A GIS Based Groundwater Vulnerability Mapping And Assessment In Berrechid Plain, Using DRASTIC, SINTACS And GOD Models

摘要

Groundwater protection is vital for human evolution and ecological diversity. Agricultural and industrial activities have contributed to the degradation of Berrechid's groundwater quality. In this study, we attempted to assess the vulnerability of the Berrechid aquifer and to identify and classify vulnerable and non-vulnerable areas of contamination in order to provide zoning for the protection of groundwater and the implementation of effective management strategies for these waters. In this context, this study aims to assess, map and generate vulnerability zoning maps in this region using a GIS and the GOD method and to compare the resulting map with the DRASTIC and SINTACS maps we obtained in our previous work. The obtained GOD vulnerability map shows two vulnerability classes: medium and high, with respective areas of 1566.5122 and 1.6426 km~2, while the DRASTIC map has three vulnerability classes: very weak, weak and average with respective areas of 802.767, 766.71 and 1.85 km~2, the SINTACS map has two vulnerability classes: low and medium with respective areas of 1445.13 and 122.56 km~2. The most vulnerable areas are located in shallow areas down to the groundwater and non-protected areas and less vulnerable areas are located in areas with deeper water and where clays are important.