Global water data

This map provides a global representation of proportion of freshwater withdrawal for the Service sector (VS) over the total freshwater withdrawal (TWW) per major river basins for year 2018. The analysis is based on the national water withdrawal data available in AQUASTAT for year 2018. Here below the formula applied: VS_PERC = VS / TWW Where: VS = Freshwater withdrawal for the Service sector (million m3) TWW = Total freshwater withdrawal (million m3) VS _PERC = Proportion of the freshwater withdrawal for the Service over the total freshwater withdrawal (%) **Data publication:** 2022-03-11 **Contact points:** Resource Contact: [Riccardo Biancalani](mailto:riccardo.biancalani@fao.org) Resource Contact: [Michela Marinelli](mailto:michela.marinelli@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Resource constraints:** Creative Commons Attribution-NonCommercial-ShareAlike 3.0 IGO (CC BY-NC- SA 3.0 IGO) **Online resources:** Download: Proportion of freshwater withdrawal for the Service sector per major river basin (2018)

This dataset is derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The source of the drainage direction layer was the 15-second Digital Elevation Model (DEM) from NASA's Shuttle Radar Topographic Mission (SRTM). The raster stream network was determined by using the HydroSHEDS flow accumulation grid, with a threshold of about 1000 km² upstream area. The stream network dataset consists of the following information: 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). The attributes table now includes a field named "Regime" with tentative classification of perennial ("P") and intermittent ("I") streams. **Data publication:** 2014-03-10 **Supplemental Information:** **Time coverage**: 2014 **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:jippe.hoogeveen@fao.org) Resource Contact: [Livia Peiser](mailto:livia.peiser@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** For technical information on the data source, please visite the HydroSHEDS official web site **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download - Major rivers of the world (ESRI shapefile) Download - Rivers data documentation (PDF) More updated information on HydroSHEDS 2025 Technical information on the data source

The rivers of Central America dataset is derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The source of the drainage direction layer was the 15-second Digital Elevation Model (DEM) from NASA's Shuttle Radar Topographic Mission (SRTM). The raster stream network was determined by using the HydroSHEDS flow accumulation grid, with a threshold of about 1000 km² upstream area. The stream network dataset consists of the following information: 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). The attributes table now includes a field named "Regime" with tentative classification of perennial ("P") and intermittent ("I") streams. **Data revision:** 2014-03-05 **Supplemental Information:** This dataset is developed as part of a GIS-based information system on water resources for the Central American 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. **Time coverage**: 2014 **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:Jippe.Hoogeveen@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data 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). **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download - Rivers of Central America (ESRI shapefile) Technical information on the data source More updated information on HydroSHEDS 2025

The rivers of North America dataset is derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The source of the drainage direction layer was the 15-second Digital Elevation Model (DEM) from NASA's Shuttle Radar Topographic Mission (SRTM). The raster stream network was determined by using the HydroSHEDS flow accumulation grid, with a threshold of about 1000 km² upstream area. 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). **Data revision:** 2014-03-05 **Supplemental Information:** This dataset is developed as part of a GIS-based information system on water resources for North America. 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. The attributes table now includes a field named "Regime" with tentative classification of perennial ("P") and intermittent ("I") streams. **Time coverage**: 2014 **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:jippe.hoogeveen@fao.org) Resource Contact: [Livia Peiser](mailto:livia.peiser@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data 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). **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download - Rivers of Nortn America (ESRI shapefile) Technical information on the data source More updated information on HydroSHEDS 2025

The rivers of South and East Asia dataset is derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The source of the drainage direction layer was the 15-second Digital Elevation Model (DEM) from NASA's Shuttle Radar Topographic Mission (SRTM). The raster stream network was determined by using the HydroSHEDS flow accumulation grid, with a threshold of about 1000 km² upstream area. The stream network dataset consists of the following information: - 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). The attributes table now includes a field named "Regime" with tentative classification of perennial ("P") and intermittent ("I") streams. **Data revision:** 2014-03-05 **Supplemental Information:** This dataset is developed as part of a GIS-based information system on water resources for South America. 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. **Time coverage**: 2014 **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:Jippe.Hoogeveen@fao.org) Resource Contact: [Livia Peiser](mailto:Livia.Peiser@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data 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). **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download - Rivers of South and East Asia (ESRI shapefile) Technical information on the data source More updated information on HydroSHEDS 2025

The rivers of Europe dataset is derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The source of the drainage direction layer was the 15-second Digital Elevation Model (DEM) from NASA's Shuttle Radar Topographic Mission (SRTM). The raster stream network was determined by using the HydroSHEDS flow accumulation grid, with a threshold of about 1000 km² upstream area. The stream network dataset consists of the following information: 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). The attributes table now includes a field named "Regime" with tentative classification of perennial ("P") and intermittent ("I") streams. **Data revision:** 2014-03-05 **Supplemental Information:** This dataset is developed as part of a GIS-based information system on water resources for the European 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. **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:Jippe.Hoogeveen@fao.org) Resource Contact: [Livia Peiser](mailto:Livia.Peiser@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data 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). **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download - Rivers of Europe (ESRI shapefile) Technical information on the data source More updated information on HydroSHEDS 2025

