A:
Access USGS - San Francisco Bay and Delta - Main page for accessing links for information and data on the San Francisco Bay estuary and its watershed with links to highlights, water, biology, wetlands, hazards, digital maps, geologic mapping, winds, bathymetry and overview of the Bay [Department of the Interior, U.S. Geological Survey (USGS)]

Africa Data Dissemination - Collects, analyzes, and distributes regional, national and sub-national information to decision makers about potential on current famine or flood situations. [Department of the Interior, U.S. Geological Survey (USGS)]

Alaska Volcano Observatory (AVO) - Homepage for Alaska Volcano Observatory (AVO) with offices in Anchorage and Fairbanks monitors and studies Alaskas hazardous volcanoes. Links to featured news, updates, publications and products, and a volcano atlas for Alaska [Department of the Interior, U.S. Geological Survey (USGS)]

Albuquerque Seismological Laboratory - The USGS Seismological Laboratory in Albuquerque installs and maintains a world network of seismograph stations, collects the seismic data, and evaluates seismic instruments. Site includes links to ASL publications, earthquake maps and seismic data [Department of the Interior, U.S. Geological Survey (USGS)]

Applied Geosciences - Expertise includes regulatory site characterization and sampling services, flow and transport computer modeling, and analyses of the effects of contaminant releases on human health and the environment [Department of Energy (DOE), Idaho National Laboratory (INL)]

Ask an Earth Scientist - Answers specific questions related to volcanoes, earthquakes and seismology, natural hazards, environment and hydrology, sediments and sedimentary rocks, igneous rocks and minerals [National Aeronautics and Space Administration (NASA)]

Ask-A-Geologist - Site to submit a question to Ask-A-Geologist for answers to geological questions via email [Department of the Interior, U.S. Geological Survey (USGS), Western Coastal and Marine Geology Team]

C:
Cascades Volcano Observatory (CVO) - Portal to information provided by the Cascades Volcano Observatory in Vancouver, WA with links to reports and activity in the Cascade Range and other volcanoes and multiple links to general information on volcanology, reports, research, and maps [Department of the Interior, U.S. Geological Survey (USGS)]

Center for Nuclear Waste Regulatory Analyses (CNWRA) - Has a unique and powerful range of technical expertise for addressing complex earth sciences and engineering problems within a multidisciplinary, integrated framework [Ad Hoc Organizations, Nuclear Regulatory Commission (NRC)]

Coastal and Marine Geology Program interactive map server - Interactive map server for viewing and creating maps using available coastal and marine geology data sets for offshore and coastal U.S. and the Gulf of Mexico with links to available data and metadata that can be downloaded. [Department of the Interior, U.S. Geological Survey (USGS), Coastal and Marine Geology Program]

Crustal Imaging and Characterization Team - Crustal imaging and characterization home with links to projects on earth science technologies including geophysical, geochemical, and isotope studies, online publications and data, and newsletter: Minerals News. [Department of the Interior, U.S. Geological Survey (USGS), Crustal Imaging and Characterization Team]

E:
Earth - Explores the Earth's air, land and seas to learn more about our home planet and understand how other planetary systems may work [National Aeronautics and Space Administration (NASA), Jet Propulsion Laboratory (JPL)]

Earth science photographic archive - Photographic archive collection from the USGS Photo Library. Photos dated 1868-1992 are of geology, earthquake damage, national parks, pioneer photographers, St. Helens eruption and mining and available at 100, 700 and 1400 dots/inch resolution. [Department of the Interior, U.S. Geological Survey (USGS)]

Earthquake: Did you feel it? - Project to collect information about ground shaking associated with significant earthquakes. Provides a questionnaire to fill out what you felt following an earthquake in the United States or in other countries [Department of the Interior, U.S. Geological Survey (USGS), Earthquake Hazards Program]

F:
Fossil Energy Technologies - Conducts innovative, science-based research and development of new fossil energy technologies [Department of Energy (DOE), Idaho National Laboratory (INL)]

G:
GISDATA Web Mapping Portal - Access to public web map services and interfaces developed at the EROS Data Center searchable by keywords and categories (map interfaces, related sites, projects, and data) with latest news items and updates. [Department of the Interior, U.S. Geological Survey (USGS)]

Geologic hazards: landslides - Links to information on the geologic hazard landslides including landslide program, landslide events, people and projects, landslide mitigation program, program publications and searchable bibliography. [Department of the Interior, U.S. Geological Survey (USGS)]

Geology - Homepage about the Geology Discipline with links to whats new, publications, real-time hazards information, GEODE - Geologic Data Explorer, partnerships, fellowship program, and major science programs. [Department of the Interior, U.S. Geological Survey (USGS)]

Geology in the Eastern Region - Homepage with links to major research programs and teams: Mineral Resources, Minerals Information, Energy Resources, Earth Surface Processes, and Coastal and Marine Geology Field Centers [Department of the Interior, U.S. Geological Survey (USGS)]

