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Progress on the level of water stress

Global status and acceleration needs for SDG indicator 6.4.2, 2021










FAO and UN Water. 2021. Progress on the level of water stress: Global status and acceleration needs for SDG indicator 6.4.2, 2021. Rome.





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    Book (series)
    A disaggregation of indicator 6.4.2 “Level of water stress: freshwater withdrawal as a proportion of available freshwater resources” at river basin district level in Italy 2023
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    This report is the presentation of the methodology applied in Italy to spatially disaggregate the computation of the level of water stress from the national to the subnational scale (SDG indicator 6.4.2). Compared to the national assessment, which results in a low level of water stress in the country, the spatial disaggregation of the indicator by the hydrological unit highlighted the presence of basins affected by water stress exceeding 60 per cent (district of the Po river basin). The analysis was performed considering the long-term average of the available fresh water resources calculated on different reference periods (1951-2020, 1961-90, 1991-2020), and this put in evidence the impact of climate change on the level of water stress. This report is part of the series SDG 6.4 MONITORING SUSTAINABLE USE OF WATER RESOURCES PAPERS that collects all the achievements on SDG 6.4. The study was implemented by the Italian Institute for Environmental Protection and Research (ISPRA), responsible for the model and data used to assess the total renewable freshwater resources, and the Italian National Institute of Statistics (ISTAT), which has provided the methodology and the official statistics related to water withdrawals by economic sector (Agriculture, Services, and Industry). The study is the outcome of an agreement between FAO and ISPRA under the Integrated Monitoring Initiative for SDG 6 (IMI-SDG6), designed to produce a map of Italy showing the SDG indicator 6.4.2 “Level of water stress: freshwater withdrawal as a proportion of available freshwater resources” disaggregated at river basin district level. To learn more about the Integrated Monitoring Initiative for SDG 6, visit www.sdg6monitoring.org.
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    Book (series)
    Water stress plugin for Water Evaluation and Planning system (WEAP)
    Using the water evaluation and planning tool for the calculation of Sustainable Development Goal indicator 6.4.2
    2024
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    This report presents the instruction manual of the new water stress plugin developed by FAO in collaboration with the Stockholm Environment Institute's U.S. Center (SEI) for the calculation of the SDG indicator 6.4.2 “Level of water stress: freshwater withdrawal as a proportion of available freshwater resources” by river basin.Since the indicator was introduced in 2015, it has been used widely to estimate the level of water stress experienced at the country or regional level. With this new plugin, countries will be able to assess SDG 6.4.2 at the basin and sub-basin levels providing a different and more hydrologically sound view on the dynamics of water resources and their use. The plugin allows exploring the spatial and interannual trends of the level of water stress within a basin avoiding any multiple counting of its freshwater resources and taking into consideration the needs of water supply of the different sections of the basin. By supporting the improvement of water monitoring and management, this report contributes to the achievement of SDG 6.
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    Book (series)
    Incorporating environmental flows into “water stress” indicator 6.4.2
    Guidelines for a minimum standard method for global reporting
    2019
    These guidelines are intended to assist countries to participate in the assessment of SDG 6.4.2 on water stress by contributing data and information on environmental flows (EF). These data are necessary for calculation of the SDG 6.4.2 indicator on water stress, for which countries are required to submit information to FAO who is custodian of this SDG indicator. The guidelines provide a minimum standard method, principally based on the Global Environmental Flows Information System (GEFIS) , which is accessible via http://eflows.iwmi.org, and is the approach that will be used to generate the country EF data that will make up the global 6.4.2 report. Countries that have more comprehensive and accurate EF data will be able to make use of that data when checking the global dataset produced by FAO and also to add additional details to their Voluntary National report on SDG 6.4.2.

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