The rivers of the Middle East dataset is derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The source of the drainage direction layer was the 15-second Digital Elevation Model (DEM) from NASA's Shuttle Radar Topographic Mission (SRTM). The raster stream network was determined by using the HydroSHEDS flow accumulation grid, with a threshold of about 1000 km² upstream area. The stream network dataset consists of the following information: 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). The attributes table now includes a field named "Regime" with tentative classification of perennial ("P") and intermittent ("I") streams. **Data revision:** 2014-03-05 **Supplemental Information:** This dataset is developed as part of a GIS-based information system on water resources for the Middle East. 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. **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:Jippe.Hoogeveen@fao,org) Resource Contact: [Livia Peiser](mailto:Livia.Peiser@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data 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). **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download - Rivers of the Near East (ESRI shapefile) Technical information on the data source More updated information on HydroSHEDS 2025

Geo-referenced point database on dams in Africa. This dataset is described extensively on the AQUASTAT website at https://www.fao.org/aquastat/en/databases/dams. On this website, the dataset is also published in Excel to facilitate the publication of information on dams without geographical co-ordinates. It is accompanied by an explanatory document that provides specific information about the references used, and brief notes on the more complicated dams. The shapefile consists of the following information: a) GIS generated codes (FID); b) coordinates in decimal degrees (DDLONG, DDLAT); c) 'coordinates' broken down into eight codes (LATDIR with an N or an S for North or South, LATDEG, LATMIN and LATSEC for degrees, minutes and seconds latitude and LONGDIR with an W or E for West or East and LONGDEG, LONGMIN and LONGSEC for degrees minutes and seconds longitude); d) items described in details on the website, such as river basin and administrative unit; e) completion date; f) height; g)surface area; h) main purpose. This dataset served also as a basis for the Global reservoirs and dams (GRanD) database, which resulted in the article: Lehner, B., Reidy Liermann, C., Revenga, C., Vörösmarty, C., Fekete, B., Crouzet, P., Döll, P., Endejan, M., Frenken, K., Magome, J., Nilsson, C., Robertson, J., Rödel, R., Sindorf, N., Wisser, D. 2011. High resolution mapping of the world’s reservoirs and dams for sustainable river flow management. Published in the Journal Frontiers in Ecology and the Environment. **Data creation:** 2007-03-01 **Supplemental Information:** For a wider distribution and to support other projects at FAO this map is also distributed in a DVD as part of a publication entitled: Jenness, J., Dooley, J., Aguilar-Manjarrez, J., Riva, C. African Water Resource Database. GIS-based tools for inland aquatic resource management. 2. Technical manual and workbook. CIFA Technical Paper. No. 33, Part 2. Rome, FAO. 2007. 308 p. **Contact points:** Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** More information on this data on the AQUASTAT Website at https://www.fao.org/aquastat/en/databases/dams **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International license (CC-BY-4.0) **Online resources:** Download - Database of dams in Africa (Excel file) Geo-referenced dam databases on AQUASTAT website

Geo-referenced point database on dams in the Middle East. This dataset is described extensively on the AQUASTAT website at https://www.fao.org/aquastat/en/databases/dams. On this website, the dataset is also published in Excel to facilitate the publication of information on dams without geographical co-ordinates. It is accompanied by an explanatory document that provides specific information about the references used, and brief notes on the more complicated dams. The shapefile consists of the following information: a) GIS generated codes (FID); b) coordinates in decimal degrees (DDLONG, DDLAT); c) 'coordinates' broken down into eight codes (LATDIR with an N or an S for North or South, LATDEG, LATMIN and LATSEC for degrees, minutes and seconds latitude and LONGDIR with an W or E for West or East and LONGDEG, LONGMIN and LONGSEC for degrees minutes and seconds longitude); d) items described in details on the website, such as river basin and administrative unit; e)completion date; f) height; g)surface area; h) main purpose. **Data publication:** 2013-06-24 **Contact points:** Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** More information on this data on the AQUASTAT Website at https://www.fao.org/aquastat/en/databases/dams **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International license (CC-BY-4.0) **Online resources:** Download - Database of dams in the Middle East (Shapefile) Download - Database of dams in the Middle East (Excel file) Geo-referenced dam databases on AQUASTAT website

Geo-referenced point database on dams in Southern Eastern Asia. This dataset is described extensively on the AQUASTAT website at https://www.fao.org/aquastat/en/databases/dams. On this website, the dataset is also published in Excel to facilitate the publication of information on dams without geographical co-ordinates. It is accompanied by an explanatory document that provides specific information about the references used, and brief notes on the more complicated dams. For shapefile description, please see the READ ME in the zip file. **Data publication:** 2013-06-24 **Contact points:** Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** More information on this data on the AQUASTAT Website at https://www.fao.org/aquastat/en/databases/dams **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International license (CC-BY-4.0) **Online resources:** Download - Dams in the Southern Eastern Asia (ESRI shapefile) Geo-referenced dam databases on AQUASTAT website

**Warning** _Please note that this dataset should not be used as SDG 6.4.2 data._ Level of water stress by major basin calculated on the water consumption (reference year 2018). This map provides a global representation of the level of water stress spatially disaggregated by major river basin based on the freshwater consumption, which is the evapotranspired water in the agricultural sector and the non-returned quota for the industrial and service sectors. The water stress is calculated as the ratio between (a) the amount of freshwater resources consumed in the three economic sectors (Agriculture, Service and Industry) and (b) the total renewable freshwater resources after detracting the amount of water needed to support existing environmental services, also indicated as environmental flows. Statistical data on the return flow are not available in most cases, so a return flow of about 90% was assumed for the services and industrial sectors. For the agricultural sector, the incremental actual ET due to irrigation (estimated using the GlobWat model https://hess.copernicus.org/articles/19/3829/2015/) was used as a proxy. The formula applied is: WSc (%) = [ETinc-irr + (Vs * 0.1) + (Vm * 0.1)] / (TRWR-EF) * 100 Where: - ETinc-irr = incremental ET due to irrigation (from GLobwat) (million m3) - Vs = Water withdrawal for the Service sector (million m3) - Vm = Water withdrawal for the Industry (million m3) - TRWR = Total renewable freshwater resources - EF = Environmental Flow (million m3) Further details on the methodology applied can be found at: https://ucl.scienceopen.com/document/read?vid=18caef6a-0b8f-4e0c-a3e6-807e55d075a2. **Data publication:** 2022-03-11 **Contact points:** Resource Contact: [Riccardo Biancalani](mailto:riccardo.biancalani@fao.org) Resource Contact: [Michela Marinelli](mailto:michela.marinelli@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** Data quality information not available **Resource constraints:** Creative Commons Attribution 4.0 International (CC BY 4.0) **Online resources:** Download: Level of Water Stress by major river basin calculated on the water consumption

