The U.S. Geological Survey is scanning 250,000 of its historic maps to put online. The U.S. Geological Survey (USGS) is nearly halfway through its release of more than 250,000 historical topographic ...

USGS has unveiled its most detailed national geologic map, giving the public a free, interactive way to explore underground ...

The United States Geological Survey has nearly completed its project to digitize over 200,000 topographical maps and create a free, searchable online archive The United States Geological Survey has ...

Nearly all of California has a more than 95% chance of a damaging earthquake in the next century, a new United States Geological Survey map shows. The new USGS National Seismic Hazard Model released ...

The United States Geological Survey (USGS) continues to support the delivery of its digital maps through Avenza Systems Inc.‘s PDF Maps app. It has widened the selection to more than 120,000 US Topo ...

With the release of new US Topo maps for Illinois and South Dakota, the USGS has completed the second, three-year cycle of revising and updating electronic US Topo quadrangles. Since the project’s ...

Heading outdoors with a map doesn’t just help to keep you safe – it can help you discover natural features you might otherwise have overlooked or choose the best route to a summit according to your ...