Gridded Soil Survey Geographic (gSSURGO-30) Database for the Conterminous United States - 30 meter

Metadata Updated: February 21, 2020

This dataset is called the Gridded SSURGO (gSSURGO) Database and is derived from the Soil Survey Geographic (SSURGO) Database. SSURGO is generally the most detailed level of soil geographic data developed by the National Cooperative Soil Survey (NCSS) in accordance with NCSS mapping standards. The tabular data represent the soil attributes, and are derived from properties and characteristics stored in the National Soil Information System (NASIS). The gSSURGO data were prepared by merging traditional SSURGO digital vector map and tabular data into a Conterminous US-wide extent, and adding a Conterminous US-wide gridded map layer derived from the vector, plus a new value added look up (valu) table containing "ready to map" attributes. The gridded map layer is offered in an ArcGIS file geodatabase raster format.

The raster and vector map data have a Conterminous US-wide extent. The raster map data have a 30 meter cell size. Each cell (and polygon) is linked to a map unit identifier called the map unit key. A unique map unit key is used to link to raster cells and polygons to attribute tables, including the new value added look up (valu) table that contains additional derived data.

The value added look up (valu) table contains attribute data summarized to the map unit level using best practice generalization methods intended to meet the needs of most users. The generalization methods include map unit component weighted averages and percent of the map unit meeting a given criteria.

The Gridded SSURGO dataset was created for use in national, regional, and state-wide resource planning and analysis of soils data. The raster map layer data can be readily combined with other national, regional, and local raster layers, e.g., National Land Cover Database (NLCD), the National Agricultural Statistics Service (NASS) Crop Data Layer, or the National Elevation Dataset (NED).

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons CCZero

Downloads & Resources


Metadata Created Date February 21, 2020
Metadata Updated Date February 21, 2020
Data Update Frequency R/P1Y

Metadata Source

Harvested from USDA JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date February 21, 2020
Metadata Updated Date February 21, 2020
Publisher NRCS
Unique Identifier NRCS0095
Public Access Level public
Data Update Frequency R/P1Y
Bureau Code 005:53
Metadata Context
Schema Version
Catalog Describedby
Harvest Object Id 82361eca-515b-45e9-8b87-257e16e56a35
Harvest Source Id 50ca39af-9ddb-466d-8cf3-84d67a204346
Harvest Source Title USDA JSON
Data Last Modified 2014-01-20
Program Code 005:027
Source Datajson Identifier True
Source Hash ee6914a0741528e8ba9016e2cf8ea4f84eb968d1
Source Schema Version 1.1

Didn't find what you're looking for? Suggest a dataset here.