b891ca64-4cd4-4efd-a7ca-b386e98d52e8 eng Jippe Hoogeveen FAO-UN - AGLW Viale delle Terme di Caracalla Rome 00100 Italy jippe.hoogeveen@fao.org 2012-11-12T14:54:33 ISO 19115:2003/19139 1.0 Rivers of Africa (Derived from HydroSHEDS) 2010-06-04T00:00:00 First edition. 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. The stream network dataset consists of the following information:- unique arc identifier (ARCID), the origin node of each arc in the network (FROM_NODE), the destination of each arc in the network (TO_NODE), the Strahler stream order of each arc in the network (STRAHLER), numerical code and name of the major basin that the arc falls within (MAJ_BAS and MAJ_NAME); - area of the major basin in square km that the arc falls within (MAJ_AREA); - numerical code and name of the sub-basin that the arc falls within (SUB_BAS and SUB_NAME); - area of the sub-basin in square km that the arc falls within (SUB_AREA); - numerical code of the sub-basin towards which the sub-basin flows that the arc falls within (TO_SUBBAS) (the codes -888 and -999 have been assigned respectively to internal sub-basins and to sub-basins draining into the sea). To provide a river network with annotated attributes. The dataset is developed as part of an assessment of water resources in Africa. It is also our intent to eventually include an "Intermittent" or "Perennial" value for each arc in the dataset. AFRICARIV_temp.png large_thumbnail png AFRICARIV_small_s.png thumbnail png rivers river basins water resources hydrology AQUASTAT fishery AQUAMAPS_rivers Africa 5000000 eng geoscientificInformation -17.3 51.1 -34.6 38.2 This dataset is developed as part of a GIS-based information system on water resources for the African continent. It has been published in the framework of the AQUASTAT - programme of the Land and Water Division of the Food and Agriculture Organization of the United Nations. http://www.fao.org/geonetwork/srv/en/resources.get?id=37333&fname=rivers_africa.zip&access=private WWW:DOWNLOAD-1.0-http--download rivers_africa.zip Rivers in Africa - derived from HydroSHEDS http://data.fao.org/maps/wms?styles=aquamaps_rivers_africa_37333_style OGC:WMS-1.1.1-http-get-map AQUAMAPS:rivers_africa_37333 Rivers of Africa derived from Hydrosheds http://www.fao.org:80/geonetwork?uuid=e54e2014-d23b-402b-8e73-c827628d17f4 WWW:LINK-1.0-http--link Hydrological basins in Africa - derived from HydroSHEDS WWW:LINK-1.0-http--link Rivers in North America - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=7538cb25-7b2e-4030-8454-7197a49af48a WWW:LINK-1.0-http--link Rivers in Central America - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=12d7d96a-b0ea-4aea-aedc-b9c9a80cab7f WWW:LINK-1.0-http--link Rivers in South America - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=e0243940-e5d9-487c-8102-45180cf1a99f WWW:LINK-1.0-http--link Rivers in Europe - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=337ebe2b-318c-4c17-9b40-c07ab03e9019 WWW:LINK-1.0-http--link Rivers in the Near East - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=dc2a5121-0b32-482b-bd9b-64f7a414fa0d WWW:LINK-1.0-http--link Rivers in Southeast Asia - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=6a53d768-1e20-46ea-92a8-c4040286057d WWW:LINK-1.0-http--link Rivers in Australia and New Zealand - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=9c52166f-2a8e-465d-a14a-f230f38d63f9 WWW:LINK-1.0-http--link Hydrological basins in North America - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=bc9139e6-ccc9-4ded-a0c4-93b91cb54dde WWW:LINK-1.0-http--link Hydrological basins in Central America - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=d47ba28e-31be-470d-81cf-ad3d5594fafd WWW:LINK-1.0-http--link Hydrological basins in South America - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=1849e279-67bd-4e6f-a789-9918925a11a1 WWW:LINK-1.0-http--link Hydrological basins in Europe - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=7ae00a40-642b-4637-b1d3-ffacb13360db WWW:LINK-1.0-http--link Hydrological basins in the Near East - derived from HydroSHEDS - http://www.fao.org:80/geonetwork?uuid=ee616dc4-3118-4d67-ba05-6e93dd3e962f WWW:LINK-1.0-http--link Hydrological basins in Southeast Asia - derived from HydroSHEDS http://www.fao.org:80/geonetwork?uuid=a1a0e9ee-5062-4950-a6b9-fdd2284b2607 WWW:LINK-1.0-http--link Hydrological basins in Australia and New Zealand - derived from HydroSHEDS http://www.worldwildlife.org/hydrosheds WWW:LINK-1.0-http--link For general information regarding the HydroSHEDS data product http://hydrosheds.cr.usgs.gov WWW:LINK-1.0-http--link For HydroSHEDS dataset download and technical information 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). Last Updated 2009-11-04T00:00:00