This dataset represents the world's major hydrological basins and respective sub-basins according to its hydrological characteristics. Source: WWF HydroSHEDS and Hydro1K More information on data source at https://data.apps.fao.org/catalog//iso/7707086d-af3c-41cc-8aa5-323d8609b2d1 Attribute table schema, field description: - MAJ_BAS - major basin code; - MAJ_NAME - major basin name; - MAJ_AREA - major basin area (square km); - SUB_BAS - sub-basin code; - SUB_NAME - sub-basin name; - SUB_AREA - sub-basin area (square km); - TO_BAS - downstream sub-basin code (towards which water flows) (-888 internal sub-basins and -999 draining to the sea) **Data revision:** 2022-06-02 **Supplemental Information:** Original datasets were developed as part of a GIS-based information system on water resources, published in the framework of the AQUASTAT - programme of the Land and Water Division of the Food and Agriculture Organization of the United Nations. **Contact points:** Metadata Contact: [FAO-Data](mailto:fao-data@fao.org) Resource Contact: [Nelson Ribeiro](mailto:nelson.rosasribeirofilho@fao.org) **Data lineage:** Based on the "FAO Land and Water Division Major hydrological basins of the world", the dataset was produced by merging the existing continental datasets and updating coding systems. Original data was obtained by delineating drainage basin boundaries from hydrologically corrected elevation data (WWF HydroSHEDS and Hydro1K). **Online resources:**

The rivers of Africa dataset is derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The source of the drainage direction layer was the 15-second Digital Elevation Model (DEM) from NASA's Shuttle Radar Topographic Mission (SRTM). The raster stream network was determined by using the HydroSHEDS flow accumulation grid, with a threshold of about 1000 km² upstream area. The stream network dataset consists of the following information: 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). The attributes table now includes a field named "Regime" with tentative classification of perennial ("P") and intermittent ("I") streams. **Data publication:** 2014-03-05 **Supplemental Information:** 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. **Time coverage**: 2014 **Contact points:** Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) Resource Contact: [Jippe Hoogeveen](mailto:Jippe.Hoogeveen@fao.org) Resource Contact: [Livia Peiser](mailto:Livia.Peiser@fao.org) **Data 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). **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download - Rivers of Africa (ESRI shapefile) Hydrological basins in Africa Download - Rivers data documentation (PDF) General information regarding the HydroSHEDS data product HydroSHEDS dataset download and technical information

Level of water stress (SDG 6.4.2) by major river basin (reference year 2018). This map provides a global representation of the level of water stress spatially disaggregated by major river basin. The indicator 6.4.2 is calculated as the ratio between (a) the amount of total freshwater resources withdrawn in the three economic sectors (Agriculture, Service and Industry) and (b) the total renewable freshwater resources after detracting the amount of water needed to support existing environmental services, also indicated as environmental flows. All the variables are expressed in million m3. The purpose of this indicator is to show the degree to which water resources are being exploited to meet the water demand and it measures the pressure on water resources at basin level. High values of water stress mean more water users are competing for limited water supplies. Low water stress indicates minimal potential impact on resource sustainability and on potential competition among users. Major river basins with an indicator's level lower than 25% have no water stress. Those basins with a water stress greater than 75% have a high or critical water stress. The spatial disaggregation of the indicator by river basin allow the identification of hotspots where actions can be prioritized and reveal that the area affected by a high or critical water stress spans across all continents with the only exception of Oceania. The analysis is based on the national water withdrawal data available in AQUASTAT for year 2018. The total renewable freshwater resources have been assessed using the GloBWat model (https://hess.copernicus.org/articles/19/3829/2015/) and the environmental Flows have been estimated applying the percentages available on the GEFIS portal 2021 (http://eflows.iwmi.org/). Further details on the methodology applied can be found at: https://ucl.scienceopen.com/document/read?vid=18caef6a-0b8f-4e0c-a3e6-807e55d075a2. **Data publication:** 2022-03-11 **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:jippe.hoogeveen@fao.org) Resource Contact: [Michela Marinelli](mailto:michela.marinelli@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Resource constraints:** Creative Commons Attribution 4.0 International (CC BY 4.0) **Online resources:** Download - Level of Water Stress (SDG 6.4.2) by major river basin (ESRI shapefile)

