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Hydrogeological Investigation Of The Beyazsu And Karasu Springs And Determination Of Their Protection Zones, Southeastern Anatolia, Turkey
(Beykent Üniversitesi, 2008) Cetindag, Bahattin; Oztekin Okan, Ozlem
The study area is located at the 25 km NE of the city of Mardin. The basement is represented with lower Eocene Gercüş formation and the limestone of the Eocene Midyat formation. Discharge rates of the Beyazsu and Karasu springs were measured in a long-term time span. The amounts of water discharged by the Beyazsu spring during the 15 June-1 November 2003 and 1 June-1 November 2004 periods are calculated as 6.33x 107 m3 and 6.53x 107 m3, respectively. Likewise, the amounts of water discharged by the Karasu spring during the 1 June-1 November 2003 and 15 June-15 November 2004 periods are found as 3.49x 107 m3 and 3.07x 107 m3, respectively. Karstification is well developed within the limestone of the Midyat formation that feeds the springs and its mode of formation is controlled by fault and fracture systems. Units of the Gercüş formation at the base of the Midyat limestone comprise the impermeable basement for the aquifers in the region. Three different zones were determined as the protection sites for the springs.