HydroshedsHydroBASINS represents a series of vectorized polygon layers that depict sub-basin boundaries at a global scale. The goal of this product is to provide a seamless global coverage of consistently sized and hierarchically nested sub-basins at different scales (from tens to millions of square kilometers), supported by a coding scheme that allows for analysis of catchment topology such as up- and downstream connectivity. HydroBASINS has been extracted from the gridded HydroSHEDS core layers at 15 arc-second resolution. More info: [HydroBASINS](https://www.hydrosheds.org/products/hydrobasins)africa-hydrobasin-vectorized-polygon-layers-of-hydrographic-basinsHumanitarian Data ExchangePublicAfrica - HydroBasin - vectorized polygon layers of hydrographic basinsDatasetsEthiopiaWorld2025-03-02