What do brown colors signify on a topographic map?

Brown colors on a topographic map signify contour lines, which are essential for depicting the elevation and shape of the terrain. These lines represent areas of equal elevation, helping users understand the slope and relief of the landscape. Contour lines can also indicate the steepness of a hill or valley; closely spaced lines suggest steep terrain, while lines that are spaced farther apart indicate a gentler slope. Recognizing this color coding is critical for anyone navigating or analyzing geographical features, as it allows for better planning and assessment of the terrain.

While vegetation, roads, and structures have their respective symbols and color codes on a topographic map, brown is specifically designated for contour lines, making this the most accurate identification of what the color signifies.