The study of groundwater and the geological formations that influence its presence and movement.

जलभृतिकी

English Usage: "The hydrogeology of the region is crucial for understanding its water supply."

Hindi Usage: "क्षेत्र की जलभृतिकी उसकी जल आपूर्ति को समझने के लिए बहुत महत्वपूर्ण है।”