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At the Guadiana Estuary (southern Iberia), strong river flow regulation and the intensification of droughts pose a significant threat to the freshwater resource due to enhanced saltwater intrusion. To accurately predict the salinity dynamics under various river discharge conditions (i.e., average and extreme), a 3-dimensional idealized model (Delft3D) has been developed, calibrated and validated. The overall performances of the model make it a powerful and versatile tool to design and evaluate mitigation management strategies to control salt intrusion during prolonged periods of low river flow. This paper provides a detailed description of the numerical framework and the validation process, together with examples of the future model applications.

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A New Management Tool to Monitor Salinity Intrusion in the Guadiana Estuary Under Average and Extreme River Discharge Conditions

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Guillermo Martín-Llanes,
  • Erwan Garel,
  • Alejandro López-Ruiz

摘要

At the Guadiana Estuary (southern Iberia), strong river flow regulation and the intensification of droughts pose a significant threat to the freshwater resource due to enhanced saltwater intrusion. To accurately predict the salinity dynamics under various river discharge conditions (i.e., average and extreme), a 3-dimensional idealized model (Delft3D) has been developed, calibrated and validated. The overall performances of the model make it a powerful and versatile tool to design and evaluate mitigation management strategies to control salt intrusion during prolonged periods of low river flow. This paper provides a detailed description of the numerical framework and the validation process, together with examples of the future model applications.