6 days ago · Part of the U.S. Department of the Interior, the USGS began in 1879 to study the nation’s lands and resources. Today, we monitor, analyze, and predict Earth’s changing systems.

The U.S. Geological Survey (USGS) is the nation's largest water, earth, and biological science and civilian mapping agency. It collects, monitors, analyzes, and provides scientific …

2025-12-18 07:13:41 (UTC-08:00) 2.7 km

In 2015, the USGS unveiled the topoView website, a new way to view their entire digitized collection of over 178,000 maps from 1884 to 2006. The site is an interactive map of the …

The provided maps are not for purchase or for download; they are to be used as a guide for reference and search purposes only; layers not owned or managed by the USGS may not …

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Dec 4, 2025 · 5.9 earthquake alert Thursday morning was a false alarm, USGS says ShakeAlert early warning system lit up more than 600,000 phones up across Northern California at 8:06 a.m.

Dec 13, 2025 · The federal government and earthquake experts blamed a technical glitch for the alert that sent warnings hundreds of miles away last week.

US Topo is the current USGS topographic map series for the Nation. These are modeled on the legacy 7.5-minute maps, but are mass-produced from GIS databases of The National Map and …

Earthquake Photo Collections USGS and non-USGS collections of earthquake-related features and effects and shaking damage. Search Earthquake Catalog View historic seismicity, find …