Complete list of catalog records

A catalog of earth science data produced by the U.S. Geological Survey with documentation and links to the data files. Catalog is searchable by geographic location and publication series number. Includes links to information on metadata and its use.

Links to introductory and advanced information on metadata, metadata software tools, downloadable software packages for producing metadata and general information on metadata in Spanish.

Georeferenced high-resolution mapping of bathymetry of the West Florida Shelf, Gulf of Mexico of areas suspected to be critical benthic habitats for fisheries. Includes links to images, data, metadata, and TIFF image files.

This digital map database represents the general distribution of the geology (bedrock and surficial deposits) in San Mateo County. Accompanying text file (*.txt or *.ps) provides current information on the geologic structure and stratigraphy.

A geologic map of the Santa Barbara coastal plain region in PDF format with data in GIS format (ArcInfo export, shapefile, and TIFF)

Comprehensive bibliography on the ecology, conservation, and management of North American waterfowl and their wetland habitats. Facilitates searching or downloading as *.zip files and use with ProCite utility.

This data release contains mineral resource and geology data for metallic and nonmetallic mineral sites in Wyoming. Data is provided in both spreadsheet format (Microsoft Excel) and in GIS ArcView and MapInfo. Text available in PDF format.

Catalog of bird species common to forest and rangeland habitats in the U.S. with natural histories including taxonomic information, range, and habitat descriptions to assist land managers in resource management. Text available as a *.zip file.

This updated global inventory reports on natural gas hydrate recovered or inferred from geophysical, geochemical, or geological evidence. Includes links to world location maps, inventories, references and posters. Also in PDF format files.

North American Breeding Bird Survey (BBS) is a cooperative program that monitors the status and trends of North American bird populations. Includes files of results, analyses, route collection maps and raw data.

The Raptor Information System (RIS) is a keyword catalog of over 32,000 references about the biology and management of birds of prey. Search by author, title, keyword, year of publication, or species.

Field guide to identify the reptiles and amphibians of coastal Southern California with glossary and map.

Maps of the ranges of tree species in North America compiled by Elbert Little and others were digitized for use in USGS vegetation and climate modeling studies. Can be downloaded as ArcView shapefiles and in PDF graphic files.

Report describing the results of an interdisciplinary environmental study of the World Trade Center (WTC) area after the attack on September 11, 2001. The investigations included imaging spectroscopy mapping and laboratory analysis.

Study of the relationship of changes in total solar irradiance to changes in regional precipitation in the western United States as affected by water circulation in the Pacific Ocean.

Report on the use of regression equations from measurements made by water quality monitors and analytical results of manually collected samples estimating nutrient, bacteria, and other constituent concentrations to study streams in Kansas.

Satellite images of geographic areas of interest, cities, deserts, glaciers, geologic features, disaster areas, water bodies, and wildlife linked with articles, maps, and other images such as AVHRR, photographs, and special project images.

Surficial geologic map of the Pueblo quadrangle in Colorado with text and references in PDF format, metadata, and GIS files to download.

Information on species of butterflies in North America with photos, checklists, distribution maps, aids to identification, and references.

PDF file of map of Quaternary faults and folds in Columbia prepared as part of the World Map of Major Active Faults with locations, ages, and activity rates of major earthquake-related features accompanied by database of description and activity.

Instructions on how to build a protective outdoor seismic vault used as stations for broadband seismic sensors that respond to seismic energy, temperature, and atmospheric pressure for the United States National Seismic Network in PDF format.

Maps and text (Word or PDF format) and database (Excel or HTML format) for bedrock, forest floor, and mineral soil sampling in Voyageurs National Park, Minnesota to establish the background and baseline geochemistry and terrestrial mercury sources.

Fact sheet describing plans for a San Andreas Fault Observatory at Depth (SAFOD) by drilling into the fault to install instruments for long-term monitoring near the location of the magnitude 6 Parkfield earthquakes.

USGS water resources home page for Indiana with links to detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, drought, and water quality plus GPS ground station data and publications.

List of local, state, and federal governmental agencies cooperating with the USGS in joint-funding arrangements to accomplish mutual goals in water resources studies in Kansas.

Report of completed studies that have investigated the response of river and stream channels in Kansas to a variety of human-caused and natural disturbances.

An interagency program that improves information about natural resources management and environmental protection. The Advisory Committee on Water Information identifies water information needs, evaluates information and recommends improvements.

Drought map of Kansas link to real-time data for stream gaging stations and links to historic droughts of Kansas, ground water, drought definitions, and references.

Flood map of Kansas link to real-time data for stream gaging stations and links to flood press releases, historic floods of Kansas, flood frequency data, photos, information on hydrology of floods, and flood hazard maps.

Report of completed reservoir sediment studies in Kansas using a combination of bathymetric surveying, sediment coring, chemical analysis, and statistical analysis to understand the quantity and quality of deposited sediment.

Report on the hypothesis that variations of the total solar irradiance reaching the Earth and its atmosphere affect the precipitation and runoff of the western U.S. Includes links to research papers, bibliography, and climatic data.

Archive of USGS water resources software and associated data with documentation available to the public without any fee or cost.

Links to water use reports for the United States for 1985, 1990, and 1995 comparison of use and renewable water supply by region, handbook for collecting water-use data, and other information on national water use.

Primary homepage for USGS programs in water resources with links to water data, publications and products, technical resources, major programs, and water information services.

U.S. map of real-time streamflow compared to historical values with links to U.S. maps and data of surface water, ground water, precipitation, river conditions and floods and other information on current and past water resources conditions.

Describes the studies of five small watersheds, four in the U.S. and one in Puerto Rico, under the WEBB program to understand the processes controlling water, energy, and biogeochemical fluxes with links to other watershed research.

Links to major databases on USGS real-time and historic time period data for water quality, atmospheric deposition, streamflow, and suspended sediments and links to related databases of other agencies.

Links to published materials produced by the Watershed Processes and Modeling Project on watershed model TOPMODEL, compilation of STATSGO soils data, climate change, landscape heterogeneity in ecoregions, and other links.

Brief descriptions of research programs in water resources in Kentucky with a few links to program websites. Programs include data collection projects, acid mine drainage, hydrodynamics, geology, waste site cleanup and hydrogeology.

USGS water resources home page for Kentucky with links to detailed hydrologic studies, real-time and historical data on streamflow, ground and surface water, flow duration, and water quality plus program highlights, contacts, and news.

Links to Louisiana statewide aquifer and well information by locating parish on a map or selecting parish, aquifer, region, or type of ground-water data (real-time water levels or geophysical data) from lists.

Homepage for the statewide real-time hydrologic monitoring network featuring the latest hydrologic information in Louisiana.

USGS water resources home page for Louisiana with detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, water quality, and water supply with publications, contacts, and current conditions.

Identifies computer models in USGS publications developed to study ground water for many areas of Utah.

Description of river input monitoring project's collecting and analyzing water-quality data to calculate and explain load and trend estimates of selected nutrients and suspended solids for five major river basins in the Chesapeake Bay watershed.

Description of a project to develop watershed models that can be used to track sources of fecal coliform bacteria by assigning Total Maximum Daily Loads (TMDL) to three stream segments in Virginia.

USGS water resource home page for Massachusetts and Rhode Island with detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, basins, floods, droughts, and water quality, plus district news.

Description of project to study the distribution of saline water in the aquifers of the Coastal Plain of Virginia and the potential for saline water intrusion by evaluating chloride concentrations and the factors affecting chloride distribution.

Describes project to identify sources of fecal coliform bacteria by ribotyping to develop the use of Maximum Daily Load (TMDL) values for contaminated stream segments in Virginia.

List of current water resources projects being conducted by the U.S. Geological Survey in Maryland, Delaware, and the District of Columbia with links to dedicated websites, contacts, and project descriptions.

USGS water resources home page with links to detailed hydrologic information for Maryland, Delaware, and District of Columbia on ground and surface water, water quality, real-time records, news releases, local weather, and reservoir levels.

The Maine Cooperative Snow Survey collects, interprets, and distributes information on the depth and water content of Maine's snowpack in the late winter and early spring, when the danger of flooding in Maine's rivers and streams is greatest.

Summary of USGS programs in Maine relating to data collection and hydrologic studies of streamflow, ground water, coastal areas, and ecosystems.

USGS water home page for Maine with detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, snow, and water quality plus drought watch, press releases, projects, and contacts.

Links to websites of state, county and regional, township, municipal and tribal cooperators assisting with the funding and studies of the Michigan District research projects and data collection related to Michigan's water resources.

Links to websites providing data and information related to Michigan hydrology including droughts, floods, current water conditions, Great Lakes water levels, climatology, and weather.

Query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey. Log in as a guest or as a registered user with more privileges. Uses Java Script or Applet Versions for PC, MacIntosh, and Unix programs.

Portal for links to United State water resources maps and geographic information systems (GIS) data for the United States for viewing or downloading.

Summary of the USGS benchmark glacier program to intensively monitor climate, glacier motion, glacier mass balance, glacier geometry, and stream runoff at three glacier basins, Gulkana and Wolverine in Alaska and South Cascade in Washington.

Links to projects that provide information on the relation of land use to water quality, sources of pollutants, or trends in water quality.

Water resources problems of the Great Lakes including water use, bacterial contamination on beaches, status of water resources, and ground water flow.

Colored maps and geographic descriptions of major river basins in the state of Mississippi.

Links by map location or station number to real-time stage and streamflow, real-time water quality, ground-water data, long-term hydrographs, and annual water-data reports to view and download for past and current water conditions in North Dakota.

Site for ground water level data and additional information for New Jersey wells in the most important aquifers in New Jersey. Links to well stations are grouped by county and township giving access to hydrographs and data.

Geologic description of the principal coastal and non-coastal aquifers in New Jersey and relationship to water quality and water supply.

Water District homepage with links to detailed real-time and long-term water resources data for Missouri on streamflow, ground and surface water, and water quality.

USGS water resources home page for Mississippi with links to detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, precipitation, local weather, and flooding plus current events, projects and reports.

USGS water resources home page for Montana with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, floods, and water quality plus publications and district information.

USGS water resources home page for North Carolina with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, floods, droughts, precipitation, and water quality plus district information.

USGS water resource home page for Minnesota with links to detailed hydrologic studies and historic and real-time data for streamflow, ground and surface water, floods, and water quality plus district information.

USGS water resources home page for North Dakota with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, droughts, and water quality plus district and publications information.

USGS water resources home page for Nebraska with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, and water quality plus publications and related natural resources information.

USGS water resources home page for New Hampshire and Vermont with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, water use, and water quality plus publications and district information.

USGS water resources home page for New Jersey with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, droughts, weather, and water quality plus district information.

USGS water resources home page for New Mexico with links to hydrologic studies and real-time and long-term data on streamflow, ground and surface water, and water quality plus map of basins.

Homepage for USGS projects in Nevada with links to geography, biology, geology and water projects, news items, customers, Frequently Asked Questions (FAQs), education, recreation, data, studies, and publications on Nevada.

USGS water resources home page for New York with links to current news and features, real-time and long-term data on acid rain, suspended sediment, ground and surface water, streamflow and water quality.

USGS water resources home page for Oklahoma with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, climatology, droughts, and water quality plus district and publications information.

USGS water resources home page for Oregon with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, geographic information, and water quality plus district and publications information

USGS water resources home page for Pennsylvania with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, map/GIS information, and water quality plus district and publications information

USGS home page for the Caribbean, U.S. Virgin Islands, and Puerto Rico with links to projects, GIS data, publications, and real-time data for streamflow and rainfall of Puerto Rico, U.S. Virgin Islands, El Salvador, Guatemala, and Honduras.

USGS water resources home page for South Carolina with links to detailed hydrologic studies and real-time data on streamflow, ground and surface water, GIS information, acid rain, and water quality plus district and publications information.

Report (PDF format) on an evaluation of the potential environmental impacts of contaminated ground water from a metals refinery adjacent to the Missouri River in Omaha, Nebraska testing water and sediments for contaminants and toxicity.

Information on the Interagency Hydrology Committee for Alaska, an organization of technical specialists at the federal, state, and local levels who are coordinating the collection and implementation of water resources related data in Alaska.

USGS water resources home page for South Dakota with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, and water quality plus district and publications information.

USGS water resources home page for Tennessee with links to detailed hydrologic studies and long-term and real-time data on streamflow, ground and surface water, and water quality plus district and publications information.

Links to USGS publications, bibliographies, and maps on radon in the U.S., plus links to non-USGS sites with information on radon.

USGS water resources home page for Texas with links to historic and real-time data on streamflow, ground and surface water, floods, droughts, coastal storm surge, lakes and reservoirs, and water quality plus district and publications information.

Brief descriptions and links to major USGS programs at the state, regional, national, and international level for providing hydrologic information and for appraising the quantity, quality and location of the Nation's water resources.

The U.S. ground water atlas consists of information on ground water resources of 13 regions covering the 50 States, Puerto Rico, and the U.S. Virgin Islands. Text and maps can be viewed online and downloaded as ASCII, GIF, and *.eps files.

Short descriptions and links to further information on projects using digital image processing, remote sensing, GIS and GPS technologies at the Columbia Environmental Research Center (CERC) in Missouri for biology and geomorphology research.

Software for calculating Manning's roughness coefficient values in stream channels with installation instructions for Unix and DOS systems.

Information on the laboratory facility for the development, testing, calibration and storage of USGS hydrologic instrumentation.

Access to map of data collection sites of the National Atmospheric Deposition Program/National Trends Network (NADP/NTN) with links to other maps and reports on wet atmospheric deposition (chemicals deposited via rain, sleet and snow).

Database with detailed data on sites and data collected on scour (downward erosion by streamflow) at bridges, piers, and abutments in the United States.

The USGS National Research Program for water resources supports hydrologic research in support of the mission of the U.S. Geological Survey. Site provides links to search for current projects and for postdoctoral opportunities.

Trace elements are inorganic chemicals occurring in small amounts in nature. This web site of the National Water Quality Assessment links to U.S. data, publications, news, and other sites on trace metals, metalloids and radionuclides in water.

This Nutrients National Synthesis Project site on the U.S. study of nutrients, especially nitrogen and phosphorus, as contaminants in high concentrations links to an overview, study team, featured reports, publications, and national datasets.

Homepage for the Pesticide National Synthesis Project, an assessment of pesticides in national water resources, with links to national reports, national statistics, national data, pesticide use, analytical strategy, and standards for the U.S.

Papers from a 1999 symposium on the possible effects on water resources and the environment of large agricultural feeding operations for pigs, chickens, and cattle, with links to other meetings, bibliography, and research studies. (Also as PDF files)

Lead page to connect to ground water information on the Nation's ground water resources and ground water activities of the USGS. Includes links to ground-water data, news reports, publications, field techniques, models, programs, and issues.

Lead page for detailed United States surface water information with links to real-time and historic streamflow data, suspended sediment data, USGS programs and facilities, publications, techniques, and featured news releases.

Homepage of the Office of Water Quality programs on the quality of the Nation's surface water and ground water resources, with links to general information, quality assurance, software, data, publications, USGS facilities, techniques, and programs.

List of publications in the series Techniques of Water-Resources Investigations on the procedures for the planning and conducting of specialized research in water resources.

Review of a study monitoring changes in salinity in Alligator Bay, NC during a 1996 hurricane due to the influx of fresh and saltwater and the effect it would have on oyster aquaculture.

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.

Provides location-depth grids of bathymetry available for San Francisco Bay and tools for examining those grids. Data provided as GIS grids and animations.

Article from American Scientist on study of the San Francisco Bay estuary as a component of the global climate system showing that natural fluctuations might be mistaken for anthropogenic trends affecting waterflow and salinity.

Reviews the causes and frequency of blizzards in North Dakota.

Reviews frequency and distribution of tornadoes, windstorms, and hailstorms in North Dakota.

Homepage for information on geology of the North Cascades National Park in the state of Washington. Includes links to geologic story, geologic field trips, geologic maps, plate tectonics, rocks and minerals, geologic time, and glossary.

This website is a gateway to information and data on Lake Tahoe with links to Lake Tahoe Initiative, geography, history, lake facts, GIS Data, DEM, DOQ, DLG imagery, bathymetry, satellite imagery, land cover, census, soils, pictures, and general maps.

This report is the result of an extensive literature search to determine the state-of-the-knowledge regarding environmental impacts from quarrying carbonate rocks in karst formations to better use of karst resources in sustainable ways.

Photos with descriptions of water subjects and of scientists engaged in water research.

Description of 1998 drilling project at Long Valley Exploratory Well located on Long Valley Caldera's resurgent dome to monitor changing conditions beneath the dome. (Document in PDF format.)

Online GIS training course for users in GIS environments in resolving the differences in distances and coordinate readouts due to shifts in the 1927 and 1983 North American Datums when using Universal Transverse Mercator (UTM) grids.

Field methods, topics of investigation, shoreline changes, publications, and satellite imagery related to geologic and hydrologic processes affecting Lake Pontchartrain and adjacent lakes which form a large estuary in the Gulf Coast region.

Report on satellite imagery collected by the NOAA Advanced Very High Resolution Radiometer (AVHRR) on NOAA polar-orbiting weather satellites. Links are provided to imagery of north-central Gulf of Mexico and of the Lake Pontchartrain.

Brief report on map showing the relative vulnerability of the Atlantic coast to changes due to future rise in sea level. Includes links to similar maps in Open-file report 2000-178 on the Pacific Coast and 2000-179 on the Gulf of Mexico Coast.

Explanation of how geologists date rocks (to determine the ages of the Earth, fossils, mineral deposits, and other geologic events) and processes using radiometric dating techniques based on radioactive isotopes of carbon and potassium/argon.

