San Rafael Knob, Utah - 7.5 Minute Series Topo Map Coal Resources and the ecosystems they lived

and the ecosystems they lived in millions of years ago

and from north-central Oregon

Channel adjustment in response to surface-water development in the Duchesne River watershed

and hazards from debris flows

traverses the quadrangle

San Rafael Knob, Utah - 7.5 Minute Series Topo Map Coal Resources and the ecosystems they livedThe 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