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Gridded Soil Survey Geographic Database (gSSURGO)

dataset
posted on 2023-11-30, 07:23 authored by USDA Natural Resources Conservation Service

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 State-wide extents, and adding a State-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 State-wide extent. The raster map data have a 10 meter cell size that approximates the vector polygons in an Albers Equal Area projection. 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.


Resources in this dataset:

Funding

Natural Resources Conservation Service

History

Data contact name

Soils Hotline

Data contact email

soilshotline@usda.gov

Publisher

Natural Resources Conservation Service, United States Department of Agriculture

Theme

  • Not specified

Geographic Coverage

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Geographic location - description

United States of America, Puerto Rico, U.S. Virgin Islands, Northern Mariana Islands, Guam, Republic of the Marshall Islands, Republic of Palau, American Samoa, Federated States of Micronesia

ISO Topic Category

  • environment
  • geoscientificInformation
  • imageryBaseMapsEarthCover

National Agricultural Library Thesaurus terms

databases; soil; soil surveys

OMB Bureau Code

  • 005:53 - Natural Resources Conservation Service

OMB Program Code

  • 005:027 - Conservation Operations

Pending citation

  • No

Public Access Level

  • Public

Preferred dataset citation

Soil Survey Staff. Gridded Soil Survey Geographic (gSSURGO) Database for State name. United States Department of Agriculture, Natural Resources Conservation Service. Available online at http://datagateway.nrcs.usda.gov/. month, day, year (FYyear official release).