Around the city of Diyarbakir, many problems arise with regard to the evolution of the river drainage in the Tigris valley, in terms of regional geomorphology. Among the various approaches we used for understanding and reconstruting these dynamics in the past as well as for the present, we have performed morphometric analysis and field studies aiming at reconstructing the recent morphological evolution of the valley from coring, sediment interpretation, 14C dating, and stratigraphic correlations between sections and cored sequences, etc. One of the modern methods and techniques used in geomorphological studies and elucidation of geomorphological problems is geophysical prospections. Electric resistivity data are efficient in determining the underground distribution of geological structures, especially when there is sufficient lithological contrast between geological units. This method produces very useful results that provide series of vertical sections that can be important contributions to interpretating geological features on the field. Such an electric resistivity project has been applied in the Diyarbakır vicinity as a method aiming at understanding problems raised by the development of the Tigris river channel and meanders east and south of the city of Diyarbakır. Within the frame of this programme, we present here the results of a geophysical survey of the Kavs Plain on the left bank of the Tigris river below the Diyarbakir City wall.