 of GRACE satellite measurements  for the 37 world's large aquifer systems reveals that trends in groundwater storage are mostly nonlinear and declines are not secular . There are strong statistical associations between changes in groundwater storage and extreme annual precipitation from 1901 to 2016 in the Great Artesian Basin  and the California Central Valley aquifer . Groundwater recharge of high magnitudes can be generated from intensive precipitation events. On the other hand, recharge can become more episodic, mostly in arid to semiarid locations . For example, in central Tanzania, seven rainfall events between 1955 and 2010 generated 60% of total recharge . Similarly, in southern India  and the southwestern USA , focused recharge via losses from ephemeral river channels, overland flows, and floodwaters is documented .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report