2 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.

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 United States that allows …

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 understanding of …

2025-12-26 11:27:52 (UTC-08:00) 616.5 km

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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 reflect new naming …

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1:24,000 USGS DRG files are offered for all quadrangles in Illinois by file name in two projection and format combinations. The USGS Topographic Map Index (5.2 MB) can assist you in locating a …

The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines: biology, …

We provide science about the natural hazards that threaten lives and livelihoods, the water, energy, minerals, and other natural resources we rely on, the health of our ecosystems and environment, and …