This dataset was obtained by delineating drainage basin boundaries from hydrologically corrected elevation data (HydroSHEDS and Hydro1K). Input data resolution is 15 arc-seconds between 60 N and 60 S latitude (based on SRTM), and 30 arc-seconds for higher latitudes (based on GTOPO30). The dataset consists of the following information: numerical code (MAJ_BAS), name (MAJ_NAME) and area (MAJ_AREA) of the major basin in square km. **Data creation:** 2011-02-02 **Supplemental Information:** This dataset is developed as part of a GIS-based information system on water resources. 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. The map is also available in the SOLAW Report 15: “Sustainable options for addressing land and water problems – A problem tree and case studies”. **Citation:** Food and Agriculture Organization of the United Nations, FAO Land and Water Division. Major hydrological basins of the world. Latest update: 02/02/2011. Accessed (dd-mm/yy) from: https://data.apps.fao.org/catalog//iso/7707086d-af3c-41cc-8aa5-323d8609b2d1 **Contact points:** Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) Resource Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** The majority of the linework of the map was obtained by delineating drainage basin boundaries 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). Areas north of the SRTM extent, 60 degrees N, were obtained by merging with the HYDRO1k basin layer. **Resource constraints:** This product "Major hydrological basins of the world" incorporates data from the **HydroSHEDS** database which is © World Wildlife Fund, Inc. (2006-2013) and has been used herein under license. WWF has not evaluated the data as altered and incorporated within the "Major hydrological basins of the world dataset", and therefore gives no warranty regarding its accuracy, completeness, currency or suitability for any particular purpose. **Online resources:** Download - Major hydrological basins of the world (ESRI shapefile) Portions of the HydroSHEDS database incorporate data which are the intellectual property rights of © USGS (2006-2008), NASA (2000-2005), ESRI (1992-1998), CIAT (2004-2006), UNEP-WCMC (1993), WWF (2004), Commonwealth of Australia (2007), and Her Royal Majesty and the British Crown and are used under license. HydroSHEDS dataset download and technical information Major rivers of the world

This dataset is the updated version of FAO's Hydrological Basins of the World dataset, published earlier in this catalog (https://data.apps.fao.org/catalog//iso/f2615a41-6383-4aa4-aa21-743330eb03ae) The dataset is included as part of Geo-Spatial Information collected and published in the framework of the AQUASTAT - programme of the Land and Water Division of the Food and Agriculture Organization of the United Nations. https://www.fao.org/aquastat/ **Data publication:** 2025-05-02 **Data revision:** 2026-04-13 **Citation:** Food and Agriculture Organization of the United Nations, FAO Land and Water Division. Major hydrological basins of the world, Hydrological sub-basins v2 (Global - 2026) - AQUASTAT, Latest update: 13/04/2026. Accessed (dd-mm/yy) from: https://data.apps.fao.org/catalog/dataset/8cc4c29c-491a-4715-b97f-6a6e8c5f125d **Contact points:** Resource Contact: [AQUASTAT](mailto:aquastat@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** This product incorporates data from the HydroSHEDS database (https://www.hydrosheds.org/) which is © World Wildlife Fund, Inc. (2006-2013) and has been used herein under license. WWF has not evaluated the data as altered and incorporated within the "Major hydrological basins of the world dataset", and therefore gives no warranty regarding its accuracy, completeness, currency or suitability for any particular purpose. Recent data review has resulted in the correction of minor topology errors. **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download the data from Google Cloud Storage

This dataset is the updated version of FAO's Major Hydrological Basins of the World dataset, published earlier in this catalog (https://data.apps.fao.org/catalog//iso/7707086d-af3c-41cc-8aa5-323d8609b2d1) The dataset is included as part of Geo-Spatial Information collected and published in the framework of the AQUASTAT - programme of the Land and Water Division of the Food and Agriculture Organization of the United Nations. https://www.fao.org/aquastat/ **Data publication:** 2025-05-02 **Data revision:** 2026-08-31 **Citation:** Food and Agriculture Organization of the United Nations, FAO Land and Water Division. Major hydrological basins of the world, Major hydrological basins v2 (Global - 2026) - AQUASTAT, Latest update: 13/04/2026. Accessed (dd-mm/yy) from: https://data.apps.fao.org/catalog/dataset/d617520f-7ce4-4e54-ac2c-c550cd764a6b **Contact points:** Resource Contact: [AQUASTAT](mailto:aquastat@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** This product incorporates data from the HydroSHEDS database (https://www.hydrosheds.org/) which is © World Wildlife Fund, Inc. (2006-2013) and has been used herein under license. WWF has not evaluated the data as altered and incorporated within the "Major hydrological basins of the world dataset", and therefore gives no warranty regarding its accuracy, completeness, currency or suitability for any particular purpose. Recent data review has resulted in the correction of minor topology errors. **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** Download the data from Google Cloud Storage

The SWOT Level 2 River Single-Pass Vector Reach Data Product from the Surface Water Ocean Topography (SWOT) mission provides water surface elevation, slope, width, and discharge derived from the high rate (HR) data stream from the Ka-band Radar Interferometer (KaRIn). SWOT launched on December 16, 2022 from Vandenberg Air Force Base in California into a 1-day repeat orbit for the "calibration" or "fast-sampling" phase of the mission, which completed in early July 2023. After the calibration phase, SWOT entered a 21-day repeat orbit in August 2023 to start the "science" phase of the mission, which is expected to continue through 2025. Water surface elevation, slope, width, and discharge are provided for river reaches (approximately 10 km long) and nodes (approximately 200 m spacing) identified in the prior river database, and distributed as feature datasets covering the full swath for each continent-pass. These data are generally produced for inland and coastal hydrology surfaces, as controlled by the reloadable KaRIn HR mask. The dataset is distributed in Esri Shapefile format.  Please note that this collection contains SWOT Version C science data products.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-2.0  This service includes a subset of the "Basic" attributes. "Basic" attributes are intended for users interested in the KaRIn measurements as provided. For more info on the differences between "Basic" and "Expert" attributes please review the Product Description Document (PDD). If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

