Farnsworth Peak, Utah - 7.5 Minute Series Topo Map blm Drainage history of the Bonneville

Drainage history of the Bonneville Basin

By: Barbara Fifer and Martin Kidston

and Sonoran deserts

This publication

they are enriching for a range of ages and skill levels

Farnsworth Peak, Utah - 7.5 Minute Series Topo Map blm Drainage history of the BonnevilleThe 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