Part A of a complex report on the results of ROCK-EVAL and vitrinite reflectance analysis of a large sample base from more than 70 wells located in three oil-rich California petroleum basins in order to study the formation of oil deposits.

Geologic glossary containing simplified definitions for technical terms used within the USGS/National Park Service website on national parks.

Description of the hydrogeologic framework of Antelope Valley and Bedell Flat in west-central Nevada north of Reno-Sparks area. Gravimetric and seismic-refraction methods were used in the study. Report available in PDF format or HTML format.

This publication (Open-File Report 95-479) is a teacher's guide to two U.S. Geological Survey maps that show gravity and magnetic data in contour form superimposed on a LANDSAT satellite image of the San Francisco Bay area.

GIS data set from the USGS National Landslides Hazards Program showing major landslide events in the United States and Puerto Rico with metadata. Map layer can be downloaded in shapefile format or SDTS format.

Framework of a national land use and land cover classification system for use with remote sensor data.

Description of chemical research on meteorites to understand the formation processes of chondrite meteorites and chondrules. Site has link to issues of Meteoritical Bulletin and signup for e-mail notification of new meteorites.

Four colored posters, Mapping the solar system, Mars Pathfinder landing site, Mars mini-globe project (can be downloaded, uses Adobe Acrobat Reader), and Venus globe with links to related websites.

Fact sheet on the historic and current conditions of mangroves of Dry Tortugas National Park, a cluster of islands and coral reefs west of Key West, Florida. Mangroves and nesting frigate bird colonies are at risk to destruction by hurricanes.

Fact sheet describing the value of The National Map designed as a network of digital databases that will provide a consistent national geographic data framework in responding to natural hazards and human-induced disasters.

Suspended-sediment concentration data were collected in San Francisco Bay during water year 2000 using optical backscatterance sensors and water samples. This report presents the data-collection methods, data, and calibration plots.

Fact sheet on the need to protect biological soil crusts in the desert. These crusts are most of the soil surface in deserts not covered by green plants and are inhabited by cyanobacterium (blue-green algae) and other organisms useful to the ecosystem.

Fact sheet (PDF format) on amphibians in Olympic National Park and overview of the habitat, the decline in populations, and rare amphibians in the Pacific Northwest including the giant salamander and tailed frog.

This report presents geochemical data generated during mineral and environmental assessments for the Bureau of Land Management in northern Nevada, northeastern California, southeastern Oregon, and southwestern Idaho, along with metadata and maps.

A synthesis of the Mineral Resources Program's past and future research directions in the western U.S. on metal contamination due to mineral deposits and mining and the environmental effects on living organisms. Chapters 1, 4, and 6 as PDF files.

Brief description of project for the Federal Emergency Management Agency to prepare and modify Flood Insurance Rate Maps based on flood frequency analysis, ground surveys, and flood profiles in Virginia.

Report presenting the data, automatic interpretations, cross sections, and resistivity maps of direct current electrical soundings at the Amargosa Desert Research Site near Beatty, Nevada using a Schlumberger array.

Complex report on the interpretation of aeromagnetic data to study hydrogeology of the San Pedro basin, Cochise County, Arizona determining geologic structure, basin fill and depth to water. Online version of a CD-ROM publication.

Overview of a project in Virginia to develop a program for assessing public supply source waters to determine their susceptibility to contamination and to determine which systems need detailed source-water assessments.

Second report of a joint project with the Tianjin Geological Academy to study sedimentary rock-hosted Au deposits in China. Links to text in PDF format with appendices in *.pdf, *.xls, *.csv, *.jpg, and *.tif formats. Also readme file of CD-ROM version.

Overview of a project to evaluate existing methods used by Virginia Dept. of Transportation to estimate flood hydrographs from small drainage basins, and evaluate the use of dimensionless hydrographs to estimate runoff volumes.

List of links to USGS research and studies on the water resources of Washington, which can be searched by subject, basin and county.

Report on multibeam sonar imaging to produce bathymetric mapping of the reef tract known as The Pinnacles, northern Gulf of Mexico with links to images (ASCII or ArcInfo formats), data, metadata, ArcExplorer 2.0 project, and cruise report.

Homepage for the Missouri District Water-Quality Data & Analysis Section with links to data networks, projects, data availability, mobile laboratories, sampling boat, quality assurance practices, and real-time water-quality data.

Local projects of the Mississippi District Office on water resources of Mississippi including studies relating to erosion, floods, water data collection, ground water flow, Geographic Information Systems (GIS) techniques, and others.

Homepage for USGS water quality information. The NWISWeb discrete sample database is a compilation of over 3.5 million historical water quality analyses in the USGS district databases. Also includes access to real-time data and a tutorial.

Homepage for USGS national surface-water data with more than 850,000 station years of time-series data for stream levels, streamflow (discharge), reservoir and lake levels, surface-water quality, and rainfall plus real-time data and tutorial.

Homepage for the U.S. Geological Survey, Department of the Interior, 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.

The Site Inventory System provides inventory of and access to data for sites at stream reaches, wells, test holes, springs, tunnels and other hydrologic locations where hydrologic data is collected by the USGS. Data can be viewed or downloaded.

USGS water resources home page for Washington State with links to detailed hydrologic studies and real-time data on streamflow, ground and surface water, water use, and water quality, plus GIS data, district and publications information.

USGS water resources home page for Utah with links to detailed hydrologic studies and long-term and real-time data on streamflow, ground and surface water, and water quality plus district and publications information.

Detailed information on Total Maximum Daily Load, the total quantity of a pollutant that a stream can carry and still conform to water quality standards, used as a measurement in the monitoring, assessment, and remediation of polluted waters.

Description of bryophytes (mosses, liverworts, and hornworts) and lichens (dual organisms of a fungus and an alga or a cyanobacterium) that are part of forest ecosystems in the Pacific Northwest with information on habitat and conservation.

Describes four communicable diseases (salmonellosis, trichomoniasis, aspergillosis, and avian pox) that can be passed from bird to bird at bird feeders and gives eight relatively easy steps that people can take to prevent or minimize disease.

Information on earthquake activity, earthquake science, and earthquake hazard reduction with links to news reports, products and services, educational resources for teachers, glossary, and current U.S. earthquake activity map.

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.

Homepage for USGS Volcano Hazards Program with feature stories, and links to worldwide volcano updates, volcanic hazards, reducing volcanic risk, USGS international programs, and resources such as educator's page, videos, and online reports.

Hawaiian Volcano Observatory's latest news with links to information on Kilauea, Mauna Loa, and other volcanoes, earthquakes, volcanic hazards, photo archive, and general information about the center.

Links to studies at the Amargosa Desert Research Site by the USGS Toxic Substances Hydrology Program studying the subsurface migration and fate of contaminants in arid environments. Links to news, remediation, photos, bibliography and techniques.

Homepage for the Leetown Science Center in West Virginia conducting research on aquatic and terrestrial organisms and their supporting ecosystems with links to directions, general description, library, projects, fact sheets, and facilities.

Homepage linking the historic journey of Lewis and Clark and the research of the USGS in the same region with links to mapping history, remarkable points on the Missouri River, educational activities, photo gallery, and publications.

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.

Portal to national mapping programs and products of the Geography Discipline with multiple links to databases, datasets, map products, National Map, National Atlas, GISDATA web, National Spatial Data Infrastructure, and geographic names.

An introduction to three related USGS digital libraries: the general-purpose Marine Realms Information Bank (MRIB); the regionally focused Monterey Bay Science (MBS) Digital Library; and the topically focused Coastal Change Hazards (CCH) Digital Library.

Homepage of the Fort Collins Science Center in Colorado with links to programs in ecological research programs, staff directory, products library, news and events, and research features and spotlights.

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.

Website for geospatial data on mineral resources of the U.S. or the world that users can locate by geographic area, view, and download.

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.

Statistics and information on worldwide supply, demand, and flow of minerals and materials essential to the U.S. economy, national security, and protection of the environment. Links to publications, recycling, and historical statistics.

Portal for Missouri River Infolinks, a clearinghouse to multiple links giving Missouri information, photo gallery, river weather forecast, projects and features, maps, meetings, history, and science research.

Research results (publications, photographs, maps) on ecological processes within the Mojave Desert Ecosystem to provide land managers with scientific understanding and tools needed to conserve and restore threatened desert landscapes.

Homepage for information on moths of North America with life history and habitats, photos, checklists, distribution maps, submitting new county records, identification tips, common questions, and references.

Portal to general information on the National Atlas of the United States with access for producing specialized maps and links to thematic maps including interactive maps, multimedia maps, map layers data warehouse, wall maps, and printable maps.

Portal of the National Biological Information Infrastructure (NBII) with links to diverse biological databases, information products, and analytical tools contributed by NBII cooperating organizations and agencies.

Homepage linking to National Cooperative Geologic Mapping Program (NCGMP) components: FEDMAP for federal mapping projects, STATEMAP for state geological survey projects, and EDMAP for geologic mapping education projects.

Main page for National Hydrography Dataset (NHD), a comprehensive set of digital spatial data about surface water features, with links to references, data, software tools, applications, tutorials, technical support, and data maintenance.

Entry to the Atlas of Antarctic Research giving a common base map for displaying research results, data, and descriptions of projects. Layers can be viewed or downloaded as Digital Elevation Models (DEMs), digital aerial photos, and satellite images.

Gateway to easy access for new visitors, students, and general audiences to the array of USGS information on the web with links to the USGS at work, events, news, how to get answers to questions, buying maps and products, and educational resources.

Links to selected partner sites where USGS maps and aerial photo images may be viewed with a web browser.

Site for publications on minerals resources with links to those online. Includes reports in series, CD-ROMS, spatial data, statistics and commodity information, and mineral resources publications of regional Mineral Resources Teams.

Thematic descriptions of research to meet the varied needs of the fire management community and to understand the role of fire in the landscape including fire management support, studies of postfire effects, and fire history and ecology.

The U.S. National Ice Core Laboratory (NICL) is a facility in the Denver Federal Center, Colorado, for long-term storage, curating, and studying ice cores recovered from the polar regions of the world with information on public tours.

Access to public web map services and interfaces developed at the EROS Data Center searchable by keywords and categories with interactive maps, viewer templates, information sheets and latest news items and updates on geospatial products.

USGS water resources home page for Virginia with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, flooding, and water quality plus district and publications information.

Descriptions, results, and data on research projects using geographic analysis and monitoring and remote sensing to study ecosystems and land processes in the Arctic region.

Links to standards prepared under the National Mapping Program to produce and maintain top quality mapping and geospatial data products. Documents may be viewed and downloaded in PDF and HTML formats with links to related information.

Homepage of the Abandoned Mine Lands (AML) initiative programs supporting actions to remedy contaminations associated with hard rock mining. Includes data from the Upper Animas River and Boulder River, bibliography of reports, and pictures.

Homepage for description of the National Stream Quality Network (NASQAN), a long-term program monitoring the concentrations and flux of sediment and chemicals in the Nation's largest rivers (Mississippi, Columbia, Colorado, Rio Grande, and Yukon).

Homepage for programs of the Biological Science Office at the Alaska Science Center in Anchorage on birds, mammals, ecosystems and habitats, fish and fisheries, and other biological subjects.

Clearinghouse for the description and availability of multiple geospatial datasets relating to Alaska from many federal, state and local cooperating agencies under the coordination of the Alaska Geographic Data Committee.

Homepage for Alaska Volcano Observatory (AVO) with offices in Anchorage and Fairbanks monitors and studies Alaska's hazardous volcanoes. Links to featured news, updates, publications and products, and a volcano atlas for Alaska.

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.

Homepage for the Dept. of the Interior's Initiative coordinated by the USGS, for amphibian (frogs, toads, salamanders and newts) monitoring, research, and conservation. Links to National Atlas for Amphibian Distribution, photos, and interactive map serve

Website to search and locate United States digital cartographic data (U.S. GeoData and Digital Raster Graphics) and aerial photography of the National Aerial Photography Program (NAPP). Files can be downloaded in HTML or PDF format.

Homepage for the Biological Resources Discipline of the USGS providing links to scientific programs, organization, and special features.

Description of a research project that evaluated environmental contaminants and their effects on species and lands under stewardship of the Department of the Interior.

Bird banding is used to study the movement, survival and behavior of birds. The Bird Banding Laboratory Site has links to the value, procedure and history of bird banding, how to report bird bands (English & Spanish), and resources for birders.

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.

Homepage for the Florida Center for Coastal & Watershed Studies in St. Petersburg, Tampa, and the U.S. Virgin Islands with links to a newsletter Sound Waves, research projects by area and topic, publications, data sets, news, and contacts.

The Central Energy Team, Denver, in the USGS Energy Resources Program, provides assessments of energy resources (coal, oil, natural gas). Site links to world and national assessments, publications and products, and Methane Field Conference.

Entry to USGS Central Region programs with links to Biological Resources, Geology, National Mapping, Water Resources, Office of Central Region Services, emergency information, and records of a Rockies field trip, and clickable map to state programs.

Site for programs of the Central Region Mineral Resources Team with links to products, personnel, projects and programs of land stewardship, regional geochemistry, analytical chemistry, geology and resources assessment and remote sensing.

Summary of a circular on USGS environmental research and Chesapeake Bay with links to full document. Includes discussion of the problems of the estuary, restoration efforts, water quality, and effects on ecosystem.

National Strong-Motion Program home page with links to program news, recent events, and datasets of digitized accelerograms downloadable as PC (*.zip) and Unix (*.tar.z) files, data processing, stations, research, publications, and personnel.

Historical maps and animations of maps for monthly and annual streamflow conditions by water year showing generalized contour patterns of streamflow conditions. Maps are for the United States, Canada, and Puerto Rico.

The National Water Quality Laboratory (NWQL) is a full-service laboratory that specializes in environmental analytical chemistry and has a primary role to develop new analytical methods. Links to directory, publications, and standards.

Primary homepage for the National Water Quality Assessment (NAWQA) Program studying water quality in river, aquifer and coastal water basins throughout the nation. Links to reports, data, models, maps and national synthesis studies.

Photographs of landscapes, earth history, waterways, wildlife, changing worlds, and earth scientists. Requires Macromedia Shockwave Player plugin to view. Links to Popular products and List of USGS image collections.

The National Wildlife Health Center (NWHC) is a biomedical laboratory assessing the impact of disease on wildlife and identifying the role of various pathogens in wildlife losses. Site has links to news, programs, publications and metadata.

Homepage for the Northern Prairie Wildlife Research Center, Jamestown, ND, with links to announcements, science prgorams, biological resources finder, publications search option, contacts, and answers to common questions about the Center

Site for the Optical Science Laboratory specializing in expert calibration of aerial mapping cameras with links to fees, scheduling cameras for calibration, historical camera database files, USGS aerial camera specifications, and how to visit.

Description of the Denver Organic Geochemistry Laboratory where chemical and geological data is used to research the physical and chemical processes of hydrocarbon generation, migration and accumulation, with links to programs, personnel, and products.

The Organic Geochemistry Research Group of the Kansas District focuses on the fate and transport of organic contaminants in the environment with links to objectives, analytical methods, laboratory methods, publications, events, photos, and personnel.

Discusses how fossils can be grouped and studied by size, habitat type, and phylogenetic groups. Shows how fossil classification groups are used to solve geologic problems at the USGS.

Report on the captive breeding program at Patuxent Wildlife Research Center to help save endangered whooping cranes. Site links to natural history information on whooping cranes, why they are endangered, cool facts on cranes, and a photo gallery.

Search tool for locating lithologic and geochronologic unit names for geologic studies.

Site for Great Lakes Science Center, Ann Arbor, which provides information about biological resources in the Great Lakes Basin. Links to personnel, publications, data, library, facilities, research vessels, Great Lakes issues, and research.

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.

Site for a USGS project under the U.S. Global Change Research Program for a national assessment of the impacts of climate variability and change on resources with links to impacts in Alaska, western U.S., public lands, and water resources.

Access to USGS on-line geologic publications of the western United States categorized by state, region USGS series, geologic maps, and software with links to state geologic survey publications.

Description of the Geospatial Multi-Agency Coordination (GeoMAC) project, online maps of current wildland fire locations using Netscape Communicator or Microsoft Internet Explorer, and user guide on how to use mapping application.

Homepage about the Geology Discipline with links to what's new, publications, real-time hazards information, partnerships, fellowship program, and major science programs.

Overview of water-related scientific programs in Micronesia (Northern Marianas, Guam, and Palau) and American Samoa. Links to programs on hydrologic data collection, ground water availability, and surface runoff.

Search tool for locating print and online U.S. geologic maps by area, title, author, etc.

Describes how social scientists and natural resource managers work together to develop cooperation and public help in solving complex natural resource issues. Links to the use of public surveys in a project for black-tailed prairie dog management.

Describes the value of molecular biology genetic tools in enhancing the delineation of the genetic diversity and the effects of environmental degradation on living species. Links to research, which differentiated two species of sage-grouse.

Homepage for project on Bear Lake, Idaho-Utah, to study past climate change and effect on lake catchment basins. Includes link to summary, personnel, geology, methods used including coring and seismic surveying, and publications.

A national information resource for locating biogeographic accounts of non-indigenous aquatic species in the U.S. Provided are scientific reports, online/real-time queries, spatial data sets, regional contact lists, and general information.

Entry to biomonitoring projects studying the status and trends of the nation's environmental resources and programs studying amphibians and birds. Links to long-term programs, resources and references, and related links.

