US Topo Map Base Layers

Detailed Description
Building on the success of more than 130 years of USGS topographic mapping, the US Topo series is the current generation of maps of the American landscape. Please visit US Topo: Maps for America for more information. Image shows the base layers of US Topo maps: elevation, hydrography, geographic names, land cover, boundaries, transportation, structures, & orthoimagery.
Sources/Usage
Public Domain.