National Geochemical Database: Soil

Geochemistry of soils from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.

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ngdbsoil.kml (uncompressed 65 Mbytes)

ngdbsoil.kmz (compressed 2.4 Mbytes)

Show in your GIS using OGC web services:

https://mrdata.usgs.gov/services/ngdbsoil (WMS, version 1.3.0)

https://mrdata.usgs.gov/services/wfs/ngdbsoil (WFS, version 1.1.0)

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Get the entire data set:

ngdbsoil-csv.zip (Shapefile with a URL to the full report online, all attributes as included CSV files 54 MB zip expands to 482 MB)

Documentation

Metadata:

About the database tables and fields

All database fields, by category

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