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Gridded National Soil Survey Geographic Database (gNATSGO)

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Description
Overview Slides (PDF; 2.18 MB)
Download gNATSGO Databases
ArcTools for Working with gNATSGO
Metadata
Technical Information
Recommended Data Citations
 

Quick Start

1. Read Overview Slides

2. Download gNATSGO Database
Download gNATSGO for CONUSDownload gNATSGO for StatesDownload buttons for gNATSGO.Download gNATSGO for CONUSDownload gNATSGO for States





3. Get Soil Data Development Toolbox

gNATSGO icon.


Description

The gridded National Soil Survey Geographic Database (gNATSGO) is a USDA-NRCS Soil & Plant Science Division (SPSD) composite database that provides complete coverage of the best available soils information for all areas of the United States and Island Territories. It was created by combining data from the Soil Survey Geographic Database (SSURGO), State Soil Geographic Database (STATSGO2), and Raster Soil Survey Databases (RSS) into a single seamless ESRI file geodatabase.

The gNATSGO database contains a 10-meter raster of the soil map units and 70 related tables of soil properties and interpretations. It is designed to work with the SPSD gSSURGO ArcTools. Users can create full coverage thematic maps and grids of soil properties and interpretations for large geographic areas, such as the extent of a State or the conterminous United States.

SSURGO is the SPSD flagship soils database that has over 100 years of field-validated detailed soil mapping data. SSURGO contains soils information for more than 90 percent of the United States and island territories, but unmapped land remains. Click here for the current completion status of SSURGO mapping. STATSGO2 is a general soil map that has soils data for all of the United States and island territories, but the data is not as detailed as the SSURGO data. The Raster Soil Surveys (RSSs) are the next generation soil survey databases developed using advanced digital soil mapping methods.

The first version of gNATSGO was created in 2019. It is composed primarily of SSURGO data, but STATSGO2 data was used to fill in the gaps. Three RSSs have been published as of 2019. These were merged into the gNATSGO after combining the SSURGO and STATSGO2 data. The extent of RSS is expected to increase in the coming years.

Figure 1 shows the distribution of SSURGO, STATSGO2, and RSSs in gNATSGO for the conterminous United States.

Figure 1. Source of soils information in the 2019 gNATSGO database.





















 

Limited SSURGO data is available for Alaska because of the size and difficulty in accessing many areas of the State. Figure 2 shows the distribution for Alaska.

Figure 2. Source of soils information in the 2019 gNATSGO database in the State of Alaska.





















 

The State of Hawaii and all island territories, except Puerto Rico, have complete coverage in SSURGO.

Notes

  • The SPSD refreshes all published soil databases annually. gNATSGO will be included in the refresh cycle, which will provide a new up-to-date version of the database each year.
  • gNATSGO is an ESRI file geodatabase.
  • The soil map units are delivered only as a 10-meter raster version and are uniquely identified by the mukey, which is included in the attribute table. No vectorized version of the soil map units is included in gNATSGO.
  • The database has 70 tables that contain soil attributes, and relationship classes are built into the database to define relationships among tables.
  • The raster can be joined to the Mapunit and Muaggatt tables in the MUKEY field.
  • The database contains a feature class called SAPOLYGON. The “source” field in this feature class indicates whether the data was derived from SSURGO, STATSGO2, or an RSS.
  • A gNATSGO database was created for the conterminous United States and for each state or island territory that does not have complete coverage in SSURGO or has a published RSS.
  • If you encounter an ArcMap error when working with a gNATSGO dataset that reads “The number of unique values exceeds the limit” try increasing the maximum number of unique values to render in your Raster ArcMap Options.  Specific instructions can be obtained here: https://support.esri.com/en/technical-article/000010117


Download gNATSGO Databases

Download gNATSGO for CONUSDownload gNATSGO for StatesDownload buttons for gNATSGO.Download gNATSGO for CONUSDownload gNATSGO for States






Click on the links above to directly download the gridded National Soil Survey Geographic Database (gNATSGO) zip files from the USDA-NRCS Geospatial Gateway. The databases are available for some individual states and island territories and for the conterminous United States. For the individual states and island territories, gNATSGO was created only for those that have incomplete data in the Soil Survey Geographic Database (SSURGO) or have a raster soil survey (RSS). Download gSSURGO to obtain gridded soils data for the states that have complete SSURGO coverage and do not have an RSS.


ArcTools for Working with gNATSGO

SPSD created a custom set of ArcTools designed to work with gridded soils information called the “Soil Data Development Toolbox.” These tools originally were designed to work with gSSURGO; but they work with both gNATSGO and gSSURGO because the databases have nearly identical schemas.

Click on the following links to download the tools, user guide, and quick start guide.

Soil Data Development Toolbox (ZIP; 2018-10-29; 3.24 MB)
Soil Data Development Toolbox - User Guide 5.0 (PDF; 1.76 MB)
gSSURGO Mapping Quick Guide (PDF; 2.82 MB)

Most customers will only need to use the Create Soil Map tool, which is in the gSSURGO Mapping Toolset.

Screen capture showing Create Soil Map under gSSURGO Mapping Toolset.






 

The Create Soil Map tool replicates the functionality of Web Soil Survey and Soil Data Viewer. It allows users to create on-demand thematic maps of soil properties or interpretations with controls for aggregation method and depth.


Metadata

Metadata is available for each table, grid, and feature class in the file geodatabase. 

gNATSGO has a schema that is very similar to that of SSURGO and STATSGO2. Click on the following link for information about the gNATSGO database tables and columns.


Technical Information

To obtain technical information about the use of soils data, please contact the NRCS State Soil Scientist in your state or the Soils Hotline Staff at (402) 437-5378 (Steve Speidel) or (402) 437-5379 (Tammy Cheever).


Recommended Data Citations

The Citation for gNATSGO

State Tile

Soil Survey Staff. Gridded National Soil Survey Geographic (gNATSGO) Database for State name. United States Department of Agriculture, Natural Resources Conservation Service. Available online at https://nrcs.app.box.com/v/soils. Month, day, year (FYyear official release).

Conterminous U.S. Tile

Soil Survey Staff. Gridded National Soil Survey Geographic (gNATSGO) Database for the Conterminous United States. United States Department of Agriculture, Natural Resources Conservation Service. Available online at https://nrcs.app.box.com/v/soils. Month, day, year (FYyear official release).
 

Citation Examples

The following examples are for the FY2019 gNATSGO dataset for the State of Texas. Such citations should appear in the reference section of your document.

State Tile

Soil Survey Staff. The Gridded National Soil Survey Geographic (gNATSGO) Database for Texas. United States Department of Agriculture, Natural Resources Conservation Service. Available online at https://nrcs.app.box.com/v/soils. August 9, 2019 (FY2019 official release).

Conterminous U.S. Tile

Soil Survey Staff. Gridded National Soil Survey Geographic (gNATSGO) Database for the Conterminous United States. United States Department of Agriculture, Natural Resources Conservation Service. Available online at https://nrcs.app.box.com/v/soils. August 9, 2019 (FY2019 official release).