Below are a sample of just a few of the sources of data available on the web. The sources you use will vary based on the region and topic of interest.
Global | United States |
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Some other sources of data are:
There are also a few web sites of links to sites to find GIS data such as the new CPH GIS Data Archive. The challenge is to find that one web site that has the data you are interested in.
Natural Earth provides vector data for cities, countries, etc. You can obtain data on economy or social issues from the United Nations. Access to CIA data will provide national histories. The EROS Data Center is a resource for satellite imagery.
The National Atlas was a great resource for vector data on counties, zip codes, census, but has been shut down and we are supposed to be using National Map instead. NASA provides raw satellite data and metadata. You can obtain stream gauge data from USGS, as well as a wide range of imagery from Earth Explorer. Weather and marine data can be obtained from NOAA.
Other US data sources are:
National Map was intended to be the main point for distribution of US governmental data, but it has yet to live up to expectations. Data access is intermittent at best, but they plan on making it simpler in the future.
Data from California can be obtained from:
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