Decades of less rainfall have cut replenishing of groundwater to 800-year low in WA
- Written by Stacey Priestley, Research Scientist, Environment Business Unit, CSIRO

Groundwater is the world’s biggest source of easily accessible freshwater. Despite its importance, we know very little about how this resource is replenished over time. In a world-first study, we have used caves to show the decades-long decline in rainfall in south-west Australia has reduced the...