Franklin, Idaho - 7.5 Minute Series Topo Map Self Reliance The San Rafael River mining

The San Rafael River mining area

wilderness areas

Hydrogeology of Government Creek Basin

Engineering geologic problems caused by soil and rock in southwestern Utah

Franklin, Idaho - 7.5 Minute Series Topo Map Self Reliance The San Rafael River miningThe 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