- United States Geological Survey (USGS)
- Official site of the USGS. - USGS Earthquake Hazards Program (5)
- Explore the USGS Earthquake Hazards Programme through sites which offer databases of earthquakes, seismological updates, maps, monitoring methods, and predictions of seismic events as researched and developed by the U.S. Geological Survey.
- USGS Water Resources Division (14)
- USGS National Mapping Information
- National mapping programme, mapping products and services, geographic analysis and monitoring, land remote sensing, and science impact. - U.S. Geological Survey Volcano Hazards Program (5)
- UNEP/GRID@
- Earth Resources Observation Systems (EROS) Data Center
- USGS EROS manages the huge and growing base of earth science data and images gathered from Earth orbiting satellites. - Biological Resources Division (8)
- U.S. Geographic Names Information System
- Find out where a city or other feature such as a mountain or lake is in the United States. - USGS National Map Seamless Data Distribution System
- Provides custom-generated digital products based on user-specified geographic extents and user-specified datasets. - Geologic Hazards Team
- Information on hazards related to earthquakes, landslides, and geomagnetism. - USGS Marine and Coastal Geology Program (3)
- USGS Energy Resources Program (3)
- USGS Learning Web
- Developed by the U.S. Geological Survey and dedicated to K-12 and lifelong learning about the land, water, plants, animals, and maps. - USGS Mineral Resources Program (5)
- Western Region Marine and Coastal Surveys
 - National Strong-Motion Program
- Dedicated to investigating strong earthquake shaking at soil and rock sites throughout the U.S., and its potential impact on engineered structures - Woods Hole Field Center@
- USGS Pasadena Field Office@
- Access USGS
- Water flow, wetlands, water quality, hazards and more, from the U.S. Geological Survey. - USGS Spectroscopy Lab
- Researching and applying methods for identifying and mapping materials using spectroscopic remote sensing on the earth and throughout the solar system. - USGS Flagstaff Field Center@
- Ask-A-Geologist
- Do you have a question about volcanoes, earthquakes, mountains, rocks, maps, ground water, lakes, or rivers? Email your earth science questions to a U.S. Geological Survey earth scientist. - USGS Employment
- Offers job openings, student employment, and volunteer opportunities. - USGS National Map Viewer
- Interactive topographic map from the USGS that reveals the U.S.'s geology, hydrology, land use, natural hazards, and transportation infrastructure. - USGS: Geographic Analysis and Monitoring Program
- Programme to improve understanding of the rates, causes, and consequences of natural and human-induced processes that shape the landscape over time. - Arid and Semi-Arid Environments
- Image products and information generated using remote sensing. - USGS Newsroom
- Features the agency's latest news releases on geological and environmental findings and issues. - USGS: Retirement Calculator
- Tool to calculate the basic annuity, retirement eligibility, and survivor benefits for employees in the FERS, CSRS, or CSRS-offset retirement system. By the United States Geological Survey. - United States Geological Survey Bulletin 1928
- Detailing the early Triassic ammonoid-bearing Union Wash formation in Inyo County, CA. - USGS Internet Resources
 - USGS Information for Visitors to Atlanta
- Information for Atlanta and surrounding areas. Includes maps, geologic setting, and water resources.
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