Articles | Volume 29, issue 20
https://doi.org/10.5194/hess-29-5185-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-29-5185-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Oct 2025
Research article |
| 15 Oct 2025
| 15 Oct 2025
Increasing water stress in Chile revealed by novel datasets of water availability, land use and water use
Juan Pablo Boisier
Center for Climate and Resilience Research (CR2, FONDAP 1523A0002), Santiago, Chile
Department of Geophysics, Universidad de Chile, Santiago, Chile
Camila Alvarez-Garreton
CORRESPONDING AUTHOR
Center for Climate and Resilience Research (CR2, FONDAP 1523A0002), Santiago, Chile
Department of Geophysics, Universidad de Chile, Santiago, Chile
Rodrigo Marinao
Center for Climate and Resilience Research (CR2, FONDAP 1523A0002), Santiago, Chile
Department of Civil Engineering, Universidad de La Frontera, Temuco, Chile
Mauricio Galleguillos
Center for Climate and Resilience Research (CR2, FONDAP 1523A0002), Santiago, Chile
Faculty of Engineering and Science, Universidad Adolfo Ibáñez, Santiago, Chile
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Achieving a local understanding of fire regimes requires high-resolution, systematic and dynamic data. High-quality information can help to transform evidence into decision-making. Taking advantage of big-data and remote sensing technics we developed a flexible workflow to reconstruct burned area and fire severity data for more than 8000 individual fires in Chile. The framework developed for the database can be applied anywhere in the world with minimal adaptation.
Camila Alvarez-Garreton, Juan Pablo Boisier, René Garreaud, Jan Seibert, and Marc Vis
Hydrol. Earth Syst. Sci., 25, 429–446, https://doi.org/10.5194/hess-25-429-2021, https://doi.org/10.5194/hess-25-429-2021, 2021
Short summary
Short summary
The megadrought experienced in Chile (2010–2020) has led to larger than expected water deficits. By analysing 106 basins with snow-/rainfall regimes, we relate such intensification with the hydrological memory of the basins, explained by snow and groundwater. Snow-dominated basins have larger memory and thus accumulate the effect of persistent precipitation deficits more strongly than pluvial basins. This notably affects central Chile, a water-limited region where most of the population lives.
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Short summary
Our study assesses water stress in Chile from the mid-20th century to the end of the 21st century using novel datasets on water availability, land use, and water demand. We compute a water stress index for all basins in the country and show that, in addition to declining precipitation, rising water demand drives a steady increase in stress. As a drier future is projected for central Chile, the water stress index provides a useful tool for guiding water governance and adaptation strategies.
Our study assesses water stress in Chile from the mid-20th century to the end of the 21st...
