Dog Knoll, Utah - 7.5 Minute Series Topo Map Hiking This book tells the stories

This book tells the stories of those men and those stations

Chuckwalla Valley

and numerous activity pages

Basin-fill sediments of the Cedar Valley Aquifer contain a high percentage of fine-grained material susceptible to compaction upon dewatering

Complemented by full-color photos

Dog Knoll, Utah - 7.5 Minute Series Topo Map Hiking This book tells the storiesThe 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