The irrigational water demands of the farmers and the process water requirements of the industrial establishments are most supplied from groundwater resources of the plain. This ever-increasing demands for water could no longer be satisfied by the alluvial surfacial aquifer and, hence, numerous deep wells are being drilled in the lower aquifers to supply these high demands. Based on the geological surveys performed in the plain, three different rock formations are observed in the plain. The Mesozoic-aged Bornova Complex forms the foundation of the study area. The Bornova Complex is composed of allochthonous limestone, sandstone, clayey schist and phyllite. The consolidated Neogene sediment units overlay the basement rock by discordance. These sedimentary units are composed of sandstone, claystone and limestone. Finally, as the youngest units of the region, the Quaternary aged alluvial sediments overlay all other units. In accordance with this geological structure, four different aquifers are determined in the plain. These are classified as: (i) Mesozoic-aged allochthonous limestone in Bornova Complex, (ii) Neogene-aged sandstone and gravel, (iii) Neogene-aged limestone; and, (iv) Quaternary-aged unconsolidated alluvial sediments. In this study, hydrogeological characterization of Kemalpasa plain aquifers discussed above will be conducted and a three dimensional interactive model of these layers is prepared. Finally, a three dimensional hydrogeological model of Kemalpasa plain isprepared

irrigational water demands of the farmers and the process water requirements of the industrial establishments are most supplied from groundwater resources of the plain. This ever-increasing demands for water could no longer be satisfied by the alluvial surfacial aquifer and, hence, numerous deep wells are being drilled in the lower aquifers to supply these high demands. Based on the geological surveys performed in the plain, three different rock formations are observed in the plain. The Mesozoic-aged Bornova Complex forms the foundation of the study area. The Bornova Complex is composed of allochthonous limestone, sandstone, clayey schist and phyllite. The consolidated Neogene sediment units overlay the basement rock by discordance. These sedimentary units are composed of sandstone, claystone and limestone. Finally, as the youngest units of the region, the Quaternary aged alluvial sediments overlay all other units. In accordance with this geological structure, four different aquifers are determined in the plain. These are classified as: (i) Mesozoic-aged allochthonous limestone in Bornova Complex, (ii) Neogene-aged sandstone and gravel, (iii) Neogene-aged limestone; and, (iv) Quaternary-aged unconsolidated alluvial sediments. In this study, hydrogeological characterization of Kemalpasa plain aquifers discussed above will be conducted and a three dimensional interactive model of these layers is prepared. Finally, a three dimensional hydrogeological model of Kemalpasa plain is prepared.