One of the largest aquifers of central Europe can be found along the Danube river in the border zone between Hungary and Slovakia. During the 70’ies and 80’ies regional geophysical surveys were carried out in both countries to explore underground geological and physical conditions in the area. Electric and hydrolic conductivity are strongly coupled properties in sedimentary environment, so resistivity measurements can efficiently be used to investigate the geometry and quality of aquifers. Using geophysical inversion of Vertical Electric Sounding (VES) data resistivity distribution in different depth ranges were determined. This map shows the estimated average resistivity in the 7-15 m depth range in NW Hungary. Red colour coincide with high resistivity and highly productive porous layers within the aquifer. A subset of VES soundings from the GEOMIND inventory converted to INSPIRE compliant format is displayed on top of the map.