Lower Valley, Idaho - 7.5 Minute Series Topo Map Nearby States Hiking Books Klamath River

Klamath River

There are ancient treasures hidden across the American Southwest

Photographically organized by color for quick and easy identification

To know how the West was really won

cross-country ski

Lower Valley, Idaho - 7.5 Minute Series Topo Map Nearby States Hiking Books Klamath RiverThe 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