Geomagnetism - Overview of geomagnetism with National Geomagnetic Information Centers activities, computation methods including shareware software Geomagix, publications, available CD-ROMs of magnetic information, plus data, charts, magnetic models, and data plots. [Department of the Interior, U.S. Geological Survey (USGS)]

Geomechanics Laboratory - A user facility that enables the measurement of rock properties under a wide range of simulated service conditions up to very high pressures and complex load paths [Department of Energy (DOE), Sandia National Laboratories (SNL)]

Geoscience and Environment Center - Focused on the understanding of the subsurface related to nuclear environmental activities [Department of Energy (DOE), Sandia National Laboratories (SNL)]

Geosciences Research - Improves the understanding of chemical, biological, and geophysical processes in the subsurface, and how these processes affect water and contaminant transport [Department of Energy (DOE), Idaho National Laboratory (INL)]

Global Volcanism Program (GVP) - Stay current on recent activity [Ad Hoc Organizations, Smithsonian Institution]

Global change research - earth surface dynamics - Homepage for USGS Global Change Research projects which seek to understand the interrelationships among earth surface processes, ecological systems, and human activities. Links to projects with descriptions and products and downloadable poster. [Department of the Interior, U.S. Geological Survey (USGS)]

Gulf of Mexico Integrated Science - Website of the Gulf of Mexico Integrated Science program to understand the framework and processes of the Gulf of Mexico using Tampa Bay as a pilot study. Links to publications, digital library, water chemistry maps, epipytes,and field trips. [Department of the Interior, U.S. Geological Survey (USGS)]

H:
Hawaiian Volcano Observatory (HVO) - Latest news with links to information on Kilauea, Mauna Loa, and other volcanoes, earthquakes, volcanic hazards, photo archive, and general information about the center [Department of the Interior, U.S. Geological Survey (USGS)]

I:
Institute of Geophysics and Planetary Physics (IGPP), Lawrence Livermore National Laboratory - Research in the physics and chemistry of the solid Earth, including seismology, geochemistry, experimental petrology, mineral physics, active tectonics, and hydrology [Department of Energy (DOE), Lawrence Livermore National Laboratory (LLNL)]

L:
Laboratory for Satellite Altimetry (LSA) - Specializes in the analysis of satellite altimeter data related to problems in physical oceanography and marine geophysics [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), Office of Research and Applications]

Landsat Image Mosaic of Antarctica (LIMA) - The first-ever true-color high-resolution satellite view of the Antarctic continent enabling everyone to see Antarctica as it appears in real life [National Aeronautics and Space Administration (NASA)]

Lawrence Berkeley National Laboratory Earth Sciences Division - Performs fundamental research in hydrogeology and reservoir engineering, geophysics and geomechanics, geochemistry, microbial ecology, and enironmental engineering [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL)]

M:
Marine Geology and Geophysics - Data from the ocean floor [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Geophysical Data Center (NGDC)]

Mid-Continent Mapping Center - Overview of the Mid-Continent Mapping Center, Rolla, Missouri, a production, research, and data management facility for maps and digital cartographic data products, with links to directions, programs, mapping products, and visitors' center. [Department of the Interior, U.S. Geological Survey (USGS), Mid-Continent Mapping Center (MCMC)]

Mineral Resources On-Line Spatial Data - Website for geospatial data on mineral resources of the U.S. or the world that users can locate by geographic area, view, and download [Department of the Interior, U.S. Geological Survey (USGS)]

Minerals Resources Program - Homepage of the Mineral Resources Program that provides current, impartial information on the occurrence, quality, quantity, and availability of mineral resources with links to projects, publications, spatial data, teams, issues, and news. [Department of the Interior, U.S. Geological Survey (USGS)]

N:
National Coal Resources Data System - US Coal Resource Database (USGCOAL). - Searchable database for locating information on coal resources by area, coalfield, coalbed, rank, quadrangle, source, years, or characteristics of thickness, overburden, and reliability. [Department of the Interior, U.S. Geological Survey (USGS)]

National Earthquake Information Center (NEIC); World Data Center for Seismology, Denver - Information on world earthquake activity with links to facts and lists on large earthquakes, earthquake e-mail notification, hazards and preparedness, educational links, news and highlights and other seismic information [Department of the Interior, U.S. Geological Survey (USGS)]

National Geologic Map Database Geologic Names Lexicon (GEOLEX) - Search tool for locating lithologic and geochronologic unit names for geologic studies [Department of the Interior, U.S. Geological Survey (USGS)]

National High Altitude Photography (NHAP) - Ordering and descriptive information on photography from the National High Altitude Photography (NHAP) program 1980-1989 to acquire aerial photographs of the 48 conterminous states with links to searching on EarthExplorer. [Department of the Interior, U.S. Geological Survey (USGS), National High Altitude Photography (NHAP)]

