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THE NEW AQUEDUCT WATER RISK ATLAS
The World Resources Institute (WRI) updated the Aqueduct Water Risk Atlas to version 3.0 in August 2019. The update introduces a new hydrological model (PCR-GLOBWB 2.0) that incorporates groundwater resources and provides 144 times higher spatial resolution than the previous GLDAS-2 model. The Water Risk Framework was revised by removing four indicators, updating eight, and adding five new ones. Additionally, the tool transitioned from the Global Drainage Basin Database to HydroBASINS level 6 sub-basins to improve alignment with other water risk tools and provide more homogeneous sub-basin sizes. These changes affect the calculation of key metrics, including overall water risk and baseline water stress, which now account for both surface and groundwater supplies and use daily historical data from January 1960 to December 2014.
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Document type: Guide