National – Canada
Canadian GIS & Geomatics – Free Data – Includes sources for Open Geospatial Data, fee based geospatial data, and online web mapping applications.
Geography Network Canada – Online resource for finding and sharing geographic content, including maps and data, from many of Canada’s leading providers.
Canada3D – A Digital Elevation Model (DEM) covering all of Canada.
Natural Heritage Information Centre – Access data and information about Ontario’s species of conservation concern, plant communities and wildlife concentration areas.
Ontario Base Map (OBM) – Interactive Mapping and Download – Ontario Topographic map data at a scale of 1:10,000. Download formats include ESRI Shapefile (.shp), AutoCAD (.dwg and .dxf) and more…
Great Lakes Information Network (GLIN) – A centralized location to discover, publish, and acquire geospatial data for areas within the Great Lakes region.
Geology Ontario – OGS Earth – OGSEarth provides geoscience data, collected by the Mines and Minerals division including mining claims, geology, administrative boundaries and abandoned mines.
AgMaps Geographic Information Portal (Ontario) – Agricultural Information Atlas
Grand River Information Network (GRIN) – Grand River watershed geospatial data download.
United States Geospatial Data
Federal Geographic Data Committee (FGDC) – National Spatial Data Infrastructure (NSDI)
- The GeoPlatform Portal – Provides ‘one-stop’ access to all registered geographic information and related online access services within the United States.
- data.gov – Data.gov provides the ability to search approved data from hundreds of sources including federal government, cities, counties, states, and universities.
- GEOSS Portal – Provides access to global Earth Observation Data.
United States Census Bureau – Maps & Data – Access to geographic data and products such as the TIGER/Line Shapefiles, KMLs, TIGERweb, cartographic boundary files, geographic relationship files, and reference and thematic maps
United States Geological Survey (USGS) Maps and Imagery Download – Access to maps, data and imagery via various USGS portals and collections.
USGS Historical Topographic Map Explorer
Libre Map Project provides map and GIS data by US State.
National Historical Geographic Information System (NHGIS) – Provides aggregate Census data and GIS-compatible boundary files for the United States between 1790 and 2012.
Cadmapper– Transforms data from public sources such as OpenStreetMap, NASA, and USGS into neatly organized CAD files. It’s free for areas up to 1 km2
Digital Elevation Data – Digital elevation models for various parts of the world.
DIVA-GIS – Global country level data including administrative boundaries, roads, railroads, altitude, land cover, and population density.
Harmonized World Soils Database (HWSD) – A global database, framed within a Geographic Information System (GIS), that contains up-to-date information on world soil resources.
Natural Earth – Public domain vector and raster map dataset available at 1:10m, 1:50m, and 1:110 million scales.
WorldClim – A set of global climate layers with a spatial resolution of 1 sq km.
Free GIS Remote Sensing, Spatial and Hyrology Data – A blog that provides information about websites that provide free GIS, remote sensing, spatial and hydrological data.
Central Intelligence Agency (CIA) World DataBank II – A collection of world map data, consisting of vector descriptions of land outlines, rivers, and political boundaries.
Global Biodiversity Information Facility (GBIF) – Portal providing access to global biodiversity data.
China Historical GIS (CHGIS) – Harvard Yenching Institute – Database of populated places and historical administrative units for the period of Chinese history between 222 BCE and 1911 CE.
WHO Global Urban Ambient Air Pollution Database – Database of air pollution in urban areas covering 3000 cities in 130 countries.