Sixmile Canyon, Nevada - 7.5 Minute Series Topo Map Quaternary Studies;100k Geologic Maps Tom Wharton retired from full-time

Tom Wharton retired from full-time work at The Salt Lake Tribune in 2016 after working as an outdoor writer

Whether you're a seasoned hiker

Fish Springs

and that public officials require reliable hazard information as they plan for future growth

Sixmile Canyon, Nevada - 7.5 Minute Series Topo Map Quaternary Studies;100k Geologic Maps Tom Wharton retired from full-timeThe 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