High Rock Canyon, Nevada - 30x60 Minute USGS Topographic Map UGA MP The Geologic Hazards Program of

The Geologic Hazards Program of the Utah Geological Survey (UGS) maps and defines geologic hazards and provides assistance to tax-supported entities (cities

whether the fruit is edible or poisonous

Grand Wash Cliffs

70 figures

By: Patricia Nelson Limerick

High Rock Canyon, Nevada - 30x60 Minute USGS Topographic Map UGA MP The Geologic Hazards Program ofThe 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