Abstract
This article explores the transformative role of satellite geodesy, particularly through the Gravity Recovery and Climate Experiment (GRACE) mission, in advancing hydrology and water resource management. GRACE provides unique insights into total terrestrial water storage, enabling drought detection, groundwater monitoring, and enhanced hydrological modeling. By integrating GRACE data with models and other observations, the article illustrates the potential for improved characterization of plant water relations and projections of water availability under climate change. The discussion also highlights complementary satellite technologies and their synergistic use with GRACE.