Black Ridge, Utah - 7.5 Minute Series Topo Map compass This map contains descriptions of

This map contains descriptions of geologic units and correlation of map units

shared community efforts

the Needles district

typical leaf counts and shape

Black Ridge, Utah - 7.5 Minute Series Topo Map compass This map contains descriptions ofThe 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