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National Biophysical Data Sources
Geospatial Data Gateway
http://datagateway.nrcs.usda.gov/
The Geospatial Data Gateway provides One Stop Shopping for natural resources or environmental data at anytime, from anywhere, to anyone. The Gateway allows you to choose your area of interest, browse and select data from our catalog, customize the format, and have it downloaded or shipped on CD. It is a service of the USDA NRCS.
NASA Earth-Sun System Gateway
The Earth-Sun System Gateway (ESG) will provide access to vast amounts of information gathered by NASA and other organizations about planet Earth and the Earth-Sun system. ESG will allow you to display views from Web Map Servers, overlay multiple views from different servers, and search for other data holdings; save views you create for later use or to share with friends or colleagues; register your own Web Map Servers and data holdings for others to see and use; use open interfaces to connect your software to services provided by ESG.
NASA Earth-Sun Science System Components
http://www.asd.ssc.nasa.gov/m2m/coin_chart.aspx
This website provides reference information about Earth-Sun system science observational spacecraft, sensors, data products, models, and model products affiliated with the NASA Science Mission Directorate, as well as partner-led decision support systems that integrate NASA data products. It is intended to facilitate assessment of the utility of NASA satellite measurements and model predictions within decision support tools. Additional information is provided on NASA crosscutting capabilities and federal and domestic partners.
TerraServer-USA.com
The TerraServer-USA Web site is one of the world's largest online databases, providing free public access to a vast data store of maps and aerial photographs of the United States. The primary data types currently include USGS digital aerial photos (DOQQs) and scanned topographic maps (DRGs). It is possible to download screen shots of these (in .jpg format) as well as associated World Files (which contain the UTM WGS84 coordinates of the top-lefthand corner of the image -- use .jgw extension).
Using TerraServer-USA (pdf, 2.4 MB)
Geospatial One-Stop
The Geospatial One-Stop is a service of the National Spatial Data Infrastructure. It is an intergovernmental project managed by the Department of the Interior in support of the President's Initiative for E-government that builds upon its partnership with the Federal Geographic Data Committee (FGDC) to improve the ability of the public and government to use geospatial information to support the business of government and facilitate decision-making.
Through the Geospatial One Stop Portal, anyone can access geospatial information from federal agencies and a growing number of state, local, tribal and private agencies through one comprehensive and comprehensible portal. In conjunction with FGDC, Geospatial One-Stop also facilitates standardization and intergovernmental agreements on standards and interoperability.
Geography Network
http://www.geographynetwork.com/
The Geography Network is a global network of geographic information users and providers. It provides the infrastructure needed to support the sharing of geographic information among data providers, service providers, and users around the world. Through the Geography Network, you can access many types of geographic content including dynamic maps, downloadable data, and more advanced Web services.
FCDC National Geospatial Data Clearinghouse
http://clearinghouse3.fgdc.gov/
The Geospatial Data Clearinghouse is a collection of over 250 spatial data servers that have digital geographic data primarily for use in Geographic Information Systems, image processing systems, and other modelling software. These data collections can be searched through a single interface based on their descriptions, or "metadata."
USGS Global Visualization Viewer
http://www.geographynetwork.com/
The USGS Global Visualization Viewer is an online search and order tool that allows the user to quickly find satellite data.
USGS GEODE: Geodata Explorer
Use GEO-DATA Explorer (GEODE) to access, view, and download information from geo-spatial databases containing a broad spectrum of data produced by the USGS and other government agencies.
USGS: The National Map
The National Map is a consistent framework for geographic knowledge. It provides public access to high-quality, geospatial data and information from multiple partners to help support decisionmaking by resource managers and the public.
USGS: Earth Explorer
http://edcsns17.cr.usgs.gov/EarthExplorer/
Earth Explorer allows the user to query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey.
USGS: GISDATA Map Studio
The GISDATA Map Studio is a site hosted at the National Center for Earth Resources Observation and Science (EROS) by the USGS. It includes public web map services and interfaces developed at the center. Many of the public web map services are published on the Geography Network, and some national services are cohosted by ESRI.
USGS Forest Service FSGeodata Clearinghouse
http://fsgeodata.sc.egov.usda.gov/
The FSGeodata Clearinghouse provides download access to selected geospatial information and metadata held by the Forest Service for National Forest System lands, including feature data such as roads and streams, map images, and fire mapping information.
