Soil Hydrologic Group (USDA)

The gridded National Soil Survey Geographic Database (gNATSGO) is a comprehensive dataset that combines the Soil Survey Geographic Database (SSURGO), State Soil Geographic Database (STATSGO2), and Raster Soil Survey Databases (RSS) into a single, gridded dataset. It is maintained by the United States Department of Agriculture (USDA) and Natural Resources Conservation Service (NRCS). It provides detailed information about soil properties and classifications across the United States.