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usgs.gov
https://www.usgs.gov/the-national-map-data-deliver…
GIS Data Download | U.S. Geological Survey - USGS.gov
Access current and historical imagery as well as other data through the USGS Earth Resources Observation and Science (EROS) search and download application. Training videos are available.
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gisgeography.com
https://gisgeography.com/best-free-gis-data-source…
10 Free GIS Data Sources: Best Global Raster and Vector Datasets
Turbo-charge your search for free GIS data with this list of 10 free, downloadable global GIS datasets from highly reputable sources - vector and raster.
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esri.com
https://www.esri.com/en-us/what-is-gis/overview
What is GIS? | Geographic Information System Mapping Technology - Esri
GIS connects data to a map, integrating location data (where things are) with all types of descriptive information (what things are like there). This provides a foundation for mapping and analysis that is used in science and almost every industry.
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geographicbook.com
https://geographicbook.com/gis-database/
GIS Database - Geographic Book
In the realm of Geographic Information Systems (GIS), the foundation of spatial data management lies within GIS databases. These databases serve as the backbone for storing, organizing, and analyzing various types of spatial and attribute data.
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rtwilson.com
https://freegisdata.rtwilson.com/
Free GIS Datasets - Categorised List
This page contains a categorised list of links to over 500 sites providing freely available geographic datasets - all ready for loading into a Geographic Information System.
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mit.edu
https://libguides.mit.edu/gis/unitedstates
Geographic Information Systems (GIS): Data for the US (nationwide)
Here you will find data, tools, and resources to conduct research, develop web and mobile applications, design data visualizations, and more. This set of data includes many layers for the world, such as country boundaries, UTM zones, water, roads, railroads, airports, major cities, topography/bathymetry, and a nighttime view.
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sciencedirect.com
https://www.sciencedirect.com/topics/computer-scie…
GIS Database - an overview | ScienceDirect Topics
A GIS database is a collection of spatial data that can be used for various purposes such as map production and market analysis, by providing the capability to enter, edit, retrieve, analyze, map, and visualize spatial data.
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spatialpost.com
https://www.spatialpost.com/best-geospatial-databa…
11 Best Geospatial Database Systems: An In-Depth Comparison
Explore the best geospatial databases for accurate and efficient spatial data management. Find the perfect solution for your needs.
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maplibrary.org
https://www.maplibrary.org/879/best-gis-data-sourc…
10 Best GIS Data Sources for Enriching Maps That Improve Precision
Discover top GIS data sources to enhance your mapping projects, from free options like OSM and USGS to paid platforms like Esri and Mapbox for enriched insights.
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usgs.gov
https://www.usgs.gov/tools/national-map-viewer
The National Map Viewer | U.S. Geological Survey - USGS.gov
Use The National Map Viewer to explore GIS data, see availability of USGS topographic maps, and create your own web map.