National Integrated Land System (NILS)
The National Integrated Land System (NILS) is a joint project between the BLM and the USDA Forest Service in partnership with the states, counties, and private industry to provide business solutions for the management of cadastral records and land parcel information in a Geographic Information System (GIS) environment.
NILS provides a process to collect, maintain, and store parcel-based land and survey information that meets the common, shared business needs of land title and land resource management. In addition, NILS provides the user with tools to manage land records and cadastral data in a "Field-to-Fabric" manner: the user can use field survey measurement data directly from the survey measuring equipment, manipulate this data into lines and points, and create legal land and parcel descriptions to be used in mapping and land record maintenance.
EPA: STORET
STORET is the EPA's largest computerized environmental data system.
STORET (short for STOrage and RETrieval) is a repository for water quality, biological, and physical data and is used by state environmental agencies, EPA and other federal agencies, universities, private citizens, and many others.
EPA BASINS
http://www.epa.gov/waterscience/basins/index.html
BASINS (Better Assessment Science Integrating Point and Nonpoint Sources) is a tool for managing watersheds. It is a multi-purpose environmental analysis system that integrates a geographical information systems, national watershed data, and state-of-the-art environmental assessment and modeling tools into one package.
USGS: National Atlas
You've seen other atlases. They're typically big books of paper maps. The pages in this atlas are here on the Internet whenever you need them. This is a new portrayal of America in maps. We use new technologies, but we honor traditions of accuracy, reliability, and innovation. You've found the single best Federal source for national maps and geographic information on the Web. The people and places of the United States are here.
Landsat.org
Landsat.org supports the purchasing, distribution, and sharing of Landsat 4, 5 and 7 imagery worldwide by providing a simple, platform-independent user interface and search engine with online data ordering. Landsat.org supports research centers, science teams, and educationsl organization by providing customized search interfaces, acccess to data hosting services, clearinghouse services, data brokering, and imagery cooperatives.
Landsat 7 Imagery Finder
http://resac.msu.edu/usmaps.html
The Landsat 7 Imagery Finder is a service provided by Landsat.org provided to the Upper Midwest RESAC (Regional Earth Science Applications Center) based at Michigan State University. It provides a simple visual interface to locate Landsat 7 imagery.
NASA Land Processes DAAC: Earth Observing System Data Gateway
http://edcimswww.cr.usgs.gov/pub/imswelcome/
The Earth Observing System Data Gateway is a service of the NASA Land Processes Distributed Active Archive Center (DAAC). It allows the user to search for and order earth science data products from NASA and affiliated centers.
NASA Distributed Active Archive System (DAAC)
http://nasadaacs.eos.nasa.gov/
NASA DAAC data centers provide Earth science data from NASA's Earth-observing stellites, data-handling software, and user support.
EROS Data Canter Entry Point to Geospatial Data Clearinghouse
http://edcw2ks15.cr.usgs.gov/fgdc/EDCgateway.html
The EROS Data Center (EDC) Entry Point to Geospatial data Clearinghouse allows th user to select one of several interfaces to search for spatial data based on its location, time period of content, and allow for full-text and fielded search. Its interfaces may also be used to search for spatial data that has been made available using the OpenGIS Web Mapping specifications. Once discovered, map services can be collectively viewed together for visualization.
National Geodetic Survey: Continuously Operating Reference Stations (CORS)
The National Geodetic Survey (NGS), an office of NOAA's National Ocean Service, coordinates two networks of continuously operating reference stations (CORS): the National CORS network and the Cooperative CORS network. Each CORS site provides Global Positioning System carrier phase and code range measurements in support of 3-dimensional positioning activities throughout the United States and its territories.
Surveyors, GIS/LIS professionals, engineers, scientists, and others can apply CORS data to position points at which GPS data have been collected. The CORS system enables positioning accuracies that approach a few centimeters relative to the National Spatial Reference System, both horizontally and vertically.
National Geodetic Survey: Online Positioning User Service
The National Geodetic Survey operates the On-line Positioning User Service (OPUS) as a means to provide GPS users easier access to the National Spatial Reference System (NSRS). OPUS allows users to submit their GPS data files to NGS where the data will be processed to determine a position using NGS computers and software. Each data file that is submitted will be processed with respect to 3 CORS sites. The sites selected may not be the nearest to your site but are selected by distance, # of obs, site stability, etc. The position for the user's data is then reported via email in both ITRF and NAD83 coordinates as well as UTM, USNG and State Plane Coordinates (SPC) northing and easting.