The SWOT Level 2 River Single-Pass Vector Reach Data Product from the Surface Water Ocean Topography (SWOT) mission provides water surface elevation, slope, width, and discharge derived from the high rate (HR) data stream from the Ka-band Radar Interferometer (KaRIn). SWOT launched on December 16, 2022 from Vandenberg Air Force Base in California into a 1-day repeat orbit for the "calibration" or "fast-sampling" phase of the mission, which completed in early July 2023. After the calibration phase, SWOT entered a 21-day repeat orbit in August 2023 to start the "science" phase of the mission, which is expected to continue through 2025. Water surface elevation, slope, width, and discharge are provided for river reaches (approximately 10 km long) and nodes (approximately 200 m spacing) identified in the prior river database, and distributed as feature datasets covering the full swath for each continent-pass. These data are generally produced for inland and coastal hydrology surfaces, as controlled by the reloadable KaRIn HR mask. The dataset is distributed in Esri Shapefile format.  Please note that this collection contains SWOT Version C science data products.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-2.0  If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

The SWOT Level 2 River Single-Pass Vector Data Product (SWOT_L2_HR_RiverSP_D) provides hydrologic measurements for predefined river reaches and nodes, derived from high-resolution radar observations collected by the Ka-band Radar Interferometer (KaRIn) aboard the SWOT satellite. This product reports water surface elevation, slope, width, area, and discharge estimates for each reach, along with corresponding node-level details. All features are defined by the Prior River Database (PRD), which encodes river geometry and topology across global basins.  Each granule covers a single satellite pass over one or more continents and includes two Esri shapefiles: one for river reaches (as polylines) and one for nodes (as points). Shapefile attributes include both SWOT-derived measurements and metadata from the PRD. Water surface elevations are referenced to the WGS84 ellipsoid and are corrected for geoid height and solid Earth, load, and pole tides. Measurements are aggregated from lower-level pixel detections (PIXC product) assigned to hydrologic features via the auxiliary PIXCVec product. The product also includes consensus and algorithm-specific river discharge estimates, both unconstrained and constrained by historical gauge data.  The RiverSP product provides reach-scale hydrologic variables suitable for analyzing inland water dynamics, estimating discharge, and monitoring river changes over time. It enables direct integration with the PRD-defined river network and supports applications in large-scale hydrologic modeling, basin monitoring, and water resource management. Data are distributed in shapefile format with metadata and attribute definitions aligned to GIS and hydrologic standards.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-D  This service includes a subset of the "Basic" attributes. "Basic" attributes are intended for users interested in the KaRIn measurements as provided. For more info on the differences between "Basic" and "Expert" attributes please review the Product Description Document (PDD). If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

Global river network and lake centerlines at 1:10 million scale from Natural Earth, derived primarily from World Data Bank 2. Includes major rivers worldwide with scale rank attributes for cartographic filtering. Use this layer for river network mapping, hydrological analysis, catchment studies, and cartographic base mapping at global and continental scales. No additional information provided.

The SWOT Level 2 River Single-Pass Vector Data Product (SWOT_L2_HR_RiverSP_D) provides hydrologic measurements for predefined river reaches and nodes, derived from high-resolution radar observations collected by the Ka-band Radar Interferometer (KaRIn) aboard the SWOT satellite. This product reports water surface elevation, slope, width, area, and discharge estimates for each reach, along with corresponding node-level details. All features are defined by the Prior River Database (PRD), which encodes river geometry and topology across global basins.  Each granule covers a single satellite pass over one or more continents and includes two Esri shapefiles: one for river reaches (as polylines) and one for nodes (as points). Shapefile attributes include both SWOT-derived measurements and metadata from the PRD. Water surface elevations are referenced to the WGS84 ellipsoid and are corrected for geoid height and solid Earth, load, and pole tides. Measurements are aggregated from lower-level pixel detections (PIXC product) assigned to hydrologic features via the auxiliary PIXCVec product. The product also includes consensus and algorithm-specific river discharge estimates, both unconstrained and constrained by historical gauge data.  The RiverSP product provides reach-scale hydrologic variables suitable for analyzing inland water dynamics, estimating discharge, and monitoring river changes over time. It enables direct integration with the PRD-defined river network and supports applications in large-scale hydrologic modeling, basin monitoring, and water resource management. Data are distributed in shapefile format with metadata and attribute definitions aligned to GIS and hydrologic standards.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-D  If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

The SWOT Level 2 River Single-Pass Vector Data Product (SWOT_L2_HR_RiverSP_D) provides hydrologic measurements for predefined river reaches and nodes, derived from high-resolution radar observations collected by the Ka-band Radar Interferometer (KaRIn) aboard the SWOT satellite. This product reports water surface elevation, slope, width, area, and discharge estimates for each reach, along with corresponding node-level details. All features are defined by the Prior River Database (PRD), which encodes river geometry and topology across global basins.  Each granule covers a single satellite pass over one or more continents and includes two Esri shapefiles: one for river reaches (as polylines) and one for nodes (as points). Shapefile attributes include both SWOT-derived measurements and metadata from the PRD. Water surface elevations are referenced to the WGS84 ellipsoid and are corrected for geoid height and solid Earth, load, and pole tides. Measurements are aggregated from lower-level pixel detections (PIXC product) assigned to hydrologic features via the auxiliary PIXCVec product. The product also includes consensus and algorithm-specific river discharge estimates, both unconstrained and constrained by historical gauge data.  The RiverSP product provides reach-scale hydrologic variables suitable for analyzing inland water dynamics, estimating discharge, and monitoring river changes over time. It enables direct integration with the PRD-defined river network and supports applications in large-scale hydrologic modeling, basin monitoring, and water resource management. Data are distributed in shapefile format with metadata and attribute definitions aligned to GIS and hydrologic standards.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-D  If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

