On the new state website, a map of California is overlain by boxes that represent a quadrangle — an area of roughly 62 square miles — covered by the earthquake fault zone map in a pale yellow.

The online map shows the state overlain by boxes representing every quadrangle -- an area of 62 square miles -- covered by an earthquake fault zone map. Clicking on a box lets users download the map.

New USGS government maps extend earthquake hazard zones nationwide, including some surprising states. The 5.8 magnitude earthquake that struck Virginia on August 24, 2011, damaged monuments like ...

A new earthquake zone map is now available on line that will show you if you are in an area that is on or near an active fault. The maps were produced by the California Geological Survey, not the ...

SACRAMENTO – Alquist-Priolo Earthquake Fault Zone Maps, designed to protect lives and property by directing construction away from known surface fault traces, are now available online.

Updated Earthquake Map Shakes Up Risk Zones. By Laura Geggel, Staff Writer. Thu, July 17, 2014 at 7:27 PM UTC.

SACRAMENTO – Alquist-Priolo Earthquake Fault Zone Maps, designed to protect lives and property by directing construction away from known surface fault traces, are now available online. Previo… ...

SACRAMENTO – Alquist-Priolo Earthquake Fault Zone Maps, designed to protect lives and property by directing construction away from known surface fault traces, are now available online.

A moderately strong, 5.7-magnitude earthquake struck in Guatemala on Tuesday, according to the United States Geological ...

Geologists have a new tool to study how earthquakes change the landscape down to a few inches, and it’s giving them insight into how earthquake faults behave. In the Feb. 10 issue of the journal ...

The 24-Hour Aftershock Forecast provided by the USGS indicates the probability of strong earthquake shaking (Modified Mercalli Intensity VI or greater—roughly, shaking strong enough to cause ...