The gin-clear waters of the Kilsby sinkhole, a popular freshwater diving site, provide visibility of up to 65 metres. But water levels have dropped 1.5 metres between January and March 2025. It’s a long-term decline: the vast groundwater network in the limestone crust that straddles the border between South Australia and Victoria – an area of such agricultural richness that it has been dubbed the Green Triangle – is in decline, thanks to decades of over-extraction and declining rainfalls.
That sinking feeling: Australia’s Limestone Coast is drying up
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National Chapters
Local professional, scientific and social benefits and promotion of sustainable groundwater use
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Contributing to the science of groundwater and undertaking outreach, education and training
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