The aim of this paper is to present a case history showing the utility of geophysical methods (gravity, frequency and time domain EM) to delineate the extension of saltwater intrusion in a sector of the southeaster part of the Mallorca Island. The study area includes a coastal region between Sa Ràpita and Colènia de Sant Jordi, on the municipality of Campos, Mallorca. Insularity, farming irrigation and tourist demand during summer, among others factors, get worse the problem of water supply in Mallorca island, where water resources are mainly groundwater (75%). This fact has produced a progressive salinization of groundwater because of the inland advance of the saline wedge.


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