O:
Ocean Drilling Program (ODP) - Conducts basic research into the history of the ocean basins and the overall nature of the crust beneath the ocean floor [Multiple agencies involved]

Our dynamic desert landscape - Overview of studies of fragile and active landscape of the American Southwest deserts, including projects on geologic mapping, surface processes, remote sensing research, ecological processes, and earthquake hazard applications. [Department of the Interior, U.S. Geological Survey (USGS), Geologic Division, Western Region Earth Surface Processes Team]

P:
Pacific Northwest National Laboratory Publications - Provides access to citations and references of publicly-announced Pacific Northwest National Laboratory publications since 1999 with links to the documents [Department of Energy (DOE), Pacific Northwest National Laboratory (PNNL)]

Paleoclimatology Program - NOAA - Paleoclimatic data, research, and information [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Climatic Data Center]

Premium Coal Sample Program - Provides the basic coal research community with the highest quality samples for basic research [Department of Energy (DOE), Argonne National Laboratory (ANL)]

R:
RIDGE Program - Fosters interdisciplinary scientific study of mid-ocean ridge processes [National Science Foundation (NSF)]

Recreation site (USGS), your science gateway for safe and vital enjoyment of the outdoors - Gateway to useful USGS websites for recreation in nature watching and exploring, boating, camping, climbing, fishing, hiking,biking, and hunting, with links to maps, real-time streamflow, geology, photos, and plant and animal information [Department of the Interior, U.S. Geological Survey (USGS)]

Reports Catalog - Contains citations of Lawrence Berkeley National Laboratory-authored scientific and technical documents published since July 1989 [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL)]

Rocky Mountain Mapping Center in Denver, CO - Home page with mapping activities in the western U.S. with links to research activities, products, mapping liaisons, and education [Department of the Interior, U.S. Geological Survey (USGS), Rocky Mountain Mapping Center]

S:
San Francisco Bay Area Regional Database (BARD) - Homepage for downloading or viewing Digital Elevation Models (DEMs), Digital Line Graphs (DLGs), Digtial Raster Graphics (DRGs), and Digital Orthophotos images with standards, NSDI description, and metadata [Department of the Interior, U.S. Geological Survey (USGS)]

Science and Technology at Lawrence Livermore National Laboratory - Provides links to information about research in advanced defense technologies, energy, environment, biosciences, and basic sciences [Department of Energy (DOE), Lawrence Livermore National Laboratory (LLNL)]

Socioeconomic Data and Applications Center (SEDAC) - [National Aeronautics and Space Administration (NASA)]

Spectroscopy Laboratory - Links to Spectroscopy Lab projects to identify and map materials through spectroscopic remote sensing (imaging spectroscopy, hyperspectral imaging, imaging spectrometry, ultraspectral imaging, etc.) on the earth and in space. [Department of the Interior, U.S. Geological Survey (USGS)]

Standard Reference Materials (SRMs) - Approximately 1300 SRMs are currently available [Department of Commerce (DOC), National Institutes of Standards and Technology (NIST)]

U:
U.S. Geological Survey (USGS), Department of the Interior - Homepage, serving as portal to all USGS information with search options, USGS in the news, most frequently requested topics, and access to major categories of USGS information [Department of the Interior, U.S. Geological Survey (USGS)]

U.S. Geological Survey Library - Homepage for the USGS library system with links to the four libraries of the system, online catalog, forms to request information, photo archive, new acquisitions lists, and links to other useful sources of information. [Department of the Interior, U.S. Geological Survey (USGS)]

USGS Landcover Institute - Homepage for the National Land Cover Data (NLCD), a land cover classification scheme, for the United States based on data derived from Landsat Thematic Mapper satellite data. Includes links to description, products, accuracy, and program partners [Department of the Interior, U.S. Geological Survey (USGS), Coastal and Marine Geology Program]

V:
Visible Earth - A searchable directory of images, visualizations, and animations to the Earth [National Aeronautics and Space Administration (NASA)]

Volcano Hazards Program - Homepage for with feature stories, and links to worldwide volcano updates, volcanic hazards, reducing volcanic risk, USGS international programs, and resources such as educators' page, videos, and online reports [Department of the Interior, U.S. Geological Survey (USGS)]

Volcano Products - Data on volcanic activity is available [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), Satellite Services Division]

W:
Waterways Experiment Station Geotechnical and Structures Laboratory (GSL) - Researches man's interaction with the basic materials of the earth's crust: soil, rock and groundwater [Department of Defense (DOD), Department of the Army, U.S. Army Corps of Engineers (USACE), Engineer Research and Development Center]

Western Region geologic information - Links to geologic information on western states: Alaska, Arizona, California, Hawaii, Idaho, Nevada and Oregon including information on coastal and marine geology, mineral resources, earthquakes, landslides, earthquake hazards and geologic maps. [Department of the Interior, U.S. Geological Survey (USGS)]