<![CDATA[Grobogan Regency is an agricultural region that frequently faces chronic drought, particularly during extended dry seasons. This situation significantly affects the agricultural sector and the availability of clean water for the population. This study aims to identify the subsurface geological conditions, lithological characteristics of the bedrock, and the distribution and potential of groundwater aquifers using a resistivity-based geoscanner method. This geophysical approach was chosen for its ability to map subsurface structures non-invasively. The research was conducted at six measurement points in Grobogan from July to September 2020. The resistivity data were analyzed using Res2Dinv software to generate two-dimensional subsurface profiles. The results revealed that rock resistivity values ranged from 0.06 to 821 ohm-meters, indicating lithological variations such as clay, sand, calcareous sandstone, marl, and hard limestone. Five distinct aquifer zones were identified with varying depths and thicknesses. One promising site indicated a productive groundwater zone at a depth of 30–70 meters, with a thickness exceeding 20 meters. These findings are expected to serve as a scientific foundation for planning groundwater exploration and sustainable water resource management in Grobogan, particularly in drought-prone areas. Furthermore, the use of geoscanner-based techniques presents a promising application of geophysical methods in the broader context of water resource planning in regions with similar geological settings.]]>
