Global Map of Irrigation Areas - Version 5
Grid with percentage of area equipped for irrigation with a spatial resolution of 5 arc minutes or 0.083333 decimal degrees. This dataset is developed in the framework of the AQUASTAT Programme of the Land and Water Division of the Food and Agriculture Organization of the United Nations and the Rheinische Friedrich-Wilhems University, Germany. The map shows the amount of area equipped for irrigation around the year 2005 in percentage of the total area on a raster with a resolution of 5 minutes. Additional map layers show the percentage of the area equipped for irrigation that was actually used for irrigation and the percentages of the area equipped for irrigation that was irrigated with groundwater, surface water or non-conventional sources of water.
In details, the following products have been released and made available for download:
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Area equipped for irrigation expressed as percentage of total area: total=aei, surface water=aeisw, groundwater=aeigw, non-conventional sources of water=aeinc (ASCII-grid);
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Area actually irrigated expressed as percentage of area equipped for irrigation (ASCII-grid);
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Area equipped for irrigation expressed in hectares per cell (ASCII-grid);
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Irrigated areas v.5 (ESRI shapefile);
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High and low resolution images (PDF);
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Quality Assessment (Excel)
Due to the map generation method, the quality of the map can never be uniform. The overall quality of the map depends heavily on the individual quality of the data for the different countries.
Supplemental Information:
The maps are generated as a grid with a cellsize of 5 arc minutes. For the GIS-users the maps are distributed in two different formats: as a zipped ASCII-grid that can be easily imported in most GIS-software that support rasters or grids; and, to accommodate people who use GIS-software that doesn't support rasters or grids, as a zipped ESRI shape file. The non-GIS-users can download the map as PDF-file in two different resolutions.
Citation:
Users are requested to refer to the map as follows: "Stefan Siebert, Verena Henrich, Karen Frenken and Jacob Burke (2013). Global Map of Irrigation Areas version 5. Rheinische Friedrich-Wilhelms-University, Bonn, Germany / Food and Agriculture Organization of the United Nations, Rome, Italy".
Contact points:
Metadata Contact: AQUASTAT
Data lineage:
Due to the map generation method, the quality of the map can never be uniform. The overall quality of the map depends heavily on the individual quality of the data for the different countries.
Online resources:
Global Map of Irrigation Areas (GMIA) on the AQUASTAT website
Download - Global area equipped for irrigation expressed as percentage of total area - Raster (ASCII-grid, 2.3 MB)
Download - Global area equipped for irrigation expressed in hectares per cell - Raster (ASCII-grid, 2.3 MB)
Download - Global Map of Irrigation Areas v.5 - Vector (ESRI shapefile, 4 MB)
Download - Global Map of Irrigation Areas v.5 - All files
Download - Global Map of Irrigation Areas v.5 - High resolution image (PDF, 3.1 MB)
Download - Global Map of Irrigation Areas v.5 - Low resolution image (PDF, 0.9 MB)
