Soil properties from the USDA NRCS gNATSGO database as an analysis-ready Icechunk Zarr store. 12 regional groups (CONUS, Alaska, Hawaii, Puerto Rico, and Pacific territories) on their native 30 m grids. Depth-indexed soil properties (available water storage, organic carbon, sand/silt/clay, bulk density, ksat, pH, …) on an 11-interval depth dimension, plus 2-D map-unit properties (mukey, NCCPI, root zone, terrain, surface texture). Values are flattened from the release's relational tables by documented, versioned aggregations; units, algorithms, CRS, and provenance are embedded as metadata. Sharded Zarr v3 layout: field-scale queries fetch tens of KB. US public domain.