US Geological Survey

United States Geological Survey

The United States Geological Survey offers several types of data that are used for analyzing geological phenomenon. The USGS website offers Digital Elevation Modules (DEM), Digital Raster Graphics, Digital Line Graphics, and Digital Orthoqudrangels that can be downloaded and used like a map. There are also National Hydrology data sets and National Elevation data sets that provide detailed depictions of elevation and water features throughout the country. The website also has a National data set for land use and land cover, which describe the types of natural or manmade elements that are covering the land.

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