Did you know that volcanic eruptions occur in California about as frequently as large earthquakes? Learn more in a new, online public lecture about the USGS California Volcano Observatory, which studies and monitors over eight different volcanic areas in California that might potentially erupt (like Lassen Peak in 1914).
Maps for America
Do you teach about topographic maps? Our 1979 publication, Maps for America, is now available as a free PDF. Although some of it is no longer current, it's still the best handbook for topographic maps, with extensive details about information in the map collars, map symbols, and more.
Biology, Geography, Geology, Water, and much more...
Search USGS Fact Sheets
Search thousands of informative Fact Sheets and publications written for a non-technical audience. Be sure to type "Fact Sheet", "General Information Product" or "Circular" under the "Series Name" box.