Abstract:The rivers of Africa are derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The drainage direction layer was created from NASA's Shuttle Radar Topographic Mission (SRTM) 15-second Digital Elevation Model (DEM). The raster stream network was determined by using the HydroSHEDS
flow accumulation grid, with a threshold of 1500 upstream cells.
Lineage: The linework of the map was obtained by converting the stream network to a feature dataset with the Hydrology toolset in ESRI ArcGIS. The Flow Direction and Stream Order grids were derived from hydrologically corrected elevation data with a resolution of 15 arc-seconds. The elevation dataset was part of a mapping product, HydroSHEDS, developed by the Conservation Science Program of World Wildlife Fund. Original input data had been obtained during NASA's Shuttle
Radar Topography Mission (SRTM).
Geographic area name: AfricaGeographic extent
Spatial data structure of the dataset
Spatial data type (Format): ESRI Shapefile
Spatial reference of the dataset
Geographic coordinate system: WGS 1984
Availability and distribution of the dataset
Organisation: FAO - UN
Distribution media: Online
Distribution format: ESRI Shapefile, Digital map (in vector or shapefile)