Geographic Information Systems  Tags: gis geographic_information_systems maps geospatial data  

Your One Stop for Finding and Using Geographic Data

TIGER (Topologically Integrated Geographic Encoding and Referencing) refers to the system and digital data base developed at the Census Bureau to support its mapping needs for the Decennial Census and other Bureau programs.

GIS users can download Census 2000 TIGER/Line Data in shapefile format for an area of interest. Download by county.

The National Map Seamless Server is the ultimate location to explore and retrieve data. U.S. Geological Survey (USGS) and the EROS Data Center (EDC) are committed to providing access to geospatial data through The National Map.

Source for population, housing, economic, and geographic data from Census 2000, the 1990 Decennial Census, the 1997 and 2002 Economic Censuses, the American Community Survey, the Population Estimates Program, and the Annual Survey of Manufactures.

The raw data we use to generate maps can be downloaded for free. Vector files are available in Shapefile and SDTS-TVP formats. National Atlas geostatistical data are in DBF format. Our images are GeoTIFF files.

Data repository developed jointly by the U.S. Department of Agriculture and the Natural Resources Conservation Service. The Geospatial Data Gateway
provides One Stop Shopping for natural resources or environmental data.

WorldClim is a set of global climate layers (climate grids) with a spatial resolution of a square kilometer. They can be used for mapping and spatial modeling in a GIS or other computer program.

CIESIN's mission is to provide access to and enhance the use of information worldwide, advancing understanding of human interactions in the environment and serving the needs of science and public and private decision making.

The CGIAR-CSI GeoPortal is able to provide SRTM 90m Digital Elevation Data for the entire world.

Daymet is a model that generates daily surfaces of temperature, precipitation, humidity, and radiation over large regions of complex terrain.

The Toxics Release Inventory (TRI) is a publicly available EPA database that contains information on toxic chemical releases and other waste management activities reported annually by certain covered industry groups as well as federal facilities.

Data grids in ArcInfo ASCII format are available for all base climate parameters for the period 1895-Present. Use the data in your own GIS application to perform your own analysis or calculations.

Bibliography developed in Fall 2006

The NSIDC supports research into our world's frozen realms: the snow, ice, glacier, frozen ground, and climate interactions that make up Earth's cryosphere.

Explore state and county level demographics and generate maps of selected data.

Provides aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2000.

Social Explorer provides easy access to demographic information about the United States, from 1940 to 2000.