Mapping Intrinsic Vulnerability to Pollution Using the DRASTIC Method in the Temara Groundwater (Northwestern Morocco)

Mariam Taazzouzte,Hassan Lemacha,Abdessamad Ghafiri,Saida El Moutaki,Imane Haidara

doi:10.4018/ijaeis.293753

Abstract

the DRASTIC method was chosen because it can be adapted to different environments and because it combines the seven criteria that directly influence groundwater: depth, recharge, geology, soil, slope, unsaturated zone and conductivity. Located in the North West of Morocco, the Temara aquifer is a very important water resource, but it is overexploited and deteriorated as never before. This issue is of concern to decision-makers in the field of water management. The objective of this work is to create a map of vulnerability to pollution by the Bay of Geographic Information Systems (GIS) and the DRASTIC model. Thus, the highest vulnerabilities are located around the drinking water treatment plant of Ain Atiq, at the mouth of the Bouregreg River and scattered in places throughout the study area. The results of the physico-chemical analysis showed compatibility with the results of the DRASTIC model.

Highlights

Groundwater is a precious natural resource, it has become increasingly rare all over the world
The objective of this work is to create a map of vulnerability to pollution by the Bay of Geographic Information Systems (GIS) and the DRASTIC model
The geological and hydrogeological contexts, the depth of the water table and anthropogenic inputs are considered as determining factors in the contamination of groundwater, especially, in the case of the Temara aquifer, since it is an open water table that is recharged only by rainwater

Summary

Introduction

Groundwater is a precious natural resource, it has become increasingly rare all over the world. This scarcity stems from, on one hand, the overexploitation in domestic, industrial and agricultural fields. Groundwater is less exposed to the risks of pollution because it exists in depth (Li and al., 2018; Wang and al., 2019; Arya and al., 2020). The heavy impact of this problem on groundwater quality has become a major concern for all countries of the world. This has triggered governments to develop water management programs through academic studies on groundwater vulnerability to pollution

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Methods

Results

Conclusion