This document provides an overview of topographic maps, including what they are, how to read them, and what features they represent. Topographic maps use contour lines to show elevation and relief of landforms. Contour lines connect points of equal elevation, and the interval between lines indicates changes in height. Slope, streams, hills, and other terrain features are represented through the spacing and shapes of contour lines. Topographic maps also use colors, labels, and other symbols to depict cultural features, vegetation, and other map elements.