Is there a downloadable file of CONUS mapunit polygons?

[kevinwolz]

Currently I download mapunit polygons using SDA_spatialQuery(what = "mupolygon"), but I'm wondering if, similar to the downloadable file of the gSSURGO mapunit raster, there is a downloadable file of CONUS mapunit polygons.

[brownag]

@kevinwolz You can use the MUPOLYGON layer from either the ESRI File Geodatabase or the SSURGO Portal Geopackage for CONUS. e.g. st_read("your/path/ssurgoportal/database.gpkg", "MUPOLYGON")

For survey area boundaries see layer SAPOLYGON.

You can get the CONUS and state-level gSSURGO and SSURGO Portal data on Box. https://nrcs.app.box.com/s/w0gtf7ooxqfcd0cgfht5zprcmc8qvu0i & https://nrcs.app.box.com/v/soils/folder/17971946225.

At this time there is no standalone download for just the vector data analogous to the GeoTIFF MUKEY grid, you need to download the associated tabular info with the spatial. But I believe you have already downloaded the "all SSURGO" dataset, so it should be as simple as extracting and saving the mapunit polygons as a separate layer if needed.

I hope the new 2023 file geodatabases should be up soon fingers crossed. We have state-level gSSURGO but not CONUS or MUKEY grids.