USGS topographic data now available on mobile devices
Users of Android and iPhone mobile devices can now access USGS digital topographic maps on the go. Using GPS, they can zoom in on their precise location allowing for precise navigation. The type of data that are available includes USGS imagery and topographic maps from The National Map, as well as road and contour layers.
Even where cell phone services are unavailable, users can navigate using the Mobile Atlas Creator. By building small mobile atlases with USGS data over any area of interest at multiple scales, topographic data is even available offline and outside of cell phone coverage.