The SWOT Level 2 River Single-Pass Vector Reach Data Product from the Surface Water Ocean Topography (SWOT) mission provides water surface elevation, slope, width, and discharge derived from the high rate (HR) data stream from the Ka-band Radar Interferometer (KaRIn). SWOT launched on December 16, 2022 from Vandenberg Air Force Base in California into a 1-day repeat orbit for the "calibration" or "fast-sampling" phase of the mission, which completed in early July 2023. After the calibration phase, SWOT entered a 21-day repeat orbit in August 2023 to start the "science" phase of the mission, which is expected to continue through 2025. Water surface elevation, slope, width, and discharge are provided for river reaches (approximately 10 km long) and nodes (approximately 200 m spacing) identified in the prior river database, and distributed as feature datasets covering the full swath for each continent-pass. These data are generally produced for inland and coastal hydrology surfaces, as controlled by the reloadable KaRIn HR mask. The dataset is distributed in Esri Shapefile format.  Please note that this collection contains SWOT Version C science data products.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-2.0  This service includes a subset of the "Basic" attributes. "Basic" attributes are intended for users interested in the KaRIn measurements as provided. For more info on the differences between "Basic" and "Expert" attributes please review the Product Description Document (PDD). If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

The SWOT Level 2 River Single-Pass Vector Data Product (SWOT_L2_HR_RiverSP_D) provides hydrologic measurements for predefined river reaches and nodes, derived from high-resolution radar observations collected by the Ka-band Radar Interferometer (KaRIn) aboard the SWOT satellite. This product reports water surface elevation, slope, width, area, and discharge estimates for each reach, along with corresponding node-level details. All features are defined by the Prior River Database (PRD), which encodes river geometry and topology across global basins.  Each granule covers a single satellite pass over one or more continents and includes two Esri shapefiles: one for river reaches (as polylines) and one for nodes (as points). Shapefile attributes include both SWOT-derived measurements and metadata from the PRD. Water surface elevations are referenced to the WGS84 ellipsoid and are corrected for geoid height and solid Earth, load, and pole tides. Measurements are aggregated from lower-level pixel detections (PIXC product) assigned to hydrologic features via the auxiliary PIXCVec product. The product also includes consensus and algorithm-specific river discharge estimates, both unconstrained and constrained by historical gauge data.  The RiverSP product provides reach-scale hydrologic variables suitable for analyzing inland water dynamics, estimating discharge, and monitoring river changes over time. It enables direct integration with the PRD-defined river network and supports applications in large-scale hydrologic modeling, basin monitoring, and water resource management. Data are distributed in shapefile format with metadata and attribute definitions aligned to GIS and hydrologic standards.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-D  This service includes a subset of the "Basic" attributes. "Basic" attributes are intended for users interested in the KaRIn measurements as provided. For more info on the differences between "Basic" and "Expert" attributes please review the Product Description Document (PDD). If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

The SWOT Level 2 River Single-Pass Vector Data Product (SWOT_L2_HR_RiverSP_D) provides hydrologic measurements for predefined river reaches and nodes, derived from high-resolution radar observations collected by the Ka-band Radar Interferometer (KaRIn) aboard the SWOT satellite. This product reports water surface elevation, slope, width, area, and discharge estimates for each reach, along with corresponding node-level details. All features are defined by the Prior River Database (PRD), which encodes river geometry and topology across global basins.  Each granule covers a single satellite pass over one or more continents and includes two Esri shapefiles: one for river reaches (as polylines) and one for nodes (as points). Shapefile attributes include both SWOT-derived measurements and metadata from the PRD. Water surface elevations are referenced to the WGS84 ellipsoid and are corrected for geoid height and solid Earth, load, and pole tides. Measurements are aggregated from lower-level pixel detections (PIXC product) assigned to hydrologic features via the auxiliary PIXCVec product. The product also includes consensus and algorithm-specific river discharge estimates, both unconstrained and constrained by historical gauge data.  The RiverSP product provides reach-scale hydrologic variables suitable for analyzing inland water dynamics, estimating discharge, and monitoring river changes over time. It enables direct integration with the PRD-defined river network and supports applications in large-scale hydrologic modeling, basin monitoring, and water resource management. Data are distributed in shapefile format with metadata and attribute definitions aligned to GIS and hydrologic standards.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-D  If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

Global network of major rivers derived from HydroSHEDS at 15 arc-second resolution. Includes all rivers with a catchment area above the threshold for major streams, with attributes for river name, stream order, and basin affiliation. Use this layer for global hydrological analysis, international river basin governance, and continental-scale water resource mapping. No additional information provided.

