This study was planned to examine the clear-cut changes that have taken place in the Jordan Valley, specially the Dead Sea during the latest six decades. To do that various modern and technical means basically remote-sensing and GIS geographic information system applications were employed. Despite the imprecision, Satellite images were more efficient compared with other filed work photographs and maps in saving both money and time. Having known that most pools, lakes and dams are surrounded by forests, the delineation processes for these bodies by using remote-sensing and GIS techniques become easier and achieve better results. The reason that stands behind such an assumption is the chemical and physical composition of the water that makes the electromagnetic waves reacts in a different manner from other surfaces. In addition to their topographic forms, water body surfaces are in a sharp contrast with other surfaces, Vis, the earth. So due to the vital economical as well as environmental importance of the Dead Sea for Jordan and the region in general, this study was designed to explore the constant dangerous changes that take place in this area. Undoubtedly, the main dangerous systems from the notable decrease of water amount in this unique sea, were high evaporation due to its location at the lowest spot of land and dams and other irrigation projects at its tributaries.