Frequently asked questions about the U.S. Geological Survey and its science.
ASK USGS contact form
Contact the subject matter experts at the U.S. Geological Survey.
USGS Library website
Authorized by Congress in 1879, the U.S Geological Survey Library is recognized as one of the world’s largest Earth and natural science libraries, providing services, collections, and expertise that are essential to the USGS mission and the global geoscience community. The USGS Publications Warehouse is brought to you by the USGS Library.
USGS Library catalog
Search the physical and electronic resources available from the USGS Library.
USGS Denver Library Photographic Collection
The Denver Library Photographic Collection is an archive of more than 500,000 still photographs, slides, glass plate slides, lantern slides, negatives, and sketches dating from the 1870s and taken by USGS scientists as part of their field studies. More than 47,000 images from the collection are available on the USGS Denver Library Photographic Collection website.
Search or browse print publications, maps, and educational products from the USGS available to order.
ScienceBase provides access to aggregated information derived from many data and information domains, including feeds from existing data systems, metadata catalogs, and scientists contributing new and original content.
USGS Science Data Catalog
The USGS Science Data Catalog provides seamless access to USGS research and monitoring data from across the nation. Users have the ability to search, browse, or use a map-based interface to discover data.
National Geologic Map Database
Provides access to more than 100,000 geologic maps and other types of geoscience reports and data published from the early 1800s to the present day, by the USGS, the State Geological Surveys, and hundreds of other organizations.
TopoView provides a visual overview of the National Map's Historical Topographic Map Collection. It serves maps in GeoTIFF, JPG, and KMZ versions of the HTMC maps, in addition to the product standard GeoPDF.
USGS EROS Archive
USGS Earth Resources Observation and Science (EROS) Center archive spans from 1937 aerial photographs to millions of satellite images of the Earth’s surface, starting with the original Earth orbits in the 1960’s and first Landsat satellite in 1972, to current hourly additions of satellite images.
National Environmental Methods Index (NEMI)
NEMI is a searchable database that allows scientists and managers to find and compare analytical and field methods for all phases of environmental monitoring.
U.S. Fish and Wildlife Service National Digital Library
The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video from the USFWS, most of which are in the public domain.
National Park Service Electronic Technical Information Center
The National Park Service Electronic Technical Information Center is the the electronic document management system used to manage NPS-generated planning, design, construction drawings and related technical report documents.
Science.gov searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results.