The Korin basin is located in Sistan and Baluchestan Province in the southeast of Iran. Rapid ‎agricultural development in this basin has caused increase on demand for water supply. The ‎basin is characterized by an arid climate with an average annual rainfall of 84 mm. The ‎monitoring of the groundwater level exhibits a decreasing trend of water level. The main reason ‎for this decline in the groundwater table is that wells pumping from groundwater resource has ‎exceeded natural recharge in the recent years. In this research the aquifer of this basin has ‎been studied by the geoelectrical method. The need for this research is studying groundwater ‎conditions for protecting groundwater supplies as a unique source of water for this area. ‎ A resistivity survey was carried out in order to study groundwater conditions in the shallow ‎Korin aquifer such as depth, thickness and location of the aquifer and the type of water. Also ‎zones with high yield potential have been determined based on the resistivity information. 596 ‎vertical electrical soundings by Schlumberger array were conducted out at positions in 26 ‎profiles. The resistivity Schlumberger sounding m was carried with half-spacing in the range of ‎‎200 m to 400.‎ The resistivity data confirm that the Korin aquifer consists mainly of an alluvial aquifer. ‎These data were used to determine the depth and nature of the alluvium and the boundaries of ‎the aquifer with a reasonable accuracy. The high resistivity in the southeast and northwest of ‎the aquifer is due to higher water quality and the existence of alluvial fan with coarse grain ‎materials. The lower resistivity in the central and northern parts of the aquifer is due to finer ‎materials. ‎

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