Herder Creek, Nevada - 7.5 Minute Series Topo Map Kelsey Low-sun-angle aerial photography was used

Low-sun-angle aerial photography was used to highlight certain topographic features

and river mileage is noted as well for those exploring by boat

These formations range in age from Permian to Cretaceous

Culled from her popular Salt Lake Tribune "Living History" column

and 97 measurements are from basin fill

Herder Creek, Nevada - 7.5 Minute Series Topo Map Kelsey Low-sun-angle aerial photography was usedThe 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