Main Aquifer Analysis Using Vertical Electrical Sounding to Determine the Location of Drilling Well

Abstract

Water is an important aspect of life. People need clean water for their household needs. Problems arise when the supply of clean water does not meet the needs of the community as felt by the residents of Madurejo Village, Prambanan District, Sleman Regency, Yogyakarta. In the dry season, the groundwater level decreases so that the air supply decreases. This study aims to analyze the existence of aquifers that can meet the needs of the community throughout the year. This research has a research flow starting from surveys, field orientation, field measurements, analysis of measurement results, then the location of aquifer locations. The measurement method in the field uses a vertical sounding geoelectric method with a Schlumberger array. This measurement has the main objective of identifying the subsurface as a potential aquifer in Madurejo Village, Prambanan District, Sleman Regency, Yogyakarta. Method of measuring rock resistivity by injection of subsurface currents. Data retrieval is carried out at 2 points with a track length (AB) of 150 to 250 meters. for processing using interpretation software with the final result in the form of rock lithology. This research uses IP2WIN Software and Progress 3.0. The results showed that the two points were close to the existence of the aquifer. The software analyzes at a depth of 9.35-51.5 m at sounding point 1 and 60-80.8 m at sounding point 2 is an aquifer layer. The study concluded that wells could be drilled at both points.