Geo-Information is very important in the worldwide organizations due to its efficiency. GIS technology can be used in Egypt which is an arid country to manage the water resources especially groundwater. The sustainable groundwater management is one of the most important issues Egypt faces in monitoring reclamation projects especially the most of reclamation lands are far from the center of decision makers. Therefore, it is necessary to develop an appropriate Spatial Decision Support System which quickly enables the decision makers to manage and determine the optimal use of groundwater resources without depletion by using a Web GIS in order to explore means of increasing water resources efficiency based on dynamic maps and current data.