La Grande, Oregon - 30x60 Minute Series Topo Map Other State Forest Service Maps and the others for comparison

and the others for comparison purposes

and by other means

By: Bill Fiero

and scenic driving

By: Greg N

La Grande, Oregon - 30x60 Minute Series Topo Map Other State Forest Service Maps and the others for comparisonThe 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