In keeping with rapid demand, the USGS has posted new US Topo quadrangles covering Colorado (1,794 maps) and Minnesota (1,689). These new quads replace the first edition US Topo maps for those states.

Nearly 75% of the country is at risk for a potentially damaging earthquake in the next 100 years, according to a recently updated map from the U.S. Geological Survey.

For a visualization of just how many earthquakes rival the 1994 Northridge quake in magnitude, click here to view a USGS map. It displays all earthquakes in the magnitude-6.0 to 6.9 range since 1970.

The map depicts where damaging earthquakes are most likely to occur using seismic studies, historical geological data and the latest in data-collection technology, which helped researchers ...

The NPS is celebrating its 100th anniversary this year. These new US Topo maps replace the second edition US Topo maps and are available for no-cost file download from The National Map, the USGS Map ...

The digital map—which shows the moon's features at a scale of 1:5,000,000—was put together using six regional maps made during the Apollo era, in combination with information collected during ...

A 3.0 earthquake and a 3.2-scale earthquake were picked up shortly after 1 p.m. on the U.S. Geological Survey's (USGS) earthquake map.