Abstarct: The aime of this investigation is site selection for digging water well to supply drinking water for Kerend township in the Northwest of Islamabad-e Gharb. The study area is a karstic region around the Kerend town situated between 46° 6- 46° 22 longitude and 34° 9- 34° 29 latitudes. In this study, geology, hydrogeology and geomorphology data were used to determine suitable locations for water well. Firstly, all of the effective parameters were identified and were converted to data layears. These parameters are including litology, dip, and depth of karstic vallyes, fractuers densities and the distance from the fractures. Geographic information system (GIS) and Remote sensing (RS) softwares were used to prepare these laxyers. After prepring data layears for making an integrated decision, a value is specified for each laxyer which is proportional to its significance in groundwater flow. laxyers wre over layed by using GIS and finally the locations with values greater than 70 percent were selected for further evalution. In the final stage, with respect to limbs of anticlines and axial plane of synclines, and distance from Kerend town, some primarily selected sites were eliminated. At last, according to some restrictions such as situation with respect to the spring's catchment areas in the study area, the remaining sites were re-considered and the proper locations for digging well for supplying drinking water for Krend have been introuduced.