Links to ornithology programs at Patuxent Wildlife Research Center, Laurel, MD, including large scale survey analysis of bird populations, research tools, datasets and analyses, bird identification, and seasonal bird lists.

Description of the priority ecosystems studies initiative with links to projects in Chesapeake Bay, Greater Yellowstone, Mojave Desert, Platte River, Salton Sea, San Francisco, and south Florida.

Site for the Platte River Program in Nebraska an area that is a critical staging area for migratory waterbirds of the Central Flyway. Includes links to color-infrared aerial photos, 1938 historic aerial photos, and Cottonwood Ranch research site.

Site on the Chlorofluorocarbon Laboratory and its analytical services for CFCs, sulfur hexafluoride, dissolved gases including nitrogen, argon, methane, carbon dioxide, oxygen, and helium, and tritium/helium-3 dating.

Home page for the USGS Rocky Mountain Mapping Center in Denver, CO with mapping activities in the western U.S. and links to research activities, products, mapping liaisons, and education.

Brief description of the Western Fisheries Research Center in Seattle devoted to research on fish populations and aquatic ecosystems of the West. Links to research programs, laboratory locations, publications, and map services.

Detailed publication on the classification system for an inventory of wetlands and deepwater habitats of the United States used to describe ecological taxa and arrange them in a system useful to resource managers.

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.

San Francisco Bay Area Regional Database (BARD) for downloading or viewing Digital Elevation Models (DEMs), Digital Line Graphs (DLGs), Digital Raster Graphics (DRGs), and Digital Orthophotos images with standards, NSDI description, and metadata.

Portal of the South Florida Information Access (SOFIA) system providing multiple links to projects, products, information, and data for research, decision-making, and resource management of the South Florida ecosystem restoration effort.

Homepage for the Southern California Integrated GPS Network (SCIGN) Pasadena Field Office involved in operating GPS stations, data recording, and supplying of earthquake data. Links to GPS data analysis, photos, and technical information.

Homepage for ISGS Spatial Data Transfer Standard (SDTS) information with links to software, FTP site, standard, and data available on line, USGS mass conversion schedule, meetings, and related web sites.

Homepage describing The National Map, which will produce a seamless, continuously maintained set of public domain geographic base information, with links to map viewer, pilot projects, reports, fact sheets, and national atlas.

Links for the Tides and Inflows in the Mangroves of the Everglades (TIME) project on the effects of freshwater and tidal flows on the Everglades mangroves. With links to software & manuals, time data, photos, animations, and bibliography.

General information on topographic maps with links to topographic mapping, USGS topographic maps, digital raster graphics, how to find and order USGS maps, map revision, and map symbols.

Homepage for the Toxic Substances Hydrology Program, which provides scientific information on contaminated sites and on human and environmental health. Links to news, topical information, investigations, meetings, publications, and photos.

Summary of protocols describing procedures for laboratory analysis of algae samples collected by the U.S. Geological Survey's National Water Quality Assessment Program (NAWQA). Includes full document to be downloaded in PDF format.

Homepage for Upper Midwest Environmental Science Center, LaCrosse, Wisconsin, with links to data library, geographical search, science programs, partnerships, long-term resource monitoring program, reports and publications, and education.

Report giving operational guidelines that will lower the risk of coccidioidomycosis (Valley fever) for individuals who work outdoors in areas where the disease is endemic.

Searchable database, the COALQUAL database, presented here and in the USGS Open-file Report 97-134, is a subset of samples contained in the NCRDS (National Coal Resources Data System) database, and contains coal quality data on each sample.

Searchable database for locating information on coal resources by area, coalfield, coalbed, rank, quadrangle, source, years, or characteristics of thickness, overburden, and reliability.

Homepage for the Flagstaff Field center with links to space science, water and ice studies, earth sciences, biological resources, Grand Canyon Monitoring and Research Center, outreach & education, data and software, and images.

Site to obtain currently available geochemical reference materials, certificates for reference materials no longer available, reference materials in production, and order and processing information. Some documents in PDF format.

Site for the Volunteer Program at the Hawaiian Volcano Observatory (HVO) with information on how to become a volunteer, volunteer housing, examples of volunteer experiences, available volunteer projects, and about HVO.

Report with preliminary sea floor map displaying submarine rock exposures found along the northern part of Monterey Bay National Marine Sanctuary, extent based on side-scan sonar records, seismic-reflection records, and underwater video.

Information on vertebrate fossils and their use in paleontologic research in biostratigraphy, paleoclimatology, paleobiology, paleoecology, and earth history.

Selection of links to web sites dealing with paleontology and related disciplines including links to museums, academia, societies, surveys, and groups of fossils.

Bibliography of books, periodicals, fossil collecting guides, audiovisual aids, videos, filmstrips, charts, and posters which may be borrowed from libraries or purchased if still available.

Description of the seismic monitoring of the active Hawaiian volcanoes with information on the network, instrumentation, and recording stations with links to related information.

Homepage for a paleoseismic field study of the geologic record of prehistoric earthquakes in the Puget Lowland region to evaluate seismic hazards with links to an atlas and reports on historic earthquakes in the Washington and Oregon area.

Overview of the environmental monitoring component of the international program at the EROS Data Center using Geographic Information Systems (GIS) technology, with links to data, partners, publications, and workshops.

Site to download various geographic datasets with links to FTP file access, status maps, public domain software, and Spatial Data Transfer Standard (SDTS) information. These datasets are not directly viewable.

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.

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.

The Technology Enterprise Office provides a link between research teams within USGS and private sector individuals or organizations interested in access to USGS technology through patent licensing, CRADAs or other cooperative arrangements.

Overview of the Toxic Substances Hydrology Program role in investigating the occurrence and fate of agricultural chemicals with links to investigations, headlines, on-line fact sheets, new publications, bibliographies and photo gallery.

Home page for the Front Range Infrastructure Resources Project, a demonstration study of the northern Colorado Front Range urban corridor and the entire Rocky Mountain Front Range urban corridor with links to projects, datasets, and publications.

Overview of the Core Research Center (CRC) in Denver for preserving valuable rock cores for permanent storage and making the cores available for examination and testing. Includes links to services, well reports, and resources.

Website for the Columbia Environmental Research Center with links to staff, publications, databases, field stations, and projects including those on the Rio Grande, burrowing owls, sea turtles, and geospatial technology.

The Crater Lake Data Clearinghouse website is a gateway to information and data on Crater Lake with links to data downloads of bathymetry, maps and imagery, a fly-by movie, photos, and information on geology, maps, history, and biota.

Overview of the Long Valley Caldera with links to monitoring data including earthquakes and deformations, long-term outlook, volcano hazards in the area, USGS response plan, image gallery, monitoring and topical studies, publications and references.

Volunteer opportunities with U.S. Geological Survey research programs.

Links to research at the field stations of the Western Ecological Research Center with direct links to web pages for wildlife videos, satellite telemetry, fire ecology, invasive species, herpetology field guide, and coastal ecosystems.

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.

Description of what Digital Orthophoto Quadrangles are and how to obtain them plus information on the DOQ program, points of contact, DOQ status graphic, examples of DOQs, and free data viewer software.

Home page for the Western Region Energy Resources Program with links to Alaska petroleum studies project, coal, oil and gas, other energy sources, environment and human health, publications, energy links, and GEODE.

Web site for an Internet Map Service (IMS) serving base cartographic data, USGS data, science applications and real time modelling analyses for the Columbia River basin using geospatial analysis technology.

Home page for Coastal and Marine Geology with links to topics of interest (sea level change, erosion, corals, pollution, sonar mapping, and others), Sound Waves monthly newsletter, field centers, regions of interest, and subject search system.

Links to Western Region Geography Center for Science Policy, Earth Science Information Center, mapping status and maps sales, integrated science studies, National Atlas, Terraserver, DOQs and partnerships.

Site for Western Region Coastal and Marine Geology Program conducting scientific research in the coastal and offshore areas of California, Oregon, Washington, Alaska, Hawaii, and other U.S. Pacific Islands.

Home page for Northern California Earthquake Hazards Program with links to earthquake news, real-time earthquake and shaking maps, earthquake probabilities, latest earthquake information, hazards and preparedness, research and special features.

Western Mineral Resources home page with links to projects to assess the mineral resources and mineral related environmental problems of the western region of the United States. Also links to products, offices, facts, FAQs and newsletter.

Information on earthquakes in central and eastern United States with links to earthquake monitoring, published products, recent earthquake information, discussion group, and current projects.

Site with links to projects of the field center of the Woods Hole Coastal Marine Geology Program on underwater areas between shorelines and the deep ocean, off the U.S. East Coast, the Gulf of Mexico, and in parts of the Caribbean and Great Lakes.

Site for the Southern California Earthquake Hazards Program with links to latest quake information, real-time earthquake maps and shaking maps, general information, hazards and preparedness, research, networks, and earthquakes for kids.

Description of the World Data Center for Remotely Sensed Land Data (WDC/RSLD), the world's largest collection of space and aircraft imagery. Includes aerial photography, DOQs, Landsat satellite imagery and photography and AVHRR imagery.

Manual on dragonflies and damselflies (Odonata), with links to photo thumbnails, checklists, distribution maps, and other Odonata information.

Homepage for Earth Surface Processes Team with research studies in two general categories: climate change and geologic mapping. Links to research activities, available data sets, workshop, and programs.

Home page for Eastern Mineral Resources Team conducting research on the occurrence, quality, quantity, and availability of mineral resources. Links to products, descriptions of research projects, and staff.

Homepage of the Land Processes DAAC, which processes, archives, and distributes land-related data collected by Earth Observing System (EOS) sensors. Links to data products including ETM+ Landsat data, ASTER data, and MODIS land products.

Links to Energy Resources Program research on coal, oil & gas, other energy sources, environment & human health, publications, energy resource assessment, and Geo-Data Explorer (GEODE).

U.S. Geological Survey (USGS) Employment Website has the information needed to find a job with the USGS.

Access to products archived at the EROS Data Center, Sioux Falls, SD, including aerial photography, remote sensing data, satellite imagery, maps, and elevation data with product search retrieval and ordering information.

Home page of the Forest and Rangeland Ecosystem Science Center, Corvallis, providing research and technical support for ecosystem management in the western U.S. Links to projects, field stations, fact sheets, partnerships, and publications.

Home page of the Gap Analysis Program (GAP) providing assessments of the conservation status of native vertebrate species and natural land cover types of the U.S. Links to projects, applications, status maps, and a searchable database.

Use Geo-Data Explorer (GEODE) to access, view, and download information from geospatial databases. Includes choice of the use of HTML client or Java client.

The Geographic Names Information System (GNIS) contains information about almost 2 million physical and cultural geographic features in the United States.

Links to information on laboratory and field scientific techniques and equipment used and maintained for geologic research in the USGS. Site is incomplete and information is not available for some of the links.

Research program designed to improve understanding of the causes of ground failure so that the hazards associated with landslides can be mitigated or avoided.

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, epiphytes, and field trips.

Homepage for programs of the Center for Coastal Geology on hurricanes and extreme storms with links to technology, related aerial photography, hurricanes, El Nino, northeasters, and specific storms.

Overview of the Surface-Water Data & Analysis Section of the Missouri District with links to real-time and historic water data, staff members, and projects on bridge scour and gaging station network.

This report consists of materials prepared for a GIS spatial analysis course intended for instructors preparing spatial-modeling training and scientists with advanced GIS expertise. Downloads available in many formats (PDF, ArcView, Word, etc.)

List of federal, state, tribal, and local agencies cooperating with the USGS on water resources studies of Montana.

Information on objectives, approach, status, and publications of various research projects investigating water resources in Montana including studies on wetlands, bridge scour, reconstructed wetlands, abandoned mine lands, and others.

Links to description, publications, data, and maps for research projects on North Carolina water resources.

Links to information on the formation and structure of Chesapeake Bay including online reports, recent field work, field work archives, cooperating agencies, bibliography, and links to articles about other terrestrial impact craters.

Report prepared with NASA on the importance of a historical context for understanding ongoing changes in land cover and land use in North America and the effect on the environment. Site contains primarily contents of a book edited by T.D. Sisk.

Links to descriptions, maps, photos, and reports of projects related to studies of the effects of dams and flow regulation in watersheds altered by humans in the state of Michigan including Muskegon and Kalamazoo Rivers and the Seney refuge.

Links to descriptions, publications, and photos of research projects in Michigan related to drinking water including source assessment, ground water availability, water resources, and contaminants in water.

USGS water resources home page for Michigan with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, weather, water management, droughts, floods, and water quality.

Information for students and teacher or for anyone curious about natural science. Includes project ideas, homework help, lesson plans, careers, and fun activities.

Home page for the Land Remote Sensing Satellite Program (Landsat) used to gather information about land surface features of the earth. Includes images, links to general and technical information, ordering of data, and partners.

Florida Integrated Science Center at Gainesville is the Center for Aquatic Resource Studies in Florida and southeastern United States. Site has links to projects on manatees, contaminants, invasive plants and animals, Everglades, and aquatic resources.

Links to overview, major programs, products and publications on coal, oil & gas, environment & human health, and resource economics, and special applications (Geo-Data Explorer (GEODE) and Kidzone)

Links to project descriptions and publications for research studies of water availability in Michigan.

The Great and Little Miami River Basins form a National Water Quality Assessment (NAWQA) Program study unit for studying the status, trends, and changes affecting the nation's water quality. Site links to data, publications, maps, and results.

Website with links to USGS hydrologic, geohydrologic, soil, and geologic projects in Missouri using geographic information systems (GIS) technology with digital datasets of images, models, and maps produced by the projects to view.

Links to the web pages of federal, state, regional and local agencies and university cooperating with the USGS in the collection of water-resources data and the conduct of interpretive hydrologic investigations in Missouri.

Links to USGS research project summaries and publications on water resources in Missouri.

Links to descriptions of research projects on water resources in Minnesota listed by project number.

Links by geographic area in North Dakota or by gaging station number to hydrographs, downloadable data, and site description of streamflow stations.

Brief descriptions of categories of USGS research programs and projects on water resources in Michigan with links to more detailed information on projects.

Map of New Jersey showing the locations of all well sites where ground water-quality data exists in the USGS National Water Information System (NWIS) database.

The Puget Sound Basin is a National Water Quality Assessment (NAWQA) Program study unit for studying the status, trends, and changes affecting the nation's water quality. Site links to data, publications, and results.

List of federal, state, regional, city and county agencies that cooperate with the USGS in water resources studies in Texas. Most have links to the agency's own website.

Studies by the USGS documenting the extent of surface-water and ground water degradation associated with coal mining in Pennsylvania and the effects of mining and reclamation practices. Includes map of mine sites.

Links to maps of New Jersey showing nitrate levels, pesticides, Total Volatile Organic Compounds (VOCs), and radium in wells and land use of the 1970s.

Information on aquifers in upstate New York which consist of unconsolidated deposits of sand and gravel that occupy major river and stream valleys or lake plains. Links to aquifer maps at scales 1:24,000 or 1:250,000 and cooperative publications.

Site to locate most recent or archive reports for end-of-the-month hydrologic conditions with descriptions, data, charts, and maps giving an overview of water conditions during the month for the state of New York.

Paper from Forum on Wildlife Telemetry, Snowmass Village, CO, 1997, describes technique for implanting radio-transmitters for tracking amphibians such as frogs with telemetry.

Papers from Forum on Wildlife Telemetry, Snowmass Village, CO, 1997 about innovations in transmitting and receiving systems, attachment techniques, collection of data using telemetry, data processing and analysis. Available as *.zip file to download.

Identification manual with colored photos of species of puddle ducks, diving ducks, geese, mergansers, swans, cranes, herons, egrets, pelicans and cormorants. Also includes information on ordering print copy and downloading as *.zip file.

Retrieval system to locate websites on publications and compilations on biological resources. Searches can be made by type, such as checklists, distribution, and regional overviews, by taxon, and by geography, including global, U.S., and Canada.

Chapter of Field Manual of Wildlife Diseases on miscellaneous fungi with information on fungal skin and subcutaneous lesions or mycosis primarily in birds.

Chapter of Field Manual of Wildlife Diseases on algal toxins, red tide toxins, phycotoxins, dinoflagellates, cyanobacterium, and bird mortality due to algal toxicosis.

Home page for National Wetlands Research Center's (NWRC) Spatial Analysis Branch (SAB), which uses state-of-the-art technology to assist the work of natural resource managers with spatial data and computerized analysis techniques.

Briefly describes research efforts to better understand nutrient dynamics and biogeochemical cycling in ecosystems and how these properties are altered by large-scale human activities.

Information on the NWRC Wetlands Ecology Branch, which conducts research related to sustainable management and restoration of the nation's coastal saltwater wetlands, freshwater wetlands, submerged aquatic ecosystems, and coastal prairie.

Coverage of the Coastal Prairie Ecology Research (CPER) Team, National Wetlands Research Center, providing scientific information to aid the conservation, management, and restoration of ecosystems in the greater coastal prairie region.

Links to bird banding manual, banding associations, equipment and suppliers, bibliography, band size lookup, recapture database, bander services, aging and sexing birds, longevity records, Canadian atlas of bird banding and other resources.

Article on experiment to teach migration routes to birds using ultralight aircraft as a means to reintroduce a migratory flock of whooping cranes to the eastern United States.

List and brief abstracts on research projects on invasive species, the ecology of introduced species, and developing management strategies at Patuxent Wildlife Research Center.

List and brief abstracts on projects at Patuxent Wildlife Research Center researching wetland ecology and ecosystem management in Eastern United States.

Descriptions of projects and resources on wildlife population ecology at the Patuxent Wildlife Research Center with links to research activities, long-term programs, and resources and references.

