Irrigation areas v.5 (Global - ~10 km)

This map, compiled to support the analysis of SOLAW report concerning trends and current use of water use in agriculture, shows the percentage of irrigated area supplied by groundwater. Irrigation mainly relies on renewable freshwater resources, either surface water or groundwater. However, while the extent of irrigation and related water uses are reported in statistical databases or by model simulations, information on the source of irrigation water is still very rare. A recent global inventory undertaken by FAO and the University of Bonn reports that 113 million ha, or 38 percent of the total area equipped for irrigation of 301 million ha, is irrigated by groundwater (Siebert et al, 2010). **Data creation:** 2025-12-11 **Contact points:** Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** Input data for this map include: - Global map of irrigation areas at 5 arc-min (Siebert et al., 2007) - Data on sources of irrigation water available by country through the FAO AQUASTAT database - Additional data obtained through desk studies on distribution of sources of irrigation water. The legend indicates the share of irrigated land serviced by groundwater in each pixel. **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International license (CC-BY-4.0) **Online resources:** Download - Percentage of irrigated area serviced by groundwater (ESRI GRID) SOLAW web page

This map shows the extent of land area equipped for irrigation -expressed as percentage- around the turn of the 20th century according to the Global Map of Irrigation Areas (version 4.0.1), together with areas of rainfed agriculture. Data are available from AQUASTAT - programme of the Land and Water Division of the Food and Agriculture Organization of the United Nations. **Data publication:** 2010-10-28 **Contact points:** Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** The spatial datasets used to produce this map are: - The global map of irrigation areas at 5 arc-min (Siebert et al., 2007) - The cropland categories of the global agricultural systems map (SOLAW report "Managing Systems at Risk", map 1.3). **Resource constraints:** copyright **Online resources:** SOLAW website Download- Percentage of area equipped for irrigation (ESRI GRID) GMIA page on AQUASTAT

This map represents the spatial distribution of land under irrigation which is affected by some degree of salinization. It was produced by combining FAO AQUASTAT country statistics regarding irrigated areas affected by salinization with spatial information on irrigated areas where precipitation is not sufficient to leach away salt residues that are built up in the soil due to irrigation. It was assumed that the risk of salinization of irrigated areas can occur only in areas with an Aridity Index lower than 0.65 (where the Aridity Index is defined as Yearly Precipitation divided by Yearly Reference Evapotranspiration). **Data publication:** 2010-11-08 **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:Jippe.Hoogeveen@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** By combining the Global Map of Irrigation Areas with the spatially distributed Aridity Index, irrigated areas could be identified as potentially at risk of salinization. The AQUASTAT country statistics on areas salinized by irrigation were distributed over the irrigated areas at risk of salinization to obtain the map with the "extent of irrigated areas affected by salinization". Source data: -Global Map of Aridity at 10 arc-min (FAO) -Global map of irrigation areas at 5 arc-min (Siebert et al., 2007) The legend indicates the share of land affected by salinization in each pixel. **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International license (CC-BY-4.0) **Online resources:** SOLAW website FAO AQUASTAT website

Overview This layer, prepared by the Commission for Environmental Cooperation (CEC), shows the percentage of the total land area that was equipped for irrigation, around the year 2000. Irrigation is the practice of applying water to land to promote the growth of vegetation such as crops and pastures. The land area actually irrigated is unknown but was smaller than the amount equipped for irrigation. The data are derived from the Global Map of Irrigation Areas, version 4.0.1, produced by the Johann Wolfgang Goethe University, Frankfurt am Main, Germany, and the Food and Agriculture Organization of the United Nations (FAO), Rome, Italy. Geographic Coverage The coverage spans North America, including Canada, Mexico, and the United States. Data Sources and Licensing Commission for Environmental Cooperation (CEC). Siebert, S., P. Döll, S. Feick, J. Hoogeveen and K. Frenken. 2007. Global map of irrigation areas, version 4.0.1. Johann Wolfgang Goethe University, Frankfurt am Main, Germany / Food and Agriculture Organization of the United Nations, Rome, Italy. The data is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0), allowing redistribution and adaptation with appropriate attribution. Update frequency: Not Planned Limitations of use: None. Acknowledgement of the Commission for Environmental Cooperation and (or) the Food and Agriculture Organization of the United Nations (FAO) – Global Information System on Water and Agriculture would be appreciated in products derived from these data. Vintage: 2000 Applications (Intended Use) Assessing the extent and distribution of irrigated agriculture across North America. Water resource and agricultural planning. Supporting research and education on land and water use for agriculture. Cross-border environmental cooperation and reporting among North American nations. Files Download

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 map builds upon work done by Dixon (Dixon et al., 2001) in an attempt to propose a general classification of major farming systems. Based on a combination of global dataset, the map proposes a harmonized classification of major agricultural systems used as the basis for the analysis of SOLAW's Systems at risk. The map is based on an interpretation of global land cover data, combined with thematic datasets showing irrigated land and paddy rice extent. The map is published in SOLAW Report: The state of the world's land and water resources for food and agriculture - Managing systems at risk (2011) and SOLAW Thematic Report 15: Sustainable options for addressing land and water problems - a problem tree and case studies (links in the online resources section). **Data publication:** 2010-11-02 **Contact points:** Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) Resource Contact: [Jippe Hoogeveen](mailto:Jippe.Hoogeveen@fao.org) Resource Contact: Hubert George FAO-UN Land and Water Division **Data lineage:** The spatial datasets used for the production of this map consist of: - GLOBCOVER, global land-cover map for the year 2005 at http://www.gofc-gold.uni-jena.de/sites/globcover.php - Paddy rice systems (Ellis and Ramankutty, 2008) - Median altitude and thermal climates (both datasets are part of the GAEZ v3.0 (IIASA/FAO, 2010) - Global Map of Irrigation Areas v4.0.1 at 5 arc-min (Siebert at al., 2007) - Global Map of Aridity at 10 arc-min (FAO) - Global Administrative Unit Layers (GAUL 2008) - FAO’s Global Livestock Production and Health Atlas (GLiPHA, available at: http://www.fao.org/ag/againfo/home/en/news_archive/AGA_in_action/glipha.html) - FAO’s Agro-MAPS, available at (http://kids.fao.org/agromaps/) **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International licence (CC-BY-4.0) **Online resources:** SOLAW website Download - Agricultural systems (ESRI GRID) Download - Agricultural systems - (ASCII grid with Vat table and class codes) Download - Agricultural systems (GeoTiff) The state of the world's land and water resources for food and agriculture - Managing systems at risk. Sustainable options for addressing land and water problems - a problem tree and case studies.