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USGS · 70039406

USGS Maps

Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
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Abstract

Most USGS topographic maps use brown contours to show the shape and elevation of the terrain. Elevations are usually shown in feet, but on some maps they are in meters. Contour intervals vary, depending mainly on the scale of the map and the type of terrain.

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Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey. 1994. USGS Maps. https://doi.org/10.3133/70039406

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