Explanation of decision support systems, ongoing studies, and Biological Resources DSS activities.

Amphibian population declines and deformities due to various causes including land use change, viruses, and fungi. Links to USGS press releases, answers to FAQs (HTML and PDF versions) and photos with downloadable files.

Report on problems in preserving coral reef ecosystems with links to information on the interagency U.S. Coral Reef Task Force, press releases, reports, and NOAA coral reef sites.

Contact information at all hours for the news media either at regional centers or headquarters, with links to news releases, news leaders, photos, videos, and background material.

News and related information focusing on the hazards associated with hurricanes in the United States.

Articles from the July/August issue of People, Land & Water, the employee news magazine of the Dept. of the Interior, on lost natural resources, loss of biodiversity, and damage to our biological heritage by invasive plants, animals, and microbes.

Fact sheet on mercury and the environment, including toxic effects, risk to people and wildlife, sources of mercury, environments where methylmercury is a problem, and mercury contamination.

The USGS has identified the theme Natural Resources to show how USGS earth science information contributes to public policy issues. This site links to USGS fact sheets on natural resource programs in energy, minerals, water, land, and biota.

Electronic version of the USGS Manual containing the core chapters of USGS policies and procedures, a table of contents, an index, a checklist, handbooks and current Instructional Memoranda, which are interim policies.

Study of wildland fire history and fire ecology such as plants in the Sierra Nevada forests, California shrublands, the Mojave, and Sonoran deserts to develop management techniques that will reduce hazards.

Links to research projects that will improve the ability to detect, monitor, and predict the effects of invasive species, including exotic animals, on native ecosystems of the Pacific Southwest (California, Nevada, Utah, and Arizona).

Method of tracking pintail ducks by capturing with rocket nets or swim-in traps and attaching telemetry devices that allow satellite tracking. Includes video of rocket nets.

One of many map layers of the National Atlas giving county boundaries with metadata. The county boundaries map layer can be downloaded in shapefile or SDTS formats.

Current river mechanics research on particle friction angles of fluvial gravels (data files compressed in BenHex, Winzip and Unix) and Grand Canyon Beach evolution (animation requiring Java 1.0) plus digital elevation files (*.hgx and *.zip files).

Article from Status and Trends of the Nation's Biological Resources on the serious impacts to river systems due to damming and flow regulation, and rehabilitation, monitoring, and research on such rivers.

Links to reports of aquatic ecosystems research at the Western Fisheries Research Center (WFRC) emphasizing the understanding of ecological processes for aquatic systems, including river basins, riparian areas, wetlands, and estuaries.

Document on the federally supported interagency National Acid Precipitation Assessment Program (NAPAP) covering research on causes and effects of acid precipitation with the USGS as the lead agency for monitoring wet acid deposition.

Fact sheet on the formation of acid rain, its effects, investigations, and the program of a nationwide network of acid rain monitoring stations called the National Atmospheric Deposition Program/National Trends Network (NADP/NTN).

Links to general information on water supply by aquifers based on rock types and to principal national aquifers by name.

Information on video and still photography used to supplement laser altimetry measurements of the coast. The photography is used for recognizing geomorphic and cultural features impacted by storms. Links to photo collections of hurricanes and El Nino.

Description of three types of severe coastal storm impacts: hurricane impacts on the southeast U.S., extra-tropical storm impacts on the U.S. west coast during El-Nino winters, and 'northeaster' impacts on the U.S. east coast.

Links to remote video monitoring field stations with video and water level data, plus links to image processing software tools, processed video examples, and other uses of video descriptions.

Links to products of magnetic, gravity, magnetotelluric, and multi-discipline reports and surveys of regions in the U.S. and Antarctica plus geophysical software tools. Some products are in PDF format.

Links to web sites, publications, and fact sheets on earthquake preparedness.

National seismic hazards maps, global seismic hazards map, predictive intensity maps, shaking hazards maps and probabilities for California, and a variety of fact sheets on earthquakes.

Constructed farm ponds represent significant breeding, rearing, and overwintering habitat for amphibians in the Driftless Area Ecoregion of Minnesota, Wisconsin, and Iowa. Links to fact sheet, brochure, annual reports, field manual, and final report.

Geographical access to multiple bird checklists developed by others that indicate the seasonal occurrence of birds in a given area. A Record Documentation Form to document supporting details of rare bird observations is also available.

Description of the National Aerial Photography Program (NAPP) designed to cover all the lower 48 States every 5 to 7 years with a new set of aerial photographs.

Near real-time list of earthquakes recently occurring anywhere in the world.

List of links to electronic USGS products and publications and/or information on obtaining products in paper or other formats arranged by discipline, media type, and online products, and links to USGS libraries.

Links to volcanism, volcanic history, volcanic rocks, and general geology by state, by region, national parks and national monuments and a brief introduction to volcanism around the U.S. entitled: Windows into the past.

Links to explanations of volcanic hazards and features and to a glossary of volcano terminology.

Educational volcano site providing answers to frequently asked volcano questions with links to other general information on volcanoes and to information on specific volcanoes including the Cascade Range volcanoes.

Home page for USGS research on the relationship of environment and health with links to fact sheets, reports, projects and programs, Human Health database and meeting and conferences.

Technical water resources memoranda arranged by general subject (ground water, surface water, policy and safety, and publishing) or by organizational unit (National Water Quality Lab, Branch of Quality Systems, and Branch of Systems Analysis).

Links to reports for Pennsylvania on borehole geophysical studies, aquifer tests and properties, modeling, and hydrologic effects of an earthquake with links to MOC3D solute transport software package, program mission, and bibliography.

Overview of microbiology projects related to water quality investigating bacteria, viral and protozoan pathogens and indicators in the environment with links to publications, analytical and field methods, laboratory, and current projects.

Information on the Gap Analysis Program in Ohio, a geographic approach to planning for biological diversity by mapping native aquatic and terrestrial animal species and natural communities on present-day conservation lands.

Dictionary of terms associated with water use from the publication: Estimated Use of water in the United States in 1990.

Dictionary of terms associated with glaciology with brief definitions.

Preliminary report comparing various geologic time scales. Text is HTML or plain text format, and colored compilation chart in Excel format.

Geographical isolation of the Hawaiian Islands has resulted in the evolution of endemic species unique in the world. Research at the Center aims at preventing the further extinction of these species. Links to projects, publications and other data.

Booklet giving general explanations of geologic time, major divisions of geologic time, relative and radiometric time scales, index fossils, and the age of the earth.

Booklet describes how paleontologists use the identification of fossils to recognize rocks of the same or different ages.

Graphical representation of the Content Standard for Digital Geospatial Metadata Version 2 - 1998 (FGDC-STD-001 June 1998) to permit easier location of relevant information while writing metadata.

Description and photos documenting offsets and 260 km rupture in the Denali glacier in central Alaska after the November 3, 2002 earthquake, the 9th largest earthquake in the United States in the last 200 years.

Description of the Visitors Center at the USGS National Center in Reston, Virginia, with information for the public on tour times, guided tours, self-guiding tours, interesting facts, Earth Quiz and directions to Center.

Map showing which states are positive for West Nile Virus. Clicking on state outline links to state West Nile Virus or public health website. Site also has links to other West Nile Virus maps.

Site describes studies using flow visualization and rock matrix pressure measurements to study flow through fractures in the unsaturated zone, which plays an important role in water infiltration and contaminant transport.

Overview of research to measure, predict, and understand the flow of water through soil and rock between the land surface and the water table with links to field sites, laboratory methods, theoretical developments, publications, and personnel.

Dictionary of terms associated with paleontology with brief definitions.

Chart of the geologic time scale with references.

Site for elementary school students on runoff with links to information on rivers and watersheds, plus random link and glossary.

The Geospatial Data Clearinghouse is a collection of over 250 spatial data servers, with digital geographic data for use in Geographic Information Systems (GIS), image processing systems, and other modeling software. Searchable by metadata.

Site for elementary school studies on land subsidence with links to land subsidence in California, wells, ground water quality, sinkholes, glossary, and a random link.

Provides an easy way to find and order aerial photographs from the National Aerial Photography Program (NAPP), an interagency Federal effort coordinated by the USGS, which uses NAPP products to revise maps.

Integrated Software for Imagery and Spectrometers (ISIS) is a comprehensive, user-friendly, portable tool for processing, analyzing, and displaying remotely sensed image data. Homepage provides documentation, acquisition, user feedback, and FAQs.

Primary homepage for the Astrogeology Research Program with links to solar system, space missions, technology, data & information, research programs for geology, remote sensing, and ice & polar, hot topics, photo gallery, and Astro Kids.

Links to water resources data customers of the Nevada District includes federal, state, and regional agencies and Indian tribes.

Collecting water-resources data and conducting interpretive hydrologic investigations are accomplished in cooperation with local, tribal, State, and Federal agencies. Links are to agencies cooperating with the New Mexico District.

Links to webpages of federal, state, local & municipality agencies and Nebraska Natural Resource Districts that are cooperators with the Nebraska District in the collection of water resources data. Plus contacts for other related agencies.

Fact sheet (also available in PDF format) on the ongoing partnership in water resources between the USGS and non-Federal agencies primarily state, tribal, county and municipal agencies with water-resources responsibilities.

Links to web sites of cooperators coordinating with the USGS South Dakota District in the collection of water resources data includes federal, state, tribal and local agencies.

Links to web pages of state, local, and federal agencies supporting water-resources investigations in cooperation with the USGS in Ohio.

List of cooperating agencies and institutions that partner with the USGS in studies related to water resources and hydrology in Oklahoma.

Links to New Jersey ground-water data including hydrogeology with a geologic map and description of major aquifers, water levels including real-time data and drought levels, and water-quality information.

Links to detailed descriptions of USGS water-related research projects in Nevada with project information, location maps, and bibliographies including online reports.

In 1931, the USGS established a statewide network of wells in Pennsylvania to monitor water-level fluctuations. This network consists of 68 wells to monitor ground water conditions during droughts. Links to ground-water data, hydrographs, and levels.

NWISWeb homepage for the National Water Information System providing access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, and Puerto Rico.

Pennsylvania digital data for watershed boundaries, county geology, and flood mapping in Arc/Info format compressed with gzip utility for downloading plus links to other sources of data.

Links to water data for New Jersey including streamflow, sampling stations, and water-quality data with links to reports on stream gages, hydrology, networks, and floods.

Brief summaries of USGS projects in Texas including water quality monitoring, digital mapping, energy resources, U.S.-Mexico border mapping, fish and wildlife health, Kemp's Ridley sea turtle, and conditions affecting water quality.

Enables searching by state, hydrologic region, basin, time period, and length of record to retrieve suspended sediment data for the United States.

Plots of streamflow averages and ground water depths for selected hydrologic sites in Pennsylvania.

Links to stations in Puerto Rico for real-time information on water levels for reservoirs.

Links to water data studies for river and lake basins in Oregon including ground water and water quality studies.

Links to summaries of USGS studies and research on water resources in the state of New York arranged by project number.

Summary of USGS research programs in South Carolina including studies on gold and other mineral resources, digital mapping, water quality, geologic mapping, hydrology, saltwater encroachment, bioremediation, flooding, and earthquakes.

Description of Digital Line Graphs (DLG) with explanations of layers and feature types, scales, available products, media, prices, and links to search and order webpages.

Coverage, characteristics, and availability of AVHRR data from a broad-band scanner sensing in the visible, near-infrared, and thermal infrared portions of the electromagnetic spectrum.

Information for ordering from a large diverse group of aerial photos (1939 to the present) from film received from many federal agencies such as Bureau of Indian Affairs, Bureau of Land Management, Army, Navy, National Park Service and others.

Ordering and descriptive information for National Aeronautics and Space Administration (NASA) imagery acquired by the USGS from Gemini, Apollo, Skylab, International Space Station, Space Shuttle, and Shuttle Large Format Camera missions.

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.

Site to learn about, view, and order digital image vegetation condition (greenness) maps of the conterminous U.S. based on the Normalized Difference Vegetation Index (NDVI) with imagery from Advanced High Resolution Radiometer (AVHRR).

Enables locating and ordering aerial photography produced under the National Aerial Photography Program (NAPP)from the EROS data center with links to product description, prices, search & order, custom enlargements and certification.

Brief description of vertebrates and use of their fossil bones and footprints to aid in dating strata in biostratigraphy and to decipher past climates and recreate ancient ecosystems in paleoecology, paleoclimatology and paleobiogeography.

Description of the technique used in particle-size analysis

Links to general interest publications, special references, and other sources for fossil and fossil collecting information.

Contacts and other sources of information for teachers, students, and others interested in paleontology with links to related USGS websites and on-line publications.

Information on mollusks and uses of the identification of fossil mollusks in the fields of biostratigraphy, geochronology, paleocoeanography, paleoecology and ecosystems history. Links to experts and related USGS projects.

Online world map with booklet (PDF format) giving an account of plate tectonics, volcanology, earthquake activity, and impact craters.

Links to charts of the Earth's magnetic field in different projections showing declination, inclination, and total, horizontal and vertical intensities plus references and note on limitations.

Description of datasets of AVHRR data available from the EROS Data Center in Sioux Falls, SD in three formats: High Resolution Picture Transmission (HRPT), Local Area Coverage (LAC), and Global Area Coverage (GAC).

USGS Archive for preservation and access for satellite remote sensing data and imagery (Landsat and AVHRR). Links to locating and ordering imagery, international collaborators, advisory committee, and Earthshots (satellite photos.).

Description of magnetic models with link to on-line calculation, freeware calculator (DOS and Windows), descriptions of model types, and references.

Describes cooperation of the USGS office in Las Vegas, Nevada, with the Department of Energy to address environmental and scientific issues at the Nevada Test Site and vicinity with links to project information.

USGS water resources home page for Ohio with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, weather, water use, and water quality, plus district and publications information.

Report on recent USGS programs in Ohio related to water resources studies, with program highlights, flood and drought studies, ground water studies, microbiological water quality research, stream data, and recent publications.

Online annual reports (since 1999) documenting hydrologic data for Pennsylvania gathered from USGS surface water and ground water data-collection networks and information on ordering paper copies of previous years.

Branch of Quality Systems monitors the consistent collection and reporting of water-quality data with documentation of field and laboratory methods and proficiency testing. Links to standard reference samples and quality assurance standards.

The USGS reviews and prepares technical comments on environmental impact statements and establishes policies to implement the National Environmental Policy Act (NEPA). Site has links to environmental laws and regulations including NEPA.

Overview of research of the Ecology Branch on the ecological consequences of habitat degradation due to altered environment, nonindigenous species, and atmospheric alterations. Includes links to staff and research projects.

Links to pictures, songs and identification of birds of the United States, Canada, and Central America plus seasonal bird maps and a quiz on birds.

Links to maps of breeding distributions of bird species on grasslands and shrublands in the northern Great Plains. Maps can also be downloaded from *.zip files in HTML format.

Links to grassland bird species with detailed descriptions and bibliographic database in *.zip files to download in ProCite 5, Rich Text Format or ASCII formats.

Trapping education manual for the beginning or inexperienced trapper intended to provide information on North Dakota's predators and furbearing animals and the basics on how to trap them using good trapping skills and sound fur management.

Description of technique and equipment for high-performance liquid chromatography (HPLC) used to identify organic compounds in chemical analysis.

Photographs of examples of landslides viewable online as 100-200kb or 800 x 600kb images.

Description of method of capturing and tagging manatees in western Florida for tracking by satellite telemetry. Presented at a forum on telemetry.

Links to science programs on upper Midwest river inventory and monitoring with links to databases on macroinvertebrates, fisheries, vegetation, water quality, bathymetry, floodplain forest, wildlife, sediment, contaminants and nutrients.

Project summary, photos of logging truck, and bibliographies on log interpretation techniques and instrumentation to record geophysical data in wells and test holes for studying ground water hydraulics and evaluate waste disposal sites.

Online report for an interactive workshop Impact of Climate Change and Land Use in the Southwestern United States. Discusses land subsidence due to increased ground water pumping in the Southwest and the damage caused by subsidence.

Online report for an interactive workshop Impact of Climate Change and Land Use in the Southwestern United States. Gives a review of domestic and agricultural water use in the Southwest with graphs and maps.

Description of the methods of geochronology used to estimate the dating of rocks and sediments with links to technique, equipment and contacts for a variety of methods.

Use of diatoms in biostratigraphy, coastal and estuarine studies, paleoceanology, paleoliminology, earthquake studies, environmental quality and forensic studies. Includes listing of USGS diatom projects and links to other diatom websites.

Overview of chemical analyses, tracer studies, gas geochemistry, stable isotopes analyses, organic chemistry, and thermometry capabilities at major USGS laboratories with links to technique, equipment, and contacts for each procedure.

Links to laboratory capabilities within the USGS for paleomagnetism and paleomagnetic and rock magnetic procedures for dating and determination of magnetic direction and polarity in samples with links to techniques, equipment, and contacts.

Brief description of the coring system and crew used to obtain cores for geological research in the Eastern Region as one of the specialized capabilities of USGS teams.

Links to USGS capabilities in paleontological analyses of fossils such as mollusks, diatoms, palynomorphs, ostracodes, calcareous nannofossils, etc. Includes descriptive information, technique, equipment, and contacts for each fossil group.

Description of the use of Place Keyword Assistant, a software tool, for tagging metadata with geographic names from standardized lists or controlled vocabularies. Includes instructions on use and downloading software files.

Central site providing links to USGS databases and homepages providing significant data and information on research related to human health.

