Library: Geology: Find Websites

Natural Disasters

USGS Earthquake Hazards Program
Records and reports earthquake activity nationwide.
USGS Volcano Hazards Program
Monitors active volcanoes and issues timely warnings.
USGS Geologic Hazards Science Center
Info on disaster programs.

United States Geological Survey (USGS)
Provides information on ecosystems and environment.
USGS Photographic Library
Free viewing and downloading of photographs of the U.S.G.S.'s Denver Library.
USGS Water Sources of the US
Collects and provides access to water data.
United States Environmental Protection Agency
Monitors the human impact on the nation's land, water and air.
US Department of the Interior Bureau of Land Management
Agency that manages federal land.

The National Map
US Topo quadrangles are digital topographic maps produced by the National Geospatial Program of the USGS.
National Map Viewer
Historical Topographical Maps
Converted (to GeoPDF) historical printed topographic quadrangles that are available for download.
National Geologic Map Database
National Geographic Maps