The Scientific Committee on Antarctic Research (SCAR) Antarctic Digital Database (ADD) consists of geographic information layers including coastline, ice-shelf grounding line, rock outcrop, contour...

The Atlas of Historical County Boundaries presents in maps and text complete data about the creation and all subsequent changes (dated to the day) in the size, shape, and location of every county i...

Connects users to digital geospatial resources, including GIS datasets, Web services, and digitized historical maps from multiple data clearinghouses and library catalogs.

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 a...

The Central Africa Regional Program for the Environment (CARPE) is a USAID initiative aimed at promoting sustainable natural resource management in the Congo Basin. The Congo Basin forest is the se...

The U.S. Agency for International Development (USAID) Famine Early Warning Systems Network (FEWS NET) is an information system designed to identify problems in the food supply system that potential...

The USDA Forest Service Geodata Clearinghouse is an online collection of downloadable digital geospatial data. Included in this resource are the Land Status Record System Data (LSRS), a collection ...

Geo.Data.gov, part of the federal Data.gov initiative, currently provides access to over 400,000 geospatial datasets. Users can interact with the data via web mapping services and can download actu...

GeoCommons.com is a free service for public data and maps. It enables anyone in the world to quickly and easily share data, visualizations, and analysis. Geospatial data found here is largely crowd...

GeoData@Wisconsin provides direct download access to Wisconsin geospatial data collected and archived by the Robinson Map Library at UW-Madison. Datasets from state, county, and local government pr...

GeoGratis is a portal provided by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan) which provides geospatial data at no cost and without restrictions via your Web browser. The da...

GeoScience Australia's spatial information activities focus on providing key spatial information of Australia with an emphasis on response to rapid and slow onset hazards, the detection of change, ...

GetFacts, formerly WISSTAT, contains thousands of demographic and economic variables for the state of Wisconsin, its counties and smaller communitites. The sources of the data include the U.S. Cens...

The Global Land Cover Facility (GLCF) provides earth science data and products to help everyone to better understand global environmental systems. In particular, the GLCF develops and distributes r...

LandScan is a global population database that shows geographical distribution of population at one-kilometer resolution over an average 24 hour period. The LandScan algorithm uses spatial data and ...

Use The National Map Viewer and Download Platform to visualize, inspect, and download the most current topographic base map data and products for free. Managed by the United States Geological Surve...

The U.S. Fish and Wildlife Service is the principal Federal agency that provides information to the public on the extent and status of the Nation's wetlands. The agency has developed a series of to...

Natural Earth is a public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales. Featuring tightly integrated vector and raster data, with Natural Earth you can make a variety of v...

The Geospatial Data Gateway is a service made available through a close partnership between the three Service Center Agencies (SCA); Natural Resources Conservation Service (NRCS), Farm Service Agen...

Data and mapping tool for creating custom reports of data related to demographics, real estate, health, jobs, the environment, education and more.

Web-based mapping application that lets users create professional-quality thematic maps and reports using demographic, business, and marketing data.

Appropriate geo-referenced information on physical and socio-economic resources for agriculture in the broadest sense (including forestry and fisheries) is of substantial value in the analysis of e...

The U.S. Census Bureau's Topologically Integrated Geographic Encoding and Referencing System data (TIGER/Line) are the most detailed geospatial data files available for mapping census demographic s...

The USDA-National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a publicly available geospatial raster dataset showing crop-specific land cover classification that focuses pri...

Maps, records, and reports (including interpretations and recommendations produced by the WGNHS) provide basic data for resource, land-use, and environmental management. Digital datasets derived fr...

Since 2004, WisconsinView has made aerial photography and satellite imagery of Wisconsin available to the public for free over the web. As part of the AmericaView consortium, WisconsinView supports...