EVALUATION OF GROUNDWATER AQUIFER IN THE AREA BETWEEN EL-QUSIYA AND MANFALUT USING VERTICAL ELECTRIC SOUNDINGS (VES) TECHNIQUE

Abstract

The studied area is located northwest of Assiut city which represents a large part of the Nile Valley in Assiut governorate. It lies between latitudes 27° 15 00 and 27° 27 00 N, and longitudes 30° 42 30 to 31° 00 E, covering approximately 330 square kilometers. Fifteen Vertical Electrical soundings (VES) were carried out to evaluate the aquifer in the study area. These soundings were arranged to construct three geoelectric profiles crossing the Nile Valley. Three cross sections were constructed along these profiles to detect the geometry and geoelectric characteristics of the quaternary aquifer based on the interpretation of the sounding curves and the comparison with available drilled wells. The interpretation showed that the thickness of the quaternary aquifer in the study area ranges between 75 and 300 m, in which the maximum thicknesses are detected around Manfalut and at the west of El-Qusiya.