idaho - 7.5 Minute Series Topo Map Fire This digital map is presentedThe 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