Evaluation and assessment of groundwater in arid regions such as the West El Negila area along the Northwestern Coast of Egypt is important for urbanization and sustainable development. Therefore, groundwater may become the most reasonable complementary resource that is capable to supply the area with needed water for drinking, agriculture and the development. A number of 4 vertical electric soundings (VES) and 50 time domain electromagnetic (TEM) soundings were carried out to investigate the subsurface hydrogeological units in the study area. The interpretation of VES and TEM revealed that the subsurface succession consists of four geoelectrical layers (A, B, C and D). The geoelectrical layer “C" which is equivalent to the Middle Miocene Marmarica limestone represents the water bearing formation in the study area; it attains moderate to low resistivity values (8.8 - 40 Ω.m) and thickness of 16- 40m and appears at depth 2 -116m underground surface. In general, the groundwater is expected to flow from south to north towards the Mediterranean Sea. The priority of sites to provide significant volumes of potable water was determined according to the relatively high resistivity and thickness of the water bearing layer. The more promising locations for drilling water wells exist in the southern parts of the area of study, where the potential for potable groundwater increases. It is expected that the salinity of water bearing layer increases due north.