Groundwater recharge in the arid zone of Australia was studied using various techniques like geological mapping and hydrogeophysics. A big rainstorm in 2015 only temporarily stopped a long-term decline in groundwater levels. Smaller rain events in 2016 had a similar effect. The size of a flood doesn't always determine how much groundwater gets recharged. A deeper aquifer didn't respond to surface water flow, suggesting it's isolated and older. This shows that changes in climate may not always lead to changes in groundwater recharge in dry areas. More research is needed to understand how recharge works in arid regions.