OPERA Level-3 Dynamic Surface Water Extent (DSWx) product from Harmonized Landsat-8/9 and Sentinel-2A/B/C (HLS), processed and developed by OPERA (JPL/USGS). Values for B01 WTR are a masked interpreted water classification layer. This represents pixel-wise classification into one of three water classes (not water, open water, and partial surface water), HLS snow/ice, HLS cloud/cloud shadow and adjacent to cloud/cloud shadow, or no data classes. This dataset contains Level-3 Dynamic OPERA surface water extent product version 1. The data are validated surface water extent observations beginning April 2023. Known issues and caveats on usage are described in the Product Documentation. The input dataset for generating each product is the Harmonized Landsat-8 and Sentinel-2A/B/C (HLS) product version 2.0. HLS products provide surface reflectance (SR) data from the Operational Land Imager (OLI) aboard the Landsat 8 satellite and the MultiSpectral Instrument (MSI) aboard the Sentinel-2A/B/C satellite. The surface water extent products are distributed over projected map coordinates using the Universal Transverse Mercator (UTM) projection. Each UTM tile covers an area of 109.8 km × 109.8 km. This area is divided into 3,660 rows and 3,660 columns at 30-m pixel spacing. This EGIS service offers access to the water classification data layer. More information about the dataset is available at https://www.earthdata.nasa.gov/data/catalog/pocloud-opera-l3-dswx-hls-v1-1.0 OPERA was informed by the Satellite Needs Working Group (SNWG), an interagency effort of the U.S. Government dedicated to identifying and addressing Earth observation needs across U.S. civilian federal agencies. If you have feedback on this service, please provide them via this form. For questions about this service, please contact podaac@podaac.jpl.nasa.gov For tutorials on using this service, please visit the PO.DAAC Cookbook. Disclaimer: If opening with the MapViewer in the browser, due to the size of the underlying data, it can take a few minutes for the data to render on the map. Tips: zoom into your area of interest on the map; and/or change time slider settings - see the PODAAC Cookbook tutorial. Fields objectid: The unique, internal database ID for the specific image. name: The granule/filename of the scene. minps, maxps, lowps, highps: "Pixel Spacing (ps)" metrics used by the ArcGIS server's backend to decide at what zoom levels the image should be visible on a map. category: A backend GIS tag indicating the type of raster (1 for primary data/source raster & 2 for overviews). centerx & centery: The precise center point (Longitude and Latitude) of the image footprint. shape: The geographic footprint of the image. processingdate: The date and time the image was uploaded and processed into the image service. tileid: The specific tile identifier of the product, which is also the tile ID of the input HLS product in the Military Grid Reference System (MGRS). (e.g., T11SPA or T12STF). datetime: The acquisition date and time derived from the input HLS granule name. productgenerationdatetime: The date and time at which the product was generated by OPERA. cloud_coverage: The percentage of pixels that is obscured by clouds.  spacecraft_name: The name of the sensor platform (e.g., Landsat-8, Sentinel-2A, Sentinel-2B).  downloadurl: The direct web link to download the individual data file (requires NASA Earthdata authentication). urldisplay: A secondary URL field sometimes used by web maps to generate clickable links in pop-up windows. Colormap

This vector tile layer presents the Environment Watersheds style (World Edition) and was designed to show global watershed boundary lines. Map features in the layer are from the HydroSHEDS v1 dataset. This layer is designed for use with the Environment Base, Environment Detail and Label, and Environment Surface Water and Label to combine into one unified basemap. This vector tile layer provides unique capabilities for customization and high-resolution display. This vector tile layer is built using the same data sources used for other Esri Vector Basemaps. For details on data sources contributed by the GIS community, view the map of Community Maps Basemap Contributors. Esri Vector Basemaps are updated monthly. This layer is used in the Environment Map web map included in ArcGIS Living Atlas of the World. See the Vector Basemaps group for other vector tile layers. Customize this Style Learn more about customizing this vector basemap style using the Vector Tile Style Editor. Additional details are available in ArcGIS Online Blogs and the Esri Vector Basemaps Reference Document.

Natural Earth admin 0 countries lakes at 1:10 million scale: public domain cartographic vector data built to make small-scale world, regional and country maps.

A representation of the confidence associated with the WTR classification that is based on a combination of Diagnostic Layer (DIAG) results and quality assurance information provided with the input HLS data. For example, the Open water class of the WTR layer is split into two classes: High Confidence and Moderate Confidence while WTR Partial surface water Class pixels of WTR are flagged as either Partial surface water Conservative or Partial surface water Aggressive, with the latter exhibiting less certainty. As in the WTR layers, pixels for which water retrievals are difficult or impossible due to HLS snow/ice, HLS cloud/shadow, or fill values are also noted in the CONF layer. This dataset contains Level-3 Dynamic OPERA surface water extent product version 1. The data are validated surface water extent observations beginning January 2023. Known issues and caveats on usage are described in the Product Documentation. The input dataset for generating each product is the Harmonized Landsat-8 and Sentinel-2A/B/C (HLS) product version 2.0. HLS products provide surface reflectance (SR) data from the Operational Land Imager (OLI) aboard the Landsat 8 satellite and the MultiSpectral Instrument (MSI) aboard the Sentinel-2A/B/C satellite. The surface water extent products are distributed over projected map coordinates using the Universal Transverse Mercator (UTM) projection. Each UTM tile covers an area of 109.8 km × 109.8 km. This area is divided into 3,660 rows and 3,660 columns at 30-m pixel spacing. This EGIS service offers access to the confidence data layer. More information about the dataset is available at https://www.earthdata.nasa.gov/data/catalog/pocloud-opera-l3-dswx-hls-v1-1.0 OPERA was informed by the Satellite Needs Working Group (SNWG), an interagency effort of the U.S. Government dedicated to identifying and addressing Earth observation needs across U.S. civilian federal agencies. If you have feedback on this service, please provide them via this form. For questions about this service, please contact podaac@podaac.jpl.nasa.gov For tutorials on using this service, please visit the PO.DAAC Cookbook. Disclaimer: If opening with the MapViewer in the browser, due to the size of the underlying data, it can take a few minutes for the data to render on the map. Tips: zoom into your area of interest on the map; and/or change time slider settings - see the PODAAC Cookbook tutorial. Fields objectid: The unique, internal database ID for the specific image. name: The granule/filename of the scene. minps, maxps, lowps, highps: "Pixel Spacing (ps)" metrics used by the ArcGIS server's backend to decide at what zoom levels the image should be visible on a map. category: A backend GIS tag indicating the type of raster (1 for primary data/source raster & 2 for overviews). centerx & centery: The precise center point (Longitude and Latitude) of the image footprint. shape: The geographic footprint of the image. processingdate: The date and time the image was uploaded and processed into the image service. tileid: The specific tile identifier of the product, which is also the tile ID of the input HLS product in the Military Grid Reference System (MGRS). (e.g., T11SPA or T12STF). datetime: The acquisition date and time derived from the input HLS granule name. productgenerationdatetime: The date and time at which the product was generated by OPERA. cloud_coverage: The percentage of pixels that is obscured by clouds.  spacecraft_name: The name of the sensor platform (e.g., Landsat-8, Sentinel-2A, Sentinel-2B).  downloadurl: The direct web link to download the individual data file (requires NASA Earthdata authentication). urldisplay: A secondary URL field sometimes used by web maps to generate clickable links in pop-up windows. Colormap

