U. Boyraz, C.M. Kazezyılmaz-Alhan* Department of Civil Engineering, Istanbul University, Avcılar-Istanbul, 34320, Turkey. meleka@istanbul.edu.tr   Abstract Ground water is a significant part of the hydrological system and it has a strategical importance in protecting and developing water resources being depleted nowadays. As a natural resource, ground water plays a crucial role in water quality and […]