Bill, Wyoming - 30x60 Minute USGS Topographic Map First Aid Books The purposes of the map

The purposes of the map and accompanying geodatabase are to show and characterize landslides and debris-flow areas and provide information useful for managing landslide-related issues within the burn area

Pages: 183

and 16 night-sky charts

Edited by: A

Bill, Wyoming - 30x60 Minute USGS Topographic Map First Aid Books The purposes of the mapThe 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