The SWOT Level 2 River Single-Pass Vector Reach Data Product from the Surface Water Ocean Topography (SWOT) mission provides water surface elevation, slope, width, and discharge derived from the high rate (HR) data stream from the Ka-band Radar Interferometer (KaRIn). SWOT launched on December 16, 2022 from Vandenberg Air Force Base in California into a 1-day repeat orbit for the "calibration" or "fast-sampling" phase of the mission, which completed in early July 2023. After the calibration phase, SWOT entered a 21-day repeat orbit in August 2023 to start the "science" phase of the mission, which is expected to continue through 2025. Water surface elevation, slope, width, and discharge are provided for river reaches (approximately 10 km long) and nodes (approximately 200 m spacing) identified in the prior river database, and distributed as feature datasets covering the full swath for each continent-pass. These data are generally produced for inland and coastal hydrology surfaces, as controlled by the reloadable KaRIn HR mask. The dataset is distributed in Esri Shapefile format.  Please note that this collection contains SWOT Version C science data products.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-2.0  This service includes a subset of the "Basic" attributes. "Basic" attributes are intended for users interested in the KaRIn measurements as provided. For more info on the differences between "Basic" and "Expert" attributes please review the Product Description Document (PDD). If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

The SWOT Level 2 River Single-Pass Vector Reach Data Product from the Surface Water Ocean Topography (SWOT) mission provides water surface elevation, slope, width, and discharge derived from the high rate (HR) data stream from the Ka-band Radar Interferometer (KaRIn). SWOT launched on December 16, 2022 from Vandenberg Air Force Base in California into a 1-day repeat orbit for the "calibration" or "fast-sampling" phase of the mission, which completed in early July 2023. After the calibration phase, SWOT entered a 21-day repeat orbit in August 2023 to start the "science" phase of the mission, which is expected to continue through 2025. Water surface elevation, slope, width, and discharge are provided for river reaches (approximately 10 km long) and nodes (approximately 200 m spacing) identified in the prior river database, and distributed as feature datasets covering the full swath for each continent-pass. These data are generally produced for inland and coastal hydrology surfaces, as controlled by the reloadable KaRIn HR mask. The dataset is distributed in Esri Shapefile format.  Please note that this collection contains SWOT Version C science data products.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-2.0  If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

The SWOT Level 2 River Single-Pass Vector Reach Data Product from the Surface Water Ocean Topography (SWOT) mission provides water surface elevation, slope, width, and discharge derived from the high rate (HR) data stream from the Ka-band Radar Interferometer (KaRIn). SWOT launched on December 16, 2022 from Vandenberg Air Force Base in California into a 1-day repeat orbit for the "calibration" or "fast-sampling" phase of the mission, which completed in early July 2023. After the calibration phase, SWOT entered a 21-day repeat orbit in August 2023 to start the "science" phase of the mission, which is expected to continue through 2025. Water surface elevation, slope, width, and discharge are provided for river reaches (approximately 10 km long) and nodes (approximately 200 m spacing) identified in the prior river database, and distributed as feature datasets covering the full swath for each continent-pass. These data are generally produced for inland and coastal hydrology surfaces, as controlled by the reloadable KaRIn HR mask. The dataset is distributed in Esri Shapefile format.  Please note that this collection contains SWOT Version C science data products.  This collection is a sub-collection of its parent: https://doi.org/10.5067/SWOT-RIVERSP-2.0  If you have feedback on this service, please provide them via this form. For question about this service, please contact podaac@podaac.jpl.nasa.gov

A natural, flowing body of water emptying into an ocean, lake or other body of water and usually fed along it's course by converging tributaries. Data Dictionary for river_poly: docs.topo.linz.govt.nz/data-dictionary/tdd-class-r... This layer is a component of the Topo50 map series. The Topo50 map series provides topographic mapping for the New Zealand mainland, Chatham and New Zealand's offshore islands, at 1:50,000 scale. Further information on Topo50: www.linz.govt.nz/topography/topo-maps/topo50

Global lakes and reservoir polygons at 1:10 million scale from Natural Earth, including major inland water bodies worldwide. Includes the Great Lakes, Lake Victoria, Lake Tanganyika, and all other significant lakes. Use this layer for inland water mapping, hydrological analysis, environmental assessments, and cartographic base mapping globally. No additional information provided.