Vulnerability of a Tunisian Coastal Aquifer to Seawater Intrusion: Insights from the GALDIT Model
- Zghibi, Adel
- Merzougui, Amira
- Mansaray, Abubakarr
- Mirchi, Ali
- Zouhri, Lahcen
- Chekirbane, Anis
- Msaddek, Mohamed Haythem
- Souissi, Dhekra
- Mabrouk-El-Asmi, Amina
- Boufekane, Abdelmadjid
DOIAbstract
International audienceThe Korba region in northwestern Tunisia has a coastal aquifer that is impacted by intensive irrigation, urban expansion, and sensitivity to SWI. We assessed the vulnerability extent of Korba’s GW to SWI. We utilized a parametric model for GW vulnerability assessment, the GALDIT, which considers six parameters to determine SWI effects. The GALDIT map has four rating categories (≥7.5, 7.5–5, 5–2.5, and <2.5), representing very high, high, moderate, and low vulnerability, respectively. Most of the region was found to be highly vulnerable (44.2% of the surface area), followed by areas characterized by very high (20.3%) and moderate (19.3%) vulnerability. Only 16.2% was found to have low vulnerability. A parameter sensitiv...
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