Download Portals

Much of the data accessed by desktop GIS users resides on local networks and local hard drives. But how does externally-created data get to local storage devices? Often it comes from "download portals" which are websites specifically designed for getting spatial databases from publisher to user. The sites listed below provide download access to a variety of potentially useful data.

 

Canada Spatial Databases

GeoGratis is the data distribution program of Natural Resources Canada. They host a family of useful download portals. The link below will take you to a directory. http://geogratis.cgdi.gc.ca/geogratis/en/download/index.html.

Michigan Spatial Databases

MI Geographic Data Library includes a suite of download portals featuring natural resources data and administrative boundary databases. The link below will take you to a directory.
http://www.mcgi.state.mi.us/mgdl/.

Wisconsin Spatial Databases

WisconsinView.org is a download portal featuring othoimagery and satellite scenes specific to Wisconsin.
http://www.wisconsinview.org/

Outagamie County Land Information (OLI) is a download portal featuring selected databases from the County's geographic information system including 2010 orthoimagery.
http://www.co.outagamie.wi.us/planning/OLI/LandInformation/DataDownload.html

US Spatial Databases

Geospatial Data Gateway is a download portal hosted by the Natural Resources Conservation Service (NRCS). Products include:
• Watershed Boundary Dataset (hydrologic units)
• Scanned topographic maps (DRGs)
• National Elevation Dataset (NED)
• Orthophotos from the National Agriculture Imagery Program (NAIP) and its predecessors
• Soil surveys (SSURGO and STATSGO)
http://datagateway.nrcs.usda.gov/

Soil Data Mart is a download portal hosted by the Natural Resources Conservation Service (NRCS). It's an alternative source for soil data. http://soildatamart.nrcs.usda.gov/

FSGeodata Clearinghouse is a directory to download portals hosted by the US Forest Service. Products include Forest Type and Forest Biomass Datasets and State and Private Forestry Assessment data. http://svinetfc4.fs.fed.us/clearinghouse/index.html

The National Map Viewer is a general purpose data viewer and download portal hosted by the US Geological Survey. http://viewer.nationalmap.gov/viewer/.

World Spatial Databases

USGS Global Visualization Viewer (GLOVIS) is a data viewer and download portal .that provides access to several large libraries of satellite imagery. THIS IS A VERY IMPORTANT RESOURCE http://glovis.usgs.gov/.

Columbia University's Earth Insitute hosts a family of download portals mostly featuring environmental and socio-economic data. Some of the databases available on these servers are not found anywhere else, at least to our knowledge. The link below will take you to a directory. http://www.ciesin.columbia.edu/download_data.html