Modelling stream-groundwater interactions in the Querença-Silves aquifer system

José Paulo Monteiro, Luís Ribeiro, Edite Reis, João Martins, José Matos Silva, Núria Salvador

    Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

    Abstract

    Streamflow in the Central Algarve, during dry seasons, is primarily base-flow. The stream network is also affected by water losses along influent reaches in wet seasons, across streambeds and karstic swallow holes. The representation of these streams in a finite element groundwater flow model allowed an investigation of the factors controlling the spatial distribution of the stream-groundwater interactions. After calibration of transmissivity, the implemented model provided a reliable representation of the equipotential surfaces of the aquifer, accommodating the values of the regional scale water balance. The subsequent introduction of the stream network in the model allowed the identification and systematisation of the parameters and variables needed to improve the conceptualisation of the river-aquifer relations at the local scale. The use of models combined with collected data contributes to the optimisation of monitoring networks and promotes the understanding of the boundary conditions at the regional and local scale.
    Original languageEnglish
    Title of host publicationGroundwater and ecosystems
    EditorsLuís Ribeiro, Tibor Yvan Stigter, António Chambel, Maria Teresa Condesso de Melo, José Paulo Monteiro, Albino Medeiros
    PublisherCRC Press
    Pages307-325
    Number of pages19
    ISBN (Electronic)9780203490990
    ISBN (Print)9781138000339
    DOIs
    Publication statusPublished - 1 Jan 2013

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