Groundwater is considered the major portion of the world’s freshwater resources. One of
the main challenges facing the sustainable development of Egypt is the need for better management
of its limited fresh water resources. Groundwater exists in the Nile Valley, Nile Delta, Western Desert
Oases, and Sinai Peninsula. Hydrogeological mapping of groundwater resources is one of the
main tools for the controlled development of groundwater resources. Remotely sensed surface indicators
of groundwater provide useful data where practical classical alternatives are not available.
Integrated remote sensing and GIS are widely used in groundwater mapping. Locating potential
groundwater targets is becoming more convenient, cost effective than invasive methods and efficient
with the advent of a number of satellite imagery. The nature of remote sensing-based groundwater
exploration is to delineate all possible features connected with localization of groundwater.