Groundwater is crucial for many people, especially in dry areas. Scientists used isotopic and geophysical methods to understand how groundwater recharges in a semi-arid region. They found that rainfall is influenced by evaporation and altitude. Different groundwater sources have distinct isotopic patterns. Deep groundwater changes over time due to various water sources and local conditions. Geophysical surveys helped map out the underground water movement. This new model can aid in managing water resources in the area.