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dc.contributor.author Taucare, M
dc.contributor.author Viguier, B
dc.contributor.author Figueroa, R
dc.contributor.author Daniele, L
dc.date.accessioned 2024-01-17T15:55:55Z
dc.date.available 2024-01-17T15:55:55Z
dc.date.issued 2024
dc.identifier.uri https://repositorio.uoh.cl/handle/611/898
dc.description.abstract Ensuring water supply under climate change scenarios is a global concern, and groundwater resources play a crucial role. Aquifer depletion is a worldwide trend, and Chile is no exception. Through a statistical approach with strong hydrogeological criteria, the groundwater overexploitation phenomenon is studied in Central Chile, the most populated region in this mountainous country. With this purpose, we assess the evolution of groundwater levels and pumping between 1970 and 2020 by analysing 26,065 groundwater rights and 222 observation wells. Withdrawals increased from 498 hm3 in 1970 to 8883 hm3 in 2020. We recognised two general trends in groundwater levels: a quasi-steady state hydrodynamic regime pre-1988 and sustained decline post-1988, exacerbated since 2010 with the start of the Megadrought. Although groundwater recharge is expected to decrease during this severe drought, the declining trend strongly correlates with pumping but not with precipitation changes. Climate forcing is usually invoked to warrant the dramatic depletion of groundwater resources, but we demonstrated that all analysed aquifers have been overexploited since much earlier than 2010. Finally, the Chilean aquifers' overexploitation is a clear example of the consequences of prioritising the water offer over the water demand regulation, which hinders the United Nations' sustainable development goals accomplishment.
dc.description.sponsorship consortium CAPTA-CORFO
dc.description.sponsorship ANID's public funding programs: Strategic Drought Research Fund
dc.description.sponsorship Anillos Tematicos
dc.description.sponsorship FONDAP
dc.relation.uri http://dx.doi.org/10.1016/j.scitotenv.2023.167723
dc.subject Groundwater depletion
dc.subject Groundwater management
dc.subject Water scarcity
dc.subject Water security
dc.subject Environmental impact
dc.subject Sustainability
dc.title The alarming state of Central Chile's groundwater resources: A paradigmatic case of a lasting overexploitation
dc.type Artículo
uoh.revista SCIENCE OF THE TOTAL ENVIRONMENT
dc.identifier.doi 10.1016/j.scitotenv.2023.167723
dc.citation.volume 906
dc.identifier.orcid Daniele, Linda/0000-0002-9241-6526
dc.identifier.orcid Viguier, Benoit/0000-0002-8943-5080
dc.identifier.orcid Taucare, Matias/0000-0002-2764-8582
dc.identifier.orcid Figueroa, Ronny/0000-0002-7609-6577
uoh.indizacion Web of Science


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