Abstract
Two DRASTIC models have been used in this study, which are generic and pesticide to get the groundwater vulnerable levels to pollution in the Nile aquifer along Assiut governorate. Groundwater vulnerability maps were produced using Geographic Information Systems (GIS). It has been found in map of generic DRASTIC model that the most of the study area is covered by moderate vulnerable and high vulnerable; where 55.2 % of the area is moderately vulnerable and 35.4 % has high level of vulnerability. However in the vulnerability map generated by pesticide DRASTIC model, the results concluded that about 64% of the study area has an extreme to high vulnerability to contamination, 34.6% has a moderate vulnerability and small areas occupy about 1.4% and has a low vulnerability.
Highlights
There is a rising awareness of monitoring groundwater pollution since consumption of groundwater in agriculture, industry, and domestic use has increased
A) Groundwater Vulnerability Implemented By Generic DRASTIC Model The vulnerability map generated by generic DRASTIC Model as shown in Figure 14, while Table 12 demonstrates the summary of vulnerability level and the areas percent of each class
B) Groundwater Vulnerability Implemented By Pesticide DRASTIC Model With regard to the groundwater vulnerability map illustrated in Figure 15 and Table 13, it is shown that about 64% of the study area has an extreme to high vulnerability to contamination, 34.6% has a moderate vulnerability and small areas occupy about 1.4% and has a low vulnerability
Summary
There is a rising awareness of monitoring groundwater pollution since consumption of groundwater in agriculture, industry, and domestic use has increased. Researchers working in groundwater pollution assessment have focused on limited areas in Assuit governorate by using traditional methods such as chemical and bacterial analysis (Sobih et al, 1988) [1]; Abdel-Lah and Shamrukh, 2001 [2]), and electrical resistivity measurement (Bakheit et al, 1993 [3]; Ebrahim, 1997 [4]; Sebaq et al, 2003 [5]; Mohamaden et al, 2009 [6]). Ebrahim (1997) [4] used Schlumberger geoelectrical depth soundings and horizontal geoelectrical profiling to determine the distribution of the contaminated and uncontaminated zones of groundwater in (El-Madabegh) area, northwest of Assiut city. Sebaq et al (2003) [5] used surface geoelectrical methods for delineation of groundwater pollution in Beni Ghaltib area, northwest of Assiut city. Mohamaden et al (2009) [6], carried out Forty-two vertical electrical soundings (VES.'s), using Schlumberger array in Assiut area in order to elucidate hydrogeological information and delineate
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