In addition to optical sensors data, microwave data have also been used at experimental level for deriving information on lithology, landforms and structures (Ghoneim and El-Baz, 2007). Microwave (Synthetic Aperture Radar) data have a very limited capability for direct measurement of groundwater because the depth of penetration is limited to a few centimeters except in extremely dry sand covered areas. Imaging radar data has proven to be very useful in discrimination of surface lithology buried palaeo-channels, dykes, sand-covered bed rock to a depth ranging from 1.5 to 6.0 m (Drury 1990; Jensen 1995; Sabins 1987; Shankar et al., 2001).