Decades of less rainfall have cut replenishing of groundwater to 800-year low in WA

Tue, 1 Aug 2023 12:42:25 +1000

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
<https://theconversation.com/decades-of-less-rainfall-have-cut-replenishing-of-groundwater-to-800-year-low-in-wa-208751>

"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
replenishment of groundwater in the region to an 800-year low.

Our findings highlight the immediate threat of climate change to water security
for communities in the south-west – the region between Geraldton and Albany,
including Perth. Groundwater is the major source of water used in Perth and
many rural towns.

Rainfall across south-west Australia has been decreasing since the late 1960s.
The region’s drying climate means rainfall may no longer be reliably
replenishing its groundwater."

Cheers,
       *** Xanni ***
--
mailto:xanni@xanadu.net               Andrew Pam
http://xanadu.com.au/                 Chief Scientist, Xanadu
https://glasswings.com.au/            Partner, Glass Wings
https://sericyb.com.au/               Manager, Serious Cybernetics

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