Data Warehouses

Sunday May 21st 2006
Filed Under Data 

Resources to web sites that host large amounts of datasets both at the nationwide (United States) and global levels. Most of the data is available for free or for little cost.

Directions Data Center
This site offers free mapping data, in a variety of software formats.

EROS Data Center
The USGS EROS Data Center houses millions of aerial photographs of the United States, as well as images from several series of satellites covering the entire Earth.

Federal Communications Commission Datasets
Mostly MapInfo format vector datasets available for free download. Data examples include census data, FM Broadcast zones, and Guam mapping areas.

GEO-DATA Explorer (GEODE)
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.Geography Network
The Geography Network provides access to a large collection of geographic data from many of the world’s leading data publishers.

GIS Data Depot
Online inventory of more than a terrabyte of spatial databases spanning the entire globe. Free downloads or create customs CDs.

MapMart
Commercial data service. You can access free USGS DRGs.

National Atlas
National Atlas of the United States has nationwide datasets to view and download as ArcView shapefiles.

USGS Geographic Data Download
Access to a wide variety of public domain data from USGS at a variety of scales. This page also contains information about converting SDTS and other formats to GIS compatible types.





Read More

  • Data and GIS Resources
  • Data Dictionary
  • Shapefile Connection
  • Making Sense
  • GIS Software Applications

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