The U.S. Geological Survey (USGS) offers diverse employment opportunities for students in biology, hydrology, computer science, cartography, geology, and other fields. Site provides links to student programs and how to apply.

Describes the USGS Urban Dynamics Research Program that studies landscape changes resulting from the growth of metropolitan regions over time.

National Landslide Information Center links to general information, teacher/student information, recent landslide events, state and local information, current projects, fire-related landslides, and images and publications on landslides.

Description of the The National Map project intended to provide a seamless, integrated, and continuously maintained set of geographic base information for easily accessible, up-to-date, accurate mapping of the United States.

Information on researching and locating historical maps with reference to basic references and collections of the National Archives, Library of Congress, and the U.S. Geological Survey. Includes instructions for ordering copies of historic USGS maps.

Information on national map accuracy standards and how the USGS maintains accuracy.

Access to national water resources real-time data typically recorded at 15-60 minute intervals, stored onsite, and then transmitted to USGS offices every 4 hours. Select for site information, ground water, surface water, and water quality.

USGS responses to and studies of the hazards and impact of major hurricanes, tsunamis, and El Nino storms. Includes links to oblique aerial photography and LIDAR surveys recording coastal changes and other effects of storms and waves.

Brief information for students on glaciers and icecaps from Water Science for Schools with link to more glacial information by the National Snow and Ice Data Center (NSIDC).

Article in the May 28, 1998 issue of Volcano Watch describing of correlation of earth tides to volcanic eruptions and value in monitoring underground magma movement with deformation measurement instruments including tiltmeters and strainmeters.

Article on ozone layer and ozone as a pollutant from the weekly newsletter Volcano Watch (Hawaiian Volcano Observatory) for August 20, 2001.

Colored geomagnetic and gravity maps and related data and graphical plots for the state of Washington.

Map of Pleistocene pluvial lakes in the western Great Basin (Nevada, eastern California, southern Oregon). Includes metadata, online PDF map view, and downloadable ArcInfo export files, ArcView shapefiles, and TIFF files.

Links to online data retrieval, information on MTBE and gasoline oxygenates, VOCs analysis, VOC publications, news features, and featured online publications.

National Water Information System (NWIS) real-time data on selected ground water sites, ground water level data, site inventory of wells, test holes, drains, springs and excavations and ground water-quality data for the United States.

Links to background information on glaciers, glacier hazards, ice sheets and glaciations, glacial lakes, specific glaciers, terminology, bibliographies, and related useful links.

Visual monitoring of volcanoes by closed-circuit television and video monitoring for a permanent video record of events using slow-scan television which permits continuous surveillance at a distance for remote volcanoes or in times of danger.

Real-time and historic data from gaging stations for water and mudflow detection in the Mount St. Helens, WA vicinity with data tables and plots, interactive location map and station descriptions.

Guide to identification, selection, and management of grassland habitats in Wisconsin to conserve the populations of grassland birds. Includes glossary, references, bird lists, graphs, and maps.

Summary of part of the USGS interdivisional Mississippi Basin Carbon project that will study the changes in climate and the environment through carbon cycle changes recorded in lake sediments in the Upper Mississippi River Basin.

Describes the Conte Anadromous Fish Laboratory of the Leetown Science Center, which performs research directed towards restoration and protection of anadromous fish with lists of research projects and facilities.

An "image map" periodic table and short notes about many isotopes and their applications to illustrate the uses of assorted isotopes in hydrology, geology, and biology.

This study reconstructs past interactions among ecosystem factors, native species, and human land use in the Greater Yellowstone ecosystem to provide a context for future management to sustain both ecological and human communities.

This report is major publication on national biological resources that compiles and presents status and trends information for use by resource managers and the public. Presents detail information on ecosystems, plants, and animals.

Paper on the accelerated erosion of the Rio Puerco, a tributary of the Rio Grande in New Mexico, which has deepened and widened its channel, or arroyo, since the settlement of the region.

Airborne scanning laser surveys (LIDAR) are used to obtaining data to investigate the magnitude and causes of coastal changes that occur during severe storms. Links to examples of coastal mapping during specific hurricanes.

Dictionary of terms associated with earthquakes with simple definitions and photographs especially suited for students.

The North American Landscape Characterization (NALC) project is a cooperative effort between the U.S. Environmental Protection Agency (EPA), the USGS, and NASA to make Landsat satellite data available to the widest possible user community.

Description of Long Island Sound projects and links to research topics, data, publications, photos, and technology on sediment transport, sea floor mapping, contaminant sampling, sediment texture, and environmental issues.

Describes and provides links to USGS research in the location of the estuary and coast of Long Island, New York, to map the sea floor and to study sediment transport, contaminants, and sand resources and coastal vulnerability.

Fly-by and circulation movies, effluent concentration, tidal flushing, sea level, and temperature in Massachusetts Bay and Boston Harbor

Posters on the distribution and control of nonindigenous species introduced into southern Florida.

Homepage to access a large number of photograph collections on many subjects including national parks, ecosystems, plants and animals, and geologic features.

Integrated shipboard data collection, processing, and archival system for digital sidescan sonar and seismic data used in mapping the inner continental shelf.

Project is designed to integrate studies from a number of researchers compiling data from terrestrial, marine, and freshwater ecosystems within south Florida. Links to publications, maps, posters, and data of studies.

The Sediment Transport Instrumentation Facility at USGS Woods Hole Field Center maintains and deploys oceanographic instrumentation for the study of coastal and ocean circulation and sediment transport.

Interactive maps of the continental shelf of the Monterey Bay National Marine Sanctuary with GIS layers for sediment data, bathymetry, geology, bathymetry, sonar imagery, and tectonics.

Discussions and posters about agriculture, ecology, hydrology, ecosystems, and resource management efforts in south Florida.

Provides links to the data, models and maps on the biology, ecology, geology, mapping, hydrology, and chemistry of research studies in southern Florida.

Interactive map of the U.S. Pacific West Coast with data layers of Gloria sidescan data, multibeam backscatter and shaded relief imagery.

Interactive map of the Gulf of Mexico coast reflecting shoreline changes.

Louisiana continental slope interactive map with GIS datasets and sonar imagery.

Project of the Gulf of Mexico Integrated Science program that evaluates the transport and sedimentation of contaminates through the Mississippi River and Atchafalaya River delta to the near-shore Gulf of Mexico. Includes aerial photographs.

Gulf of Maine regional overview interactive map depicting research activities of the U.S. Geological Survey showing surficial sample sites, bathymetry, continental margin and coastal areas.

Long Island Sound interactive map with GIS datasets and sonar imagery.

Atlantic East Coast interactive map with GIS datasets and sonar imagery.

GLORIA is a digital sidescan sonar capable of producing digital image maps of the sea floor from reflected sound waves. Site includes description of digital processing, mosaicking, and links to samples of image maps.

Mississippi River alluvial fan interactive map with GIS data and imagery depicting core sites, depositional and channel interpretation, Gloria and SeaMarc datasets.

West central Florida erosion interactive map with GIS datasets to download including geologic interpretative layers, samples, bathymetry, and imagery.

Site for elementary school students on the water cycle with a link to a version geared for second grade students and a random link.

Educational site for elementary school students on the distribution of water, water supply and water use.

Educational site for elementary school students that tells the story of where, how much, and in what forms water exists on Earth.

Educational site on water for elementary school students with questions and answers that are meant to be useful and entertaining.

Educational site for elementary schools students on ground water sources, ground water flow, and aquifers.

Educational site for elementary school students on water use in the United States.

Educational site for elementary school students with information on surface water (rivers, streams, lakes, floods).

Educational site for elementary school students on water quality with links to related topics including pesticides in ground water, kid's view, urbanization and water and others.

Homepage of an educational site for elementary school students with links to water subjects including water basics, water questions and answers, water use, picture gallery, glossary, NavGuide, and certificate of completion.

Educational site for elementary school students on the properties of water with links to a true/false quiz, common water measurements, pH, and water facts.

Educational site for elementary school students with questions to challenge students plus links to opinion surveys, questionnaires, and water facts.

Sampling program to determine if pesticides are present in ground water, in accordance with Wyoming's Generic State Management Plan for Pesticides in Ground Water (SMP).

Access to surface water data and ground-water data for Wyoming.

Database entry page to search keywords and product type (document, map, data, metadata, photos, video, animation, aerial photo) for information on the Tampa Bay estuary and related research studies.

Bibliography of USGS publications on Wyoming water resources arranged by major areas and by reports series. Bibliography also available in PDF format.

Links to streamflow, surface and ground water, and water-quality data in real-time and for historic time periods for Wyoming.

News releases from Wyoming District on Wyoming water conditions.

Gives map of streamflow conditions in Wyoming with access to streamflow data, real-time, daily and historic, plus information on drought analysis and management.

USGS water resources home page for Wyoming with links to detailed hydrologic studies and long-term and real-time data on streamflow, ground and surface water, droughts, and water quality plus district and publications information.

Interactive Mapping Service (IMS) is an Internet based Geographic Information System designed to provide users with online mapping capability of habitats, land use and land cover, and seagrass for areas of Tampa Bay.

Identification of epiphytes (plants obtaining moisture and nutrients from the air and rain and usually living on another plant) on seaweed in Tampa Bay, Florida. Abstract of symposium presentation with photos.

Access to PDF files of annual water data for Wyoming for surface water and ground water 2000 to present.

USGS mapping sciences page containing links describing cartographic and geographic products and programs. The information products are available in printed and digital formats.

Information on USGS studies of Chesapeake Bay, the nation's largest estuary, concerned with water quality, ecosystem history and change, vital habitat and biological resources, and land use studies.

Description of the Antarctic Resources Center and links to its workshops and archives of Antarctic maps, charts, satellite images, and photographs produced by the member nations of the Scientific Committee on Antarctic Research (SCAR).

Links to reports, partners, principal investigators, maps, aerial photos, and contacts for the Galveston Bay Wetland Inventory Project.

Programs, projects, laboratories, and publications related to geographic information science in the eastern United States

A white paper describing a plan for USGS research in Gulf of Mexico estuaries, developed in 2001 using Tampa Bay as an example with links to program strategy and design.

Overview of interdisciplinary research on the Tampa Bay estuary of the Gulf of Mexico with links to digital library, interactive mapping, reports, posters, water chemistry maps, meetings and conferences, scientist directory, and field trips.

The Restoration Technologies Branch (RT) responds to client needs for bioengineering research/technical assistance in reducing pollution. Current projects are on hydropower generation, control of exotic species, and acid mine drainage.

The Fish Health Branch, Leetown Science Center, investigates fish health and disease issues associated with genetics, pathogens and environmental stress. With links to workshops, leaflets, and announcements relating for fish health.

Links to information and data on current research projects in fish health and aquatic ecology at the Center.

Description of scientific focus and research at the Northern Appalachian Field Lab on mining land use impacts and mediation, aquatic ecology, effects of dam removal, and invasive plant and animal species.

Programs of the Aquatic Ecology Branch on landscape ecology and GIS, molecular genetics, environmental contaminants, stream ecology, and other aspects of aquatic ecology in eastern United States.

Links to Leetown Science Center (LSC) fact sheets on fish, fish diseases, aquatic resources, and other projects and activities.

Geochemical, geological, geophysical, mineral, and general reference spatial datasets that users can locate and download.

Links to Leetown Science Center (LSC) projects and activities listed by principal investigator.

Cooperative research in the biological, geophysical, and social sciences with emphasis on upland ecosystems in the southern Appalachian Highlands.

USGS water resources home page for Illinois with links to detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, droughts, flooding, and water quality with highlights and project information.

National Information Water System (NWIS) water data for Illinois including real-time current conditions, streamflow data, site information, ground-water data, and water-quality data.

Key and tutorial to identify species of tadpoles from North America with color photographs.

List of Illinois District publications, report abstracts, water resources abstracts, and fact sheets, newsletter archives on water resources in Illinois with links to online publications.

Links to Illinois District water projects including projects on water quality, radium in ground water, ground water studies, and streamflow studies.

Access to real-time precipitation data for Illinois.

Links to streamflow, surface and ground water, water quality, flood, drought, and precipitation data in real-time and for historic time periods for Illinois.

Links to model documentation, search engine, and help for (FEQ) Full Equations (a computer model for one-dimensional unsteady flow in open channels and through control structures), and the Full Equations Utilities package (FEQUTL).

Map of stream conditions and links to precipitation data, drought statistics, and information on floods and droughts in Illinois.

Location and geology of drainage basins in Massachusetts and Rhode Island.

Perform custom searches for bird count and bird habitat data or enter your bird count and vegetation data.

Home page for the Massachusetts and Rhode Island District office for water resources with links to drainage basins, water, stream statistics, projects, publications, news reports, and location.

Access to Patuxent Wildlife Research Center fact sheets (PDFs) providing summaries of center studies on coastal ecosystems, birds, amphibians, taxonomy and other subjects and on center activities including partners and volunteer program.

Links to streamflow, surface and ground water, water quality, flood, drought, and precipitation data in real-time and for historic time periods for Massachusetts and Rhode Island.

List of all Massachusetts and Rhode Island District water projects with links to those with homepages.

Streamflow statistics and basin characteristics for most streams in Massachusetts using the Streamstats program. Data for areas can be selected from maps displayed by an interface (Java applet) and by an automated process. Includes a tutorial.

Lists of publications of the Massachusetts and Rhode Island District on water resources with links to online publications.

Cooperative national project with the Federal Highway Administration (FHWA) to evaluate FHWA's guidelines for highway-runoff quality. Links to searchable online bibliography of related publications by the USGS, EPA, FHWA, and state agencies.

List of publications related to Oklahoma water resources. Some on-line publication files are in PDF format.

Discussion and links to research for the multi-disciplinary investigation on the Norman Landfill located on alluvium associated with the Canadian River in central Oklahoma.

Digital data sets describing the Arbuckle Simpson aquifer and surrounding areas in Carter, Coal, Johnston, Murray, and Ponotoc Counties in Oklahoma. The data are in shapefile format to create maps for many uses.

Home page for links to state district activities in water resources data collection, research, and analysis in the Western Region.

Geological research of the Stellwagen Bank National Marine Sanctuary sea floor are presented in the form of maps, posters, fact sheets, sonar images, and bottom photographs.

Searching by geography and topics to locate scientific information about oceans, lakes, marine environments and coastal environments.

Interactive map server to view and create maps using available coastal and marine geology data sets of offshore and coastal U.S. and the Gulf of Mexico. Links to available data and metadata that can be downloaded.

Description and photos related to the Picher Mining District in Oklahoma, once a primary U.S. source of lead and zinc and now the largest superfund site in the U.S. with millions of cubic yards of mine tailings (locally known as "chat") remaining.

Online abstracts of reports on the hydrology of Oklahoma with a few on minerals and geology, which have not been fully digitized. Complete publications are available in libraries and some are still available for purchase.

Access to GIS geospatial datasets for Oklahoma and the United States for Geographic Information Systems (GIS) applications.

Study of the effects on the environment of hydrocarbons and produced water (brines) at Skiatook Lake, Osage Reservation, Oklahoma, with links to maps, photos, and data.

1995 freshwater withdrawal estimates for Oklahoma by source and category. Withdrawal data from ground water and surface water for domestic, commercial and agricultural use.

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.

Summaries of geologic projects in cooperation with the National Park Service including Grand Canyon National Park, Lake Mead National Recreation Area, Golden Gate National Recreation Area, Joshua Tree National Park, Yosemite National Park, and others.

Description of the methods of geochronology, the science of dating, used by USGS scientists in geological research.

Overview of the research group Geophysical Unit of Menlo Park (GUMP) with links to studies, models, and maps on gravity and geomagnetism in Nevada, California, Oregon, Washington and the U.S.

Description of the SCAMP project to produce geologic and geophysical maps and reports that describe the geologic setting and geologic history of southern California.

Techniques of computer-based representations of areal geology to construct three-dimensional geologic maps that retain all the information of traditional geologic maps while providing a more detailed picture of the subsurface.

Gateway to the geology of the San Francisco Bay region with links to geologic maps, paleontology, marine geology, earthquakes, landslides, and geophysics. Includes maps, 3-D models, and photos.

Description of research underway in the Pacific Northwest including geologic mapping and urban hazards studies with links to geologic maps, publications, and data.

Overview of the research of the Western Earth Surface Processes Team with links to team projects and activities and to geologic information on the western U.S.

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.

Homepage for the National Wetlands Research Center, Lafayette, Louisiana with links to general information, staff, issues and capabilities, library, publications and data.

List of National Wetlands Research Center, Lafayette, Louisiana publications.

Colored map compiled by merging geologic and topographic maps of the United States through computer processing and enhancement with links to panoramic movie using QuickTime, descriptions of features, and a game entitled Puzzle of Regions.

Tennessee water-use information including links to a fact sheet, data, charts, and maps.

Access to online publications produced by the Tennessee District and its cooperators on Tennessee water resources.

Online booklet giving an introduction to the concept of plate tectonics and complements the information on the map This Dynamic Planet published in 1994 by the U.S. Geological Survey (USGS) and the Smithsonian Institution.

Online booklet on the 1980 eruption of Mount St. Helens, past history, and future hazards.

Online booklet on the San Andreas fault system on the California coastal region with discussion of faults, relationship of faults and earthquakes, magnitude of earthquakes, and earthquake probability.

Online booklet on earthquake history, earthquake occurrences, measuring earthquakes, causes, relationship of volcanoes and earthquakes and earthquake prediction.

Online booklet with answers to frequently asked questions about dinosaurs.

Online booklet on natural gemstones, terminology, geologic environment, birthstones, U.S. production, chemical formulas, and references.

