Quads, or quadrangles, generally refer to USGS maps that cover 7.5 arc minutes (one minute of arc is equal to one-sixtieth of a degree). Basically each quad covers an area between 49 and 70 square ...

Digital US Topo maps are designed to look, feel, and perform like the traditional paper topographic maps for which the USGS is so well known. However, in contrast to paper-based maps, ...

WASHINGTON DC — Hikers, hunters and other outdoor recreationists will be pleased to know that free digital topographic maps are now available online from the U.S. Geological Survey.Here's the ...

The DeLorme Topo USA vector maps begin with the small-scale 1:100,000 USGS metric topography map. While the 7.5 minute quad (Illustration 1) depicts a through trail, the small scale 1-to-100 shows ...

Unlike traditional topographic maps, US Topo maps are mass-produced from secondary sources, on a programmed refresh cycle, using the best available data at the time of production. With the release of ...

Any map-lovers looking to lose track of time for a few hours should say hello to the newly-arrived USGS Historical Topographic Map Explorer, which allows users access to a treasure trove of maps of ...

The United States Geological Survey (USGS) recently posted online two moon maps — a photo mosaic and a topographic map — that were constructed using images and data captured by NASA's long ...

On USGS quadrangle maps from 1947-1992, oil wells are marked by hollow black circles. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert ...

To scout new wilderness I'll often purchase a few United States Geological Survey (USGS) quad maps and maybe buy a guidebook or two. But for my Utah trip I needed more.

When the USGS decided to pull its map store out of Fairbanks about a decade ago, ... where "the University of Alaska Fairbanks carries all of the USGS topographic and state maps covering Alaska." ...

The first batch of new, more accurate Alaska maps that will eventually cover the whole state is out and free to the public as part of a state and federal project to replace old topographic maps ...