f Geoelectrical sounding for handling hydrogeological problems on coastal flysch terrain

Extensive ground water exploitation near coastal areas may impose serious problems on the water supplying of the existing boreholes. The estimation of the potential of water hearing formations as well as the safety measures to be applied for water-supply and irrigation control, are the main tasks of field hydrogeologist and moreover in areas where low hydraulic gradients dominate. In this paper, the authors deal with some hydrogeological problems encountered in the coastal area of Trizina in eastern Peloponessus, Greece. A geoelectrical survey was conducted in flysch subterrain to delineate in detail the shape of the salt-fresh water interface. Moreover the tectonic structure of the inland part of the basin was examined based on maps showing the lateral distribution of tree resistivity.