Booklet detailing plate tectonics, eruptions, hazards, and monitoring of U.S. volcanoes with black and white photos.

Online edition of booklet describing desert geology and mineral resources.

Booklet (PDF format) on the Pleistocene glaciations known as the Great Ice Age and the resulting geomorphological, climatic, and environmental changes that occurred on Earth during the period.

This booklet focuses on acid rain and its impact on our Nation's capital.

This booklet presents a generalized summary of the nature, workings, publications, and hazards of the common types of volcanoes around the world, along with a brief introduction to the techniques of volcano monitoring and research.

Drought water homepage with links to maps showing streamflow conditions, drought definitions, resources, publications, and answers to Frequently Asked Questions (FAQs).

Links to real-time streamflow data, river and storm alerts, snowpack reports, weather data and seasonal runoff for the state of Washington.

Access to data on water resources of Washington including surface water, ground water, water quality, water use, GIS, and biological datasets and access to reports.

Hydrologic data web page for the Water Resources Inventory Area 1 (WRIA 1) Watershed Management Project studying surface and ground water in the Nooksack watershed in northwest Washington. Links to environmental data and maps.

Bibliography of published reports, maps, journal articles, and proceedings related to the water resources of Washington State as published by the U.S. Geological Survey, or in cooperation with other Federal or State agencies.

Description of the studies of the ground water system in the Yakima River Basin and how it interacts with rivers and streams in the basin. Includes links to project status, datasets, maps, project summaries, news releases and bibliographies.

Description of studies conducted to evaluate the surface water, ground water, water interactions, and water quality of Methow River Basin in Washington. With links to related science topics, datasets, maps, project summaries, and news.

Presentation that the location of Chesapeake Bay may have been predetermined by a Eocene bolide, an extraterrestrial body, impacting the Earth in the vicinity of the Delmarva Peninsula at high velocity and exploding to create a large crater.

Describes the history, geologic changes (including the glacial formation and sea level changes), and geologic mapping of Cape Cod, Massachusetts.

Brief overview of gas hydrates and current research. Site also contains links to related USGS research and publications and web sites of other groups participating in gas hydrate research.

Boston Harbor/Massachusetts Bay Studies research project conducted as part of Boston Harbor cleanup to predict the fate of contaminants and sediments introduced to Massachusetts' coastal waters from sources that include Boston sewage outfall.

Available publications and products, order form and product archives of the Patuxent Wildlife Research Center.

List of plant specimens and photo gallery of plants in the collection of the herbarium at the Patuxent Wildlife Research Center, a reference collection of plants occurring in the area lying between Baltimore, Maryland and Washington D.C.

Links to news articles on scientific activities at Patuxent Wildlife Research Center, located in Maryland, north of Washington DC.

Links to pages on the history and natural history of Patuxent Wildlife Research Center.

The information provided in the CEE-TV database profiles available geo-referenced information on contaminant exposure and effects in terrestrial vertebrates along the U. S. coasts. The database utilizes Microsoft's Access 2000 for Windows.

Biomonitoring of Environmental Status and Trends (BEST) program is designed to assess and monitor the effects of environmental contaminants on biological resources with links to detailed information on specific species.

Search interface for current research activities at the Patuxent Wildlife Research Center, located in Maryland north of Washington DC

The North American Amphibian Monitoring Program (NAAMP) is a long-term monitoring program designed to track the status and trends of frog and toad populations with links to data access, protocol, and how to volunteer as an observer.

Core web page from America's first wildlife experiment station and a leading wildlife management refuge, the Patuxent Wildlife Research Center, Laurel, Maryland with links to projects, publications, library, contacts, and how to get there.

Programs developed at Patuxent Research Center (PWRC) and elsewhere for the analysis of animal populations for wildlife biologists and managers with downloadable software, source, and users' manuals.

A presentation of bird photographs, songs, identification tips, distribution maps, and life history information for North American birds, and a forum for commentary and discussion on birds.

Data management system for Breeding Bird Atlas projects in Maryland and the District of Columbia and in Vermont.

Describes the volcanic activity that occurred along the southern part of the Mono-Inyo Craters volcanic chain in California about 600 years ago.

Illustrates and describes commonly used volcano-related terms.

Describes the 6 main types of hazardous activities and processes associated with volcanoes, including tephra, lava flows, pyroclastic flows, lahars (volcanic mudflows), landslides, and volcanic gas.

Short descriptions of recent volcanic activity in the US.

Homepage of the Yellowstone Volcano Observatory with links to information about the observatory at Yellowstone National Park, volcanic history, photo gallery, monitoring data, publications and products, and Frequently Asked Questions (FAQs).

Selected books, maps, videos, and other materials produced by the USGS Volcano Hazards Program. Many products highlighted here are intended for general audiences.

Describes volcano monitoring at Yellowstone National Park including an update of recent volcanic activity, real-time data, and link to volcano monitoring techniques information.

Describes activities of USGS scientists to increase public awareness of volcano hazards with links to publication and videos for public information on understanding and preparing for volcanic hazards.

Describes the monitoring effort and provides real-time data of the current restless activity of the caldera, including earthquakes, ground deformation, and release of volcanic gas and plus link to volcano monitoring techniques.

Selection of photographic images of the Long Valley area that illustrate the consequences of the past geologic history of the Sierra Nevada, Long Valley Caldera, the Mono-Inyo Craters volcanic chain, glaciation, and faulting.

An introduction to the volcano hazards in the Long Valley area based on the past geologic history of the Long Valley Caldera and the Mono-Inyo Craters volcanic chain.

An explanation of toxic carbon dioxide emissions at Mammoth Mountain in Long Valley caldera, and a description of magmatic helium discharge at the Mammoth Mountain fumarole with photos, maps, and links to other studies.

Summarizes the geologic and volcanic activity of the Long Valley Caldera and Mono-Inyo Craters volcanic chain in east central California.

Describes the volcano-hazard zones for the Long Valley and Mono-Inyo Craters volcanic chain identified by scientists of the U.S. Geological Survey.

Hydrologic monitoring data for Long Valley caldera, California, on springs, streams, wells, fumaroles, and precipitation to study the natural hydrologic variations and the response of the hydrologic system to volcanic and tectonic processes.

Links to ongoing mineral resources projects in the Western Region of the United States plus links to offices and staff of the Western Mineral Resources Team.

Links to digital publications on minerals and mineral resources research in the western United States.

Western Ecological Research Center (WERC) publications and products search web page. Any products, which are available to download, appear as links. The links may be *.html, *.zip, *.pdf files or other file types.

Links to highlights, news releases, and fact sheets about Western Ecological Research Center (WERC) research and activities; brief summaries of published research; you can see and listen online as WERC scientists discuss their studies.

Using satellite telemetry and field studies to track pintail ducks during spring migration north from California's Central Valley plus pintails in New Mexico and Texas. Includes links to migration maps, journal, duck calls, and field methods.

Links to research studies, conservation information, and general information on desert tortoises at the Western Ecological Research Center in Sacramento, California.

Coastal ecosystem research at the Western Ecological Research Center with summaries of current projects and fact sheets on research studies (PDF format).

Links to explore South Florida and the Everglades ecosystem projects arranged by topic and subtopic, including proposals, project summaries, scopes of work, work plans, publications, and contacts.

A variety of publications including fact sheets, open file reports, circulars, and posters, are available on the South Florida Information Access (SOFIA) site.

This report serves as an environmental review and framework for developing USGS programs in the south Florida ecosystem, especially the Everglades and its watershed, and stresses the critical role of water in natural and human environment.

Links to metadata of South Florida research projects and to the webpage of the project.

Listing of South Florida Information Access (SOFIA) projects by region

Describes strategy of volcano warnings and the real-time detection of a sudden eruption or lahar and immediate notification of the activity to the public and local, state, and federal emergency-management officials.

Information on National Wildlife Center research on Chronic Wasting Disease, a disease affecting the nervous system of elk, white-tailed deer and mule deer.

Children's website on southern Florida aquatic biology with short movie clips of amphibians, games & puzzles, wildlife pictures, teacher resources, and more.

Poster presentations for Center for Aquatic Resource Studies projects related to Greater Everglades, marine and coral studies, ecotoxicology, manatees, coastal ecology, nonindigenous aquatic species, coastal ecology, freshwater fisheries, and herpetology.

Life history and identification of Salvinia species, a floating, rootless tree fern and a noxious aquatic weed. Site includes posters, instructions on submitting sightings, how to subscribe to a listserv on the weed, and a bibliography.

Links to information on species of frogs, toads, and salamanders located in the southeastern United States and the U.S. Virgin Islands, with information on appearance, habitats, calls, and status, plus photos, glossary, and provisional data.

Overview of the Southeastern Amphibian Research and Monitoring Initiative, annual report, field methods and protocols, statistical design and analysis, glossary, projects, and lists of frogs, toads and salamanders.

Report on status and trends of whitebark pine communities with references to related publications.

Remote sensing and field sampling techniques to support national assessment of burned areas

Summaries of research projects on black bear and grizzly ecology and ecosystems supporting the populations and bibliography of related publications.

Northern Rocky Mountain Science Center (NRMSC) based at Bozeman, Montana conducts research to help natural resources management in the Northern Rocky Mountains with field stations at West Glacier and Missoula. Links to staff, programs, and partners.

Description of project monitoring the status of Greater Glacier National Park Area's grizzly bear and black bear populations using genetic techniques on DNA from bear hair or scats without handling bears, with photos and discussion of methods.

Description of research program for immediate and long-term management of grizzly bears (Ursus arctos horribilis) inhabiting the Greater Yellowstone Ecosystem. Includes links to reports in PDF format and cooperating organizations.

Report on status and trends of limber pine communities with references.

Overview of interdisciplinary research studies in Glacier National Park to understand how this mountain wilderness responds to present climatic variability and other external stressors, such as air pollution, and links to detailed reports.

Detailed description of The Lower Missouri River Corridor Habitat Dynamics Project studying river habitat in a heavily engineered river.

Fact sheet (PDF format) on gas hydrates occurrence, recovery, and use as an energy source.

Brief descriptions, contacts, and links to other information and products for research programs of the USGS Central Energy Team on gas hydrates, petroleum expulsion, unconventional natural gas, petroleum systems, and reserve growth.

Catalog of USGS publications on energy resources of the U.S. including online publications, paper publications, and geospatial products (interactive maps and GIS data)

Methane (natural gas), while frequently developed with petroleum, also occurs in association with coal and accounts for about 7.5 percent of U.S. natural gas production. Links to digital publications on coalbed methane.

The USGS National Coal Assessment provides a quantitative study of the nation's coal endowment. Links to digital publications with maps for the Illinois Basin, Colorado, Arizona, Utah, and New Mexico, and Wyoming, Montana, and North Dakota.

Fact sheet in PDF format on occurrence and recoverability of coalbed methane in the U.S. and related environmental concerns.

Information on coal on federally owned public lands with links to database and maps for federal coal ownership of the United States, Rocky Mountains and Great Plains, and Colorado Plateau.

A rigorous geologic foundation for estimating world undiscovered energy resources. Links to world energy resources text and maps (PDF format), total petroleum system (TPS), and world geologic maps.

Arctic National Wildlife Refuge (ANWR) 1002 area's petroleum resource assessment. Text available in PDF and HTML formats.

Descriptions of Columbia Environmental Research Center's multidisciplinary research capabilities used in various ecological studies of large river floodplains, coastal habitats, wetlands, streams, and lakes.

Manual for research program on the nesting habits of sea turtles of the Virgin Islands, with descriptions of species, nesting behavior, observation methods, record keeping, tagging, and tissue sample collection. (PDF file, 121 pp.)

Field trip to Powder River Basin coalbed methane (CBM) development areas showing impacts related to drilling, facilities, pipeline networks, access roads, withdrawal, and disposal of co-produced water from CBM wells.

Compositional data on water from 47 CBM wells sampled in the Powder River Basin, Wyoming. Data on major, minor, and trace elements are included.

World Petroleum Assessment 2000 estimates of the quantities of conventional oil, gas, and natural gas liquids outside the United States that have the potential to be added to reserves in the next 30 years (1995 to 2025).

Coal resources, stratigraphy, geochemistry, coal quality and geology of coal in the Colorado Plateau, Arizona, New Mexico and Utah. Text in PDF format and available on CD-ROM.

Research on contamination by trichloroethylene (TCE) in fractured rock at the Naval Air Warfare Center in Trenton, N.J. with links to site description, bibliography, online reports, and findings.

Access is provided to seismic data, image files of seismic data, well logs, and cores of petroleum reserves in Alaska from the National Petroleum Reserve, Alaska, and (NPRA) Legacy Data Archive.

Links to oil and gas assessment maps of major basins in the United States and to related publications, and products.

Information on Alaskan energy resources in oil, petroleum, and natural gas with links to publications and other research.

Coal resources, stratigraphy, geochemistry, coal quality and geology of Tertiary coal beds and zones in the northern Rocky Mountains and Great Plains regions. Text in PDF format and available on CD-ROM.

Update on daily streamflow conditions and drought situation in New Jersey.

This site provides information on investigations of hydrocarbons in the unsaturated zone and shallow ground water at a gasoline-spill site in Galloway Township, N.J., with links to research projects, mathematical models, and photos.

Streamflow-gaging and water quality sampling sites with real-time and historical surface-water data for many of the sites in New Jersey.

Links to various earthquake projects, facts, science fair ideas, earthquake science, becoming an earthquake scientist, image glossary, earthquake facts, and puzzles and games for children.

This office provides technical and administrative management for U. S. Geological Survey activities in water resources with links to data, research projects, publications and products, and other offices in the Northeastern Region.

Information on organization of federal agencies committed to conserving, managing, and protecting Mid-Atlantic region's natural resources.

Real-time earthquake maps of the conterminous U.S., Alaska, Hawaii, and Puerto Rico displaying magnitude and location of earthquake activity in the past hour, past day, and past week.

Description of seismograms and how they are produced by drum recorders and electronic instruments with real-time seismograms for Northern California and Long Valley, California and representative seismograms for types of earthquake activity.

This web site is intended to provide the user with general information on the Office of the Delaware River Master and with timely access to the data and information collected and disseminated by the Office.

ShakeMap sites provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.

Near-real-time maps of location, ground motion, and shaking intensity of earthquakes in California and Nevada for the past hour, past day, and past week and links to other earthquake information.

Study of the probability of a major earthquake in San Francisco Bay region with colored map and links to relevant publications. Text also available in PDF format and graphic available in Illustrator or Photoshop format.

Answers to a wide variety of questions (FAQs) about earthquakes, such as dictionary of terms, earthquake activity and probabilities, common myths, faults, plate tectonics, and earthquake measurement techniques.

This report presents a visual, statistical presentation of five modeled flow-management alternatives and two reference alternatives for four selected sites on the Lower Missouri to aid in decision making for flow management of the river.

Links to Columbia Environmental Research Center online databases with text, data, and metadata on toxicity, Missouri River, biomonitoring of environmental status and trends, contaminants, and sediments.

Links to electronic publications of the Columbia Environmental Research Center (CERC) including journal articles and full-text publications accessible by publication series and subjects.

Paper by Duane Chapman for the 6th International SPMD Workshop and Symposium on a semipermeable membrane device (SPMD) measures contaminants in water by mimicking the parts of fish that cause concentration of specific chemicals in fish tissues.

Description of scientific exchange program between Columbia Environmental Research Center (CERC) and the Institute for Biology of Inland Waters (IBIW), Russian Academy of Sciences, Borok, Russia.

Experimental use of artificial burrows in south Texas to help in conservation of the migratory burrowing owls (Athene cunicularia) that breed in dry grasslands using animal burrows.

Links to electronic publications on Louisiana water resources, some in PDF format, and link to bibliographies of electronic and paper publications.

Bibliography of linked and cross-referenced publications and products on Louisiana water resources searchable by geographic region, subject, parish, and author.

Use of remotely sensed images and spatial data to help map and study coral reef environments. Web page deals with the remote sensing work done for the Pacific Ocean component of the USGS coral reef project.

Mini Image Processing system (MIPS) is a digital image processing software package complete with online documentation, ported for the Digital UNIX and Open VMS operating systems on the DEC Alpha platform.

Access to downloadable GIS databases including the Global Digital Elevation Model (DEM), remotely sensed products, data on world energy and mineral deposits, biodiversity, and geologic hazards for use with ArcView or free software.

Satellite images of Earth geared to children.

Terrestrial remote sensing program with links to coastal and marine, arid and semi-arid, other land environmental data and digital image products plus software Mini Image Processing Sensing System (MIPS).

Planetary Interactive G.I.S.-on-the-Web Analyzable Database (PIGWALD), an interface to support and integrate Geographic Information Systems (GIS) graphical, statistical, and spatial relational tools for analyses of planetary datasets.

Links to Connecticut water publications available as HTML and PDF formats.

Links to National Wildlife Health Center (NWHC) publications, metadata, manuals to download, and technical publications related to wildlife health and disease.

Frog malformation studies at the USGS National Wildlife Health Center in Madison, Wisconsin to document scope and to determine the causes of the observed malformations.

National Wildlife Health Center study of the West Nile Virus to learn the current geographic extent, to understand how the virus moves between birds, mosquitoes, and humans, and to predict future movements of the virus.

News releases on adenovirus, West Nile Virus, foot and mouth disease, iridovirus, chronic wasting disease, and other emerging health issues in wildlife.

USGS water resources home page for Idaho with links to detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, water quality, and water use, plus drought watch and relevant publications.

USGS Paleontology home page documenting the wide diversity in paleontologic studies and applications within the USGS.

