GCN10: Global 10m Curve Number dataset

GCN10 is a global, open, 10 m raster dataset of NRCS/SCS Curve Number (CN) values designed for runoff modeling and watershed analysis. The dataset integrates ESA WorldCover 2021 land cover at 10 m resolution with HySOGs hydrologic soil groups to derive CN rasters for standard land-cover/soil combinations, distributed as Cloud-Optimized GeoTIFF tiles. Data are served through an online STAC catalog (https://gcn10-catalog.edacnm.org/) and API (https://gcn10.edacnm.org/) for search and access, with complete metadata describing spatial reference, nodata handling, and tiling/indexing to support reproducible, large-scale hydrologic workflows.