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<p>The Tamlouka Plain is located in the Northeastern Algerian province of Guelma. It covers 264&#xa0;km<sup>2</sup> and has a semi-humid climate that supports farming. Its Quaternary alluvial aquifer system is more vulnerable to contamination due to human activity and its sensitivity to changes in water flow. This study employs a geospatial DRASTIC framework to assess groundwater vulnerability by analyzing seven key factors: groundwater depth, total recharge, aquifer composition, lithological characteristics, topographic slope, the effect of the vadose zone, and hydroelectricity. Spatial analysis reveals three vulnerability levels: high (8.08%), moderate (65.26%), and low (26.65%). Areas with higher risk are associated with shallow aquifers and pollutants from residential and agricultural sources. Cross-referencing land use data highlights irrigated farmland and urban areas as primary contamination hotspots. These results support integrating vulnerability assessments into regional conservation plans to improve groundwater protection. The study offers practical insights for prioritizing monitoring, updating hydrogeological data, and applying targeted pollution control measures.</p>

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Groundwater vulnerability assessment of the Tamlouka Plain using a GIS-based DRASTIC model (Northeast Algeria)

  • 期刊论文

  • 发表日期：

    2025年8月14日

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  • Boubguira Selwa,
  • Dinar Haythem,
  • Rebouh Nouh,
  • Tout Faicel,
  • Saadali Badreddine

摘要

The Tamlouka Plain is located in the Northeastern Algerian province of Guelma. It covers 264 km2 and has a semi-humid climate that supports farming. Its Quaternary alluvial aquifer system is more vulnerable to contamination due to human activity and its sensitivity to changes in water flow. This study employs a geospatial DRASTIC framework to assess groundwater vulnerability by analyzing seven key factors: groundwater depth, total recharge, aquifer composition, lithological characteristics, topographic slope, the effect of the vadose zone, and hydroelectricity. Spatial analysis reveals three vulnerability levels: high (8.08%), moderate (65.26%), and low (26.65%). Areas with higher risk are associated with shallow aquifers and pollutants from residential and agricultural sources. Cross-referencing land use data highlights irrigated farmland and urban areas as primary contamination hotspots. These results support integrating vulnerability assessments into regional conservation plans to improve groundwater protection. The study offers practical insights for prioritizing monitoring, updating hydrogeological data, and applying targeted pollution control measures.