The Eastern Earth Surface Processes Team provides geologic mapping regional geologic studies to determine stratigraphy and geologic structure, topical studies to understand geologic and surficial processes, and syntheses of earth science data.

The USGS in Augusta, Maine monitors river and ice conditions in areas of ice accumulation on the Kennebec River near Augusta providing real-time river stage data and real-time pictures of ice conditions at this location.

Daily streamflow data and drought conditions for Maine.

USGS water resources home page for Hawaii, Micronesia, and American Samoa with links to detailed hydrologic studies and real-time and long term data on streamflow, ground and surface water, water quality, rainfall, water use and current issues.

Images of Hawaiian volcanoes and the islands they've built in the past few million years, and images of recent eruptions.

Archive of feature stories on volcanic features on the Big Island, guided tours of Hawaii Volcanoes National Park, eruptions and eventful earthquakes, and other topics about the work of scientists at the Hawaiian Volcano Observatory.

Current activity, hazards, and history of eruptions of Mauna Loa.

Current activity, hazards, and history of eruptions of Kilauea Volcano.

Current activity of Mauna Loa Volcano with news, GPS data, electronic tiltmeter data, and current seismicity plus links to long term monitoring.

Interactive maps of earthquakes of last 2 hours, last 2 days, and last 2 weeks in Hawaii.

Volcano Watch is a weekly newsletter issued by the U.S. Geological Survey's Hawaiian Volcano Observatory on volcanic features on the Big Island, volcanic hazards, and informational topics of Long Valley, Montserrat, or Alaska.

Current Kilauea eruption activity, updated daily with recent photos, maps, and deformation information and links to video for broadband users, photo glossary, and image archive.

Images of Hawaiian volcanoes and the islands they've built in the past few million years, images of recent eruptions, and Hawaiian landscapes.

Volunteers from the USGS in Indiana, their families, and friends donate two Saturdays a year for a river-cleanup.

Planetary Data Systems (PDS) Mars Global Surveyor Mars Orbiter Camera (MOC) image collection with available images in decompressed JPEG format, raw data available by FTP access, web graphical images, and link to NASA's Map-a-Planet.

The Contaminant Biology Program investigates contaminant exposure and effects on fish, wildlife, and other organisms, their habitat and ecosystems. Links include description of projects, research centers, and news.

Distribution and characteristics of natural oil and gas seeps in California, including processes of formation and effects on the environment; with discussion of tar pits and asphaltum.

Precipitation-monitoring network for mercury in Indiana.

Overview of USGS programs related to geomagnetism including observatories, data, program services, links to models, charts, and movies, program contacts, Intermagnet, Geomag, publications, and bibliographies.

Program to compile data from the National Water-Quality Assessment Program study units to study national trends with links to sediment coring sites, video on Salt Lake City, study units identification, and publications.

Guide to the cooperative mapping programs in the state of Texas administered by the USGS Texas Mapping Partnership Office. Provides description of ongoing projects with links to USGS and cooperator datasets for the state of Texas.

Recharge and discharge summaries and other data, aeromagnetic survey map, and publications on Edwards Aquifer, Texas.

Real-time water data, interactive maps, and flood reports for river basins in Texas.

Description of the North Dakota stream-gaging program using a Missouri River streamflow-gaging station in Bismarck, North Dakota as an example explaining how and why the USGS collects stream data with photos and directions for visiting the station.

Overview of fire-related hazards for the fire management community and fire effects on the landscape with links to capabilities and programs, directory, and link to other agencies involved in wildfire research and management.

Searchable database for publications on water resources of North Dakota.

Includes hydrographic information from 2000 to last seven days, water-quality data, elevation, area, and capacity data and publications on Devils Lake, North Dakota in the Red River of the North basin.

Links to streamflow, stage, pictures, maps, river descriptions, and general information for canoeing on North Dakota's rivers. Files are in PDF format.

Site with GIS maps of western wildfire areas with some access limited to wildland fire managers.

This section of the San Francisco Bay website allows the extraction, tabulation, and downloading of specific subsets of water-quality data collected by the USGS creating either HTML formatted tables of data or comma delimited ASCII files.

Thirty year database of water-quality data, visual data displays, and project information on the San Francisco Bay directed towards following and understanding changes in the water quality of San Francisco Bay.

Data on presence and distribution of pesticides in surface and ground water of New York State.

The USGS provides map-on-demand (MOD) printing for selected infrequently requested geologic and other theme map products providing high-quality paper-copy maps as needed. Site links to available map products with thumbnail views and how to order.

Tide stage, specific conductance, water temperature, and freshwater inflow at selected Hudson River (New York) gages updated every 4-hours to measure the effects of freshwater withdrawals and upstream movement of the salt front.

Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor.

Place to provide information about ground shaking associated with significant earthquakes. A questionnaire to let us know what you felt following an earthquake in the United States or in other countries.

Sign up for USGS real-time earthquake notification services.

Information on earthquakes by topic including faults, tsunami, seismic waves, and plate tectonics.

Information on earthquake activity, maps, lists of significant earthquakes, earthquake preparedness, and earthquake research arranged by region.

Search interface allowing searches of earthquake databases by various parameters including date, depth, intensity, area, and magnitude and download data in a variety of formats.

Program to measure streamflow stage and discharge at four sites in the Upper Wallkill River Valley's Black Dirt Region and determine Total Suspended Solids (TSS) concentration data and estimate loads of TSS and sources of contaminants.

Pacific Northwest Information Node is a regional information network of the National Biological Information Infrastructure intended to provide access to information and services relevant to forest resources in the Pacific Northwest.

Informational site provides links to data, news updates, information, and maps related to outbreaks of the West Nile virus and mosquito-borne encephalitis in the United States.

Overview of Klamath ecological research and links to USGS Klamath studies on ground water, nutrients, sediment oxygen demand, and fish response to water quality, sucker ecology, publications, bibliographies, and data.

The USGS Surface-water quality and flow Modeling Interest Group (SMIG) is interested in surface-water quality and flow modeling activities with links to articles, model archives, data archives, clearinghouse, mailing list, classes, and meetings.

Links to real-time data for total dissolved gas, temperature, and barometric pressure in lower Columbia River in Oregon and Washington and to project reports.

Description of project studying hydrologic and chemical processes that affect the movement and fate of nitrogen within the shallow aquifers of the La Pine region of central Oregon.

Hydrologic data and analyses of surface-water, water quality, and ground water in the Johnson Creek basin in Oregon.

Overview of project assessing water quality of the Tualatin River basin near Portland, Oregon with links to reports on chemical and nutrient levels and selected data on streamflow, water temperature, weather and precipitation.

National Map Viewer, a GIS application, is a Web-enabled portal to the geospatial information contained in The National Map. It supports on-line access and allows the download of digital data and creation of cartographic products.

Geographic Analysis and Monitoring Program (GAM) conducts studies about land surface change, environmental and human health, fire and urban ecology, and natural hazards to help decision-makers in land-use planning and land management.

USGS water resources home page for Alabama with links to hydrologic studies and real-time and long-term data on streamflow, surface water, drought conditions, rain, and water quality.

USGS water resources home page for Alaska with links to detailed hydrologic studies and real-time and historic data on streamflow, ground and surface water, glaciers, and water quality plus research activities, publications, and contacts.

USGS water resources home page for Arkansas with links to detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, water quality, water use, and rain with links to publications and research partners

USGS water resources home page for Arizona with detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, water quality, and well levels plus current conditions, publications, and projects.

USGS water resources home page for California with links to detailed hydrologic studies and real-time data on streamflow, ground and surface water, and water quality, plus links to online reports, current issues, data archives and image archive.

USGS water resources home page for Colorado with links to detailed hydrologic studies and real-time and long-term data on streamflow, snowpack, sediment, ground and surface water, and water quality, plus publications, news, and drought watch.

USGS water resources home page for Connecticut with links to detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, water quality, streamflow conditions, gage stations, and drought.

USGS water resources home page for Florida with links to detailed hydrologic studies with real-time and long-term data on streamflow, ground and surface water, and water quality, plus publications and products, projects, news, and water watch.

USGS water resources home page for Georgia with links to detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, water quality, and floods, plus drought watch, current projects, and connections.

Use of hydroacoustics by the USGS in Indiana to make streamflow measurements using Acoustic Doppler Current Profilers (ADCPs) and other hydroacoustic current meters.

USGS water resources home page for Iowa with links to hydrologic studies and real-time and historical data on floods, streamflow, ground and surface water, sediment, precipitation, and water quality plus news releases, publications and contacts.

USGS water resources home page for Kansas with links to detailed hydrologic studies and real-time and historical data on streamflow, ground and surface water, and water quality plus flood watch, drought watch, publications, and district news.

USGS water resources home page for West Virginia with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, water use, and water quality, plus district information and press releases.

USGS water resources home page for Wisconsin with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, water use, and water quality, plus district and publications information.

The NBII Metadata Clearinghouse contains standardized metadata-based descriptions to assist in locating and accessing useful biological data sets, information products, and applications software in a distributed network of cooperating data sources.

Pacific Basin Information Node provides access to studies of biological resources associated with the Pacific Basin including tropical and subtropical islands and the surrounding marine environment.

California Information NODE (CAIN) of the National Biological Information Infrastructure collects data and information resources critical to the study of California's diverse ecosystems, with an initial emphasis on invasive species issues.

Gateway to southern Appalachian biological information with links to virtual area tours, species, data and models, partners, air and water quality, maps, invasive species, wild boar control, species identification, and news items.

The Bird Conservation Node facilitates rapid access to North American bird population and habitat data maintained by a broad coalition of Federal, state, and non-governmental partners in conservation. Includes life history, range, and habitats.

Central Southwest/Gulf Coast Information Node (CSWGCIN) of the National Biological Information Infrastructure (NBII) is a gateway to biological information on Arkansas, Louisiana, Oklahoma, Texas, and the Gulf of Mexico Coast.

The Southwest Information Node of the National Biological Information Structure (NBII) provides links to research data, maps, and information on public lands including plant and animal natural resources, ecosystems, and invasive species.

The Mountain Prairie Information Node (MPIN) provides scientific information about natural resources on public lands in the Northern Rockies region, Greater Yellowstone ecosystem and Glacier National Park. Was the Northern Rockies Information Node.

The Invasive Species Information Node (ISIN) of the National Biological Information Infrastructure (NBII) creates a central repository for information pertaining to the identification, description, management, and control of invasive species.

The Fisheries and Aquatic Resources (FAR) node of the National Biological Information Infrastructure (NBII) provides access to fisheries and aquatic resources information via the Internet.

Brief discussion of two water quality studies in the state of New Jersey with links to the Long-Island-New York Coastal Drainages study unit and the Delaware River Basin study unit.

Description of cooperative ecological research associated with the National Water-Quality Assessment program with links to current projects, download data, publications, and publications on biological sampling, habitat and laboratory protocols.

Data warehouse for national water quality program with links to chemical, biological, and physical data for water, sediment and animal tissues, nutrient, pesticide, and VOC levels, streamflow, and ground water levels from national study units.

Abstracts, program announcements and descriptions of projects funded by the external research program.

Studies of the trends of the Rocky Mountain population of trumpeter swans using time series analysis.

Project to assess the grizzly bear population size, trend, and survival in the Northern Continental Divide Ecosystem (NCDE) in Montana to improve the long-term survival for this threatened species. With description, DNA identification means and photos.

Brief review of some of the fundamentals of stable isotope geochemistry including definitions, basic principles, standards, and guidelines on reporting data.

Program using pattern recognition analysis and classification models to determine areas of irrigated land with concentrations of selenium.

Report on use of strip-transect aerial surveys to obtain minimum manatee counts and distribution information in area of Ten Thousand Islands, Florida, with maps, diagrams, and information on method and results.

Report on the Sirenia Project use of a radio tracking study to determine manatee movement patterns and habitat to develop ecological models to understand and predict the effects of hydrologic restoration on manatees in Southwest Florida.

Field guide to identify amphibian species from the larvae and eggs. Available to download in Adobe PDF or UMESC format.

Searchable database of mineral and material commodities with descriptions, contacts, and historical and current statistics of worldwide supply, demand, production and trade in Mineral Commodity Studies, Minerals Yearbooks, and special publications.

Part B of a complex report on the results of geochemical analysis of 75 shale samples from the Los Angeles, Ventura, and San Joaquin Basins to gather observations relevant to exploration regarding the formation of oil deposits in these basins.

Glossary of geothermal and hydrothermal activity terms.

Examples of the use of volcanic energy in geothermal power plants.

Description and map of geothermal resources in California.

Subsurface temperature, well temperature, and well data of geothermal resources in the Great Basin.

Description of volcanic geysers, fumaroles, and hot springs.

The Reston Stable Isotope Laboratory conducts research on the use of isotope ratio measurements in studies of water resources and environmental quality.

Because of its origin in natural resource surveys and the similarity of the USGS mission to Thomas Jefferson's charge to Meriwether Lewis, the USGS can be seen as the organizational successor to Lewis and Clark.

Links to checklists and species maps showing the distribution of mayflies in the United States with links to other information websites on mayflies and reference list.

Review of the size of breeding populations of Giant Canada geese by states in the Mississippi, Atlantic, Central, and Pacific flyways and the management problems caused by rapid increases of local breeding populations.

Article from Wildlife Monographs no. 100 (1988) on the relationships of wetland habitat dynamics and life history to the breeding distributions of the various species of ducks with information on research methods and references.

Links to checklists and species maps showing the distribution of stoneflies in the United States with links to other information websites on stoneflies and reference list.

Links to checklists and species maps showing the distribution of tiger beetles in the United States with links to photographs, other information websites on invertebrates, and reference list.

General information on the science of hydrology with information on ground water, surface water, water use, the work of hydrologists, and hydrology as a career.

Homepage for the research on occurrence, movement, flux, fate, and effects of agricultural chemicals, such as pesticides, in 25 states by the Midcontinent Agricultural Chemical Research Project (MACRP) with links to study results and publications.

Overview of aspects of research on pesticides and herbicides in Midwestern rivers with collection of data, results over a period of time, online publications, and bibliography.

Publications by the USGS on mineral deposit models converted to digital files that can be downloaded. Some are *.pdf files requiring Adobe Acrobat Reader to view and download text

Site with a series of articles showing how chemists and geologists use analytical chemistry to determine the age of the Earth, determine Earth's history, predict volcanic eruptions, observe long-term atmospheric change and study pollution.

Guide to major U.S. environmental statutes and corresponding regulations on air quality, fish and wildlife conservation, cultural and historic resources, solid and hazardous substances, public lands, farmlands, and water resources.

Links to mineral statistics from annual Mineral Yearbooks for each state in the United States and Puerto Rico, with contacts for further information, and means to apply for e-mail subscription service for regular updates.

The USGS-NPS Vegetation Mapping Program is a cooperative effort with the National Park Service (NPS) to classify, describe, and map vegetation communities in over 270 U.S. national park units with links to overview, standards, products, and applications.

Document on the National Vegetation Classification Standard with information on applications, background, development, characteristics, nomenclature standards, relationship to other classifications, and how to do vegetation mapping.

Images from Mars Pathfinder Mission and the process of mapping the landing site.

Images from the Clementine spacecraft, which successfully mapped the Moon with 4 cameras (UVVIS 415-1000nm; NIR 1100-2789 nm; HI-RES 415-750 nm; LWIR 9 microns) over the period February through May 1994.

Mosaics of the Martian hemispheres created by the USGS from Viking Orbiter images.

Images of planets of the solar system.

Satellite image map of Antarctica using Advanced Very High Resolution Radiometer (AVHRR) images, including stereo images for use with red/blue glasses.

Digital image maps documenting the amount of change in open space between 1984 and 1997 within the study area and document where these changes have occurred in order to effectively evaluate change in big game habitat.

Chapter from Land Use History of the North America on the results of a study to understand the interactions of population growth, urbanization, and agricultural activity over time.

Paper from Land Use History of North America giving results of a study to estimate the extent of developed land in the United States and the impact of development on soil resources.

Digital Elevation Model (DEM) images and bathymetry data of the San Francisco Bay, Santa Clara, and the Monterey Bay and Canyon areas.

Digital satellite images, digitized aerial photographs, and ground-based digital camera photographs monitoring the changes in wetland restoration.

Landsat TM and bathymetry mosaic images of sediment and pollutant transport in central San Francisco Bay.

A chapter of the publication: Land Use History of North America on general patterns of plant species diversity in North America that shows how these patterns have changed over time.

Flagstaff atlas webpages including digital elevation model images, Landsat Thematic Mapper images, SPOT panchromatic stereo images, and digital photos of Flagstaff. Includes link to the original Open File Report OF-96-739.

Remotely sensed image products covering the Gulf of the Farallones region west of San Francisco.

Remote sensing images of San Francisco Bay and Delta region.

Links to remote sensing images monitoring wind erosion and rainfall in Arizona.

Links to remote sensing images monitoring dust storms and wind erosion.

Links to Landsat Thematic Mapper images used in mapping regional and local eolian erosion vulnerability in Southwestern U.S.

Monterey Bay sea floor image maps.

A description of research activities of the Baltimore-Washington Regional Collaboratory urban growth in the Chesapeake region.

Results of a study that provides a regional vegetation history of the Great Lakes area during the last 150 years compared to the preceding 1,000 years.

Animated WaterWatch streamflow maps showing daily highs and lows.

Report presents an abridged guide for laboratory technicians and students using X-ray powder diffraction methodology to study crystalline structure and to determine the mineralogy of finer grained sediments, especially clays.

Fact sheet on what "water quality" means, how it is determined, and the natural processes and human activities that affect it.

Examples of on-site, place-focused research programs using USGS scientists in land management projects.

Online reports, site description and photographs of the Amargosa Desert research site monitoring low level radioactive waste.

Comprehensive information providing an introduction to GIS technology, data gathering, modeling, information retrieval, and applications with colored maps, graphs, diagrams, and photos.

Presents a wetland classification system that reflects seasonal, regional, and local variations in the environment.

Study to reconstruct presettlement vegetation patterns along two navigation reaches of the Upper Mississippi.

A report published jointly by the U.S. Bureau of Mines and U.S. Geological Survey giving definitions of coal resource classification terms.

This study illustrates some approaches for reconstructing landscape change.

The classification system by which coal is classified into resource/reserve base/reserve categories on the basis of the geologic assurance of the existence of those categories and on the economic feasibility of their recovery.

Homepage of the Water Resources Research Institute (WRRI) Program with links to institutes, projects, and programs.

Homepage of the USGS Wildlife and Terrestrial Resources Program with links to projects, centers, and cooperative research units.

Study of the processes by which the conversion occurred of the Palouse bioregion from perennial native grass, shrub, and forest vegetation to agriculture and the interactions between human cultures and environment.

Adaptation of a poster presented at Metals in Antiquity Symposium, Harvard, September 10-13, 1997.

U.S. Geological Survey and National Park Service virtual geology sites organized by geology topics and individual parks.

Database provides information on petroleum reservoirs, type and abundance of constituents dissolved in produced water, geochemical reactions between the water and rock, hydrology and geologic, spatial distribution of petroleum production areas.

Homepage of the World Coal Quality Inventory (WoCQI) with sample collection procedures.

Site has links to Mohave National Preserve: geologic field trips, geologic history, plate tectonics, rocks and minerals, geologic time, geologic maps, and glossary.

Data from some 7,000 wells monitoring annual water level changes in the High Plains aquifer indicting changes in water level 1980 to 2002.

Links to information collection, discovery, products, and policies of the USGS. Also links to information management-related fact sheets.

Site has links to Sunset Crater Volcano National Monument geologic field trips, geologic history, plate tectonics, rocks and minerals, geologic time, geologic maps, and glossary.

Links to USGS activities in the environment theme area, including anthropogenic and natural contaminants, ecosystems, energy, human health, global change, etc. Also includes links to environment-related fact sheets.

Site has links to Lake Mead National Recreation Area: geologic field trips, geologic history, plate tectonics, rocks and minerals, geologic time, geologic maps, and glossary.

Site has links to Devils Postpile's geologic history, rocks and minerals, geologic time, geologic maps.

Site has links to Death Valley's geologic history, rocks and minerals, geologic time, geologic maps.

Site describes the present understanding of the various geologic processes that contributed to the valley's creation. Links to Yosemite Valley's geologic maps.

Basic facts about USGS budget for FY 1997 to present.

Lists of current grant and contract opportunities, vendor mailing lists, USGS Business and Economic Development Program (BEDP) goals, and other useful sites.

Site explains the general bedrock geology of the Yosemite Valley area.

Links to upcoming events, USGS customer services, reports, service plans, policies, and research.

Description of earthquake that was felt in Joshua Tree region (1999) and links to earthquake summary, shaded relief map, aerial photos of the rupture zone, shaking intensity maps, damage reports, and seismograph network map.

Links to fiscal year reports, USGS manual chapters dealing with native issues, and USGS contacts for dealing with American Indian/Alaska Native concerns.

This site contains information on Memorandums of Understanding (MOUs) signed by the Director of the USGS. Links also are being developed to display information on MOUs that have been signed by the USGS Division Chiefs and their representatives.

Overall goals and strategy by which the USGS intends to carry out its mission

Links to partnership agreements of the USGS.

U.S. Geological Survey Visual Identity System web site provides links to design solutions for all USGS science, communication, and identification products.

Downloadable geologic data and 1:100,000-scale geologic maps of the Las Vegas Valley.

Downloadable digital maps of the Mesquite and Moapa West quadrangles, and links to shaded relief maps of California, Nevada, and Arizona.

Summary of the most recent eruption of Lassen Peak, Cascades (1914-1917)

This publication focuses on the geological framework and sedimentary processes of the Lake Pontchartrain Basin and provides links to interactive tools, regional research, and sediment data in GIS formats for display and analysis.

This site is designed to provide information on federal interagency and cooperative developments related to coastal sand and gravel resources and management issues along the Atlantic continental margin.

Surficial geologic map of the Yosemite National Park area with links to the legend and text.

Modified version of paper by F.T. Manheim and A.G. McIntire, Civil Engineering Practice, Vol. 13, No. 1, pp. 35-48 (1998). A new shoreline file has been created for Boston Harbor by digitizing and combining the most recent charts.

Description of Yakima River Basin Program including: location of basin, description of economic activities, water management issues and modeling processes used to account for water availability.

This web site is an outgrowth of an agreement between the USGS and the New England Aquarium, designed to summarize and make available results of scientific research. It will also present educational material of interest to wide audiences.

The Hydro-Climatic Data Network, or HCDN, consists of streamflow records for 1,659 sites throughout United States and its Territories. Records span the period 1874 through 1988, and represent a total of 73,231 water years of information.

Description of the Flood Hazards study project by Water Resources Program in Tacoma, Washington with links to other flood hazard projects.

Description of research studies of the Lake Roosavelt-Upper Columbia area on contaminants and effects on environmental health with links to publications and products, partners, related links, project summaries, and contacts.

Link to PDF fact sheet describing the SEABASS system that collects seabed images and sediment samples in coastal regions.

Access to Forest and Rangeland Ecosystem Science Center fact sheets on fish, fish diseases, aquatic resources, and other projects and activities.

The information, citations, and hypothetical examples provided in this report highlight how basic principles and assessments are essential components of the regulatory and policy decision-making process. Link to PDF version.

Digitally compiled interactive maps with links to metadata, descriptions of map units, and data files.

MRDS is a worldwide database of metallic and industrial mineral sites. Links to portions of the database that are available online.

Links to facilities and capabilities of the DML such as the electron microscope and electron microprobe.

Report provides the multibeam bathymetry and acoustic backscatter data, images, FGDC-compliant metadata, and GIS data from the 2002 surveys and 1997 USGS surveys of the Gulf.

Downloadable descriptions of mines, prospects, and mineral occurrences for individual U.S. Geological Survey 1:250,000-scale quadrangles in Alaska.

Information sources on El Nino effects such as landslides, coastal hazards, floods. Includes links to maps and images.

Description of the National Community Sediment-Transport Model (NCSTM), an open source numerical model for sediment transport in coastal regions.

Report on workshop to explore a community approach to improving deterministic models of sediment transport in coastal seas, estuaries, and rivers.

Access to InfoBank, an online data catalog, to browse or retrieve coastal and marine geology program information, images, and data on gravity, bathymetry, seismic activity, magnetics, samples, facilities, cruises and equipment.

List of USGS publishing services and capabilities used in exhibits, poster displays, book, map, CD-ROM, and online publishing.

Fact sheets and reports on the National Map in HTML format or PDFs.

Fact sheet on mercury bioaccumulation and cycling in the environment. Also available in PDF format.

Program that monitors, assesses, and communicates the results of the quantity and quality of water in rivers and aquifers.

Summary of workshop with links to reports that are recommendations for future projects.

Project summaries and publications on wildlife contaminant exposures and prediction and monitoring of future restoration-driven exposures within the South Florida ecosystems.

Webpage of the Alaska Geographic Sciences Office with links to the Bureau level programs it is responsible for managing: Geographic Analysis and Monitoring (GAM), Land Remote Sensing (LRS), and Cooperative Topographic Mapping (CTM).

Homepage for biological characterization activities with links to: Gap Analysis Program, Vegetation Mapping Programs, Land Use History of North America, and Integrated Taxonomic Information System.

Homepage for informatics activities with links to: Information Collection Management, Information Access Models and Analytical Tools, Technical Infrastructure, and Information Management programs.

Main page for the Arsenic Studies group with links to arsenic related announcements, conferences, bibliography, workshops, and symposiums.

Homepage for geospatial technologies activities with links to Biological Resources Division Geospatial Technology programs and GIS laboratories, and support for GPS users.

Monthly online newsletter covering coastal and marine science with links listed under sections titled fieldwork, meetings, outreach, and research.

The Ocean Bottom Seismometer facility provides technical support for a variety of scientific investigations ranging from deep crustal structure to gas hydrate and surface sediments.

Description and uses of the Ocean Bottom Seismometer; a self contained data-acquisition system which free falls to the ocean floor and records seismic data generated by airguns and earthquakes.

Bedform sedimentology home page with links to information on sedimentary structures including, explanatory text, computer-generated images and movies, photographs, and bedform simulation software.

The on-line version of Cross-Bedding, Bedforms, and Paleocurrents, with computer images, photographic images, and text.

The bibliography provides citations pertinent to the effects of fire and its prescribed use on the ecosystems and species of Wisconsin and the upper Midwest. Three separate subject indexes are provided: general, species, and geographic location.

This bibliography is intended to provide scientists, managers, educational institutions (or students), and policy-makers with online access to current information on wetland restoration.

The following database summarizes the results from aquatic acute toxicity tests conducted by the USGS CERC located in Columbia, Missouri.

The Electronic Natural History Museum Project is a collaborative effort among government agencies, natural history collections and museums, and universities for providing access to data on specimens in natural history museum collections.

A searchable, living bibliography on the subject of savannas and their restoration.

Browsable online access to the CSA/NBII Biocomplexity Thesaurus developed in 2002-2003 through a partnership between the NBII and CSA as a merger of five thesauri.

Online report summarizing the economic analysis of the U.S. Geological Survey's 2002 petroleum assessment of the Federal lands in the National Petroleum Reserve Alaska (NPRA) study area.

Description of the project to publish new bedrock geologic maps in the United States to advance the understanding of the region's bedrock aquifers. Includes list of projects.

Links to PDF version of the field guide.

Links to fact sheet describing the database of spatial information on sage grouse and sagebrush habitats.

Fact sheet in Adobe PDF about ospreys in Oregon and the Pacific Northwest

USGS Forest and Rangeland Ecosystem Science Center: fact sheet in Adobe PDF about the studies to restore sagebrush steppe

Fact sheet in Adobe PDF on assessing the health of rangeland by monitoring and inventory which can help land managers

Research brief for resource managers on the ecology of Crater Lake.

Links to reports, bibliographies, and other information on the High Plains aquifer.

Earthquake and aftershock data collected by the USGS General Earthquake Observation System project in Menlo Park, California.

This site is a prototype clearinghouse for techniques, procedures, documentation, software and macros that support the creation, use and release of digital geologic map datasets.

Site to submit a question to Ask-A-Geologist where scientists research the answers to the questions, then reply directly by email.

The study of petroleum in both the saturated and unsaturated zones, to better understand the processes that control contaminant behavior, and to use this understanding to estimate the future behavior of the contaminants.

Home page contains information, data, maps, and images relating to hydrologic research that has been conducted at the Bemidji research site.

Overview of the Pacific Northwest Urban Corridor Geologic Mapping Program concerned with geology and urban hazards with links to online geologic maps, current research, publications, and contacts.

Main page for Central Region Geology with links to offices and laboratories, science teams and capabilities, and geology services.

Technical information on the Aircraft Scanners data set at the USGS EROS Data Center containing digital imagery acquired from several multispectral scanners collected over conterminous United States, Alaska, and NASA aircraft and how to order.

Address list for companies selling shaded and raised-relief maps (three dimensional) to show contours and elevations and may be in plastic, rubber or vinyl and not available from the USGS.

Description and illustrations of hydroacoustic current meters for measuring the discharge in streams and rivers with links to wading discharge measurements, project progress and plans and references.

Review of current research on stock assessment of the Pacific walrus in the Chukchi and Bering Seas and interactions between walruses and their environment with links to walrus taxonomy, distribution, behavior, and relation to man

Downloadable files of digital bathymetry of U.S. waters, the Bering and Chukchi Seas, Bering Strait, and Gulf of Anadyr in polygon ARC/INFO. Coverage generated from both digital and paper bathymetry sources developed to support marine research.

Lists of largest earthquakes in the world and in the United States, earthquake facts and statistics, deaths from earthquakes, earthquakes by magnitude, and significant earthquakes.

Download digital geologic databases produced by the Southern California Areal Mapping Project (SCAMP) or view SCAMP work in progress by clicking on 1:100,000-scale, 30x60' quadrangles.

Main page for USGS contacts with links to offices, phonebook, directory of key officials, organization charts, USGS programs, and clickable U.S. map with links to office locations by state.

Map display that highlights states where the streamflow index at USGS streamgages, averaged statewide, were below normal for the past seven days with links to comparison of recent streamflow values with historic values.

Home page on hydrology studies on mercury, the most common contaminant of aquatic ecosystems, with links to general information, research team projects and data.

National Streamflow Information Program home page describing the operation and maintenance of 7000 streamgages, overview of the program, system for collection of streamflow data, maintaining of historic streamflow data, and available reports.

Click on a state on a map or list to access status of geologic mapping at the scales of 1:24,000 and 1:100,000 under the National Cooperative Geologic Mapping Program (NCGMP) providing federal matching funds for state geologic work.

Technical review of the principles of spectroscopy and its use in identifying minerals and other materials.

Report of a pilot study to classify vegetation communities in parts of the Smoky Mountains National Park by sampling vegetation in selected areas with information on field methods and data analysis and lists of communities identified.

Brief review of bat research in the San Francisco Bay area and southern California providing land managers with information on the occurrence and status of bat species with links to bat inventories for California and related material.

Overview of project to develop and apply a variety of earth science methods to interpret the geologic links between mineral dusts such as silica and asbestos and human health problems with links to contacts, tasks, and products.

Fact sheet on hazards from earthquakes and tsunamis in Puerto Rico and the U.S. Virgin Islands to be downloaded as a PDF file or viewed as an Adobe Acrobat Reader file.

Description of program and links to information on research related to the biotic resources of the lower Rio Grande (between Elephant Butte Reservoir in New Mexico and extending to the Gulf of Mexico) and its adjacent terrestrial habitats.

Discussion of large floods and occurrence in relationship to regional climatology, topography, and basin size.

The Office of Surface Water at NASA's Stennis Space Center (SSC) near Bay St. Louis, MS includes an indoor hydraulics laboratory available for rent. Links to meter calibrations, current meter performance, and modeling activities.

Review of the Global Change Hydrology Program components relating to hydroclimatology and studies of the biogeochemistry of greenhouse gases with links to research activities, datasets, fact sheets, and other publications and websites.

Use of tree ring dating to study distinct episodes of hydrologic change in the Tully Valley wetland, New York recording history of solution-brine injection mining for salt.

Workshop with papers on diseases, treatment, disease resistance, and immunology of fish, shrimp, corals, and lobsters.

Report on the population of northern pintails between 1979 and the 1990s in Sacramento Valley, California, including methods of study including radio telemetry, causes of mortality, morphometrics, survival rates, and management implications.

Report prepared for the U.S. Fish and Wildlife Service with descriptions of exotic aquatic species introduced in the southeast United States with information on populations, geographic distribution, and origins.

Brief descriptions of programs of research on aquatic nonindigenous plants and animals at the Florida Integrated Science Center with links to descriptions, videos, posters, and reports on various exotic plant and animals species.

Homepage for the Nearshore Benthic Habitats Project for mapping geophysical characterization of the coastal sea floor to identify benthic fish and shellfish habitat with links to research cruises and preliminary results.

Information on earthquakes in central California and the San Francisco region with links to four types of field studies, deep seismic investigations, geotechnical investigations, shallow seismic imaging, and airborne geophysical surveys.

Publication (PDF format) in three parts on the biostratigraphy and lithostratigraphy of the Ibexian Series in the North American Ordovician, with sections on the southern Egan Range, Nevada and the biostratigraphy of the eastern Great Basin.

Report on a community of microscopic organisms, Archaea, found deep in an Idaho hot spring living on hydrogen and carbon dioxide that could possibly exist on other planets. Includes links to related studies, investigators, and microbiology.

Report describes an electronic database of annotated citations relevant to fish passage through dams. Document may be searched using the search form or downloaded as an Endnote, Microsoft Word, or WordPerfect

Study of the effects on the Gulf of the Farallones National Marine Sanctuary resulting from the disposal of San Francisco dredged material and barrels of low-level radioactive waste with links to publications and atlas with digital images.

Brief description of the research program to inventory the natural resources of Monterey Bay National Marine Sanctuary with links to cruises, and publications and products, including an internet map server, imagery, and geologic descriptions.

Overview of studies of marine sediment on the continental shelf south of Los Angeles contaminated with DDT and PCBs from past sewage effluent discharges with links to research on Santa Monica Bay, Los Angeles Shelf and Palos Verdes Peninsula.

Overview with links to studies on the effects of human activity on the San Francisco estuary with loss of historic fresh and saltwater tidal marshes reducing habitats, introducing contaminants in waste, and creating dredging problems.

Brief introduction to the Landsat Data Continuity Mission (LDCM) of the USGS and NASA to continue providing satellite remote sensing information to the world. Includes links to RFP, images, applicable laws, workshops, and feedback.

Report with mini-movie and photos on the hypothesis that the atmospheric transport of dust arising from the desertification in northern Africa led to algal infestation of corals, coral diseases, and the near extinction of associated sea urchins.

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.

Information on arsenic in United States ground water largely as a result of minerals dissolving from weathered rocks and soils. Includes links to publications, data, maps, and links to other sites with information on arsenic.