South-west Australia relies on groundwater for three-quarters of its water use. But a new study of the region’s caves has found a drying climate is having a dramatic impact on this precious resource.
Sprinklers water a lettuce field in Holtville, California with Colorado River water.
Sandy Huffaker/AFP via Getty Images
Two decades of drought have reduced the river’s flow by one-third compared to historical averages. The Biden administration is considering mandatory cuts to some states’ water allocations.
A water-vendor collects water in jerrycans to sell.
TONY KARUMBA/AFP via Getty Images
Jordan is planning a major desalination plant on the Gulf of Aqaba – but will it damage nearby marine ecosystems?
Following historic drought in 2021, reservoir levels dropped down in the Hoover Dam on the Colorado River, which gets its waters from the melting snowpack from the Rocky Mountains of Colorado and Wyoming.
(pxhere.com)
If you’re on holidays, the water may taste different. But is it safe to drink?
Hundreds of freshwater basins across the world, including the dried-up Santa Olalla permanent freshwater lagoon, in Spain’s Doñana National Park, are the most likely to experience social and ecological impacts due to freshwater use.
(Donana Biological Station/CSIC)
While we know how global changes in freshwater pose risks to humans and ecosystems, we know less about how people and ecosystems will respond to these global freshwater challenges.
Unless action is taken, the UK will be unable to supply its own water needs in the future – we should look to water-scarce regions such as California for inspiration.
Australian politicians have a history of opting for high-cost, high-emissions desalination projects. The Queensland government is still wary of using the largely untapped resource of recycled water.
La Niña is only part of the problem. The long-term driver of increasing drought – even in areas getting more rainfall overall – is the rapidly warming climate.
NASA’s Landsat satellites have been monitoring changes on Earth’s landscape for 50 years.
NASA illustration
When Indigenous peoples lose their river flow to dams, satellite programs like Landsat – which is celebrating its 50th anniversary – can help them fight for their resources.
Alien pine trees, which use substantially more water than the native vegetation of the Cape Mountains, reduce river flows to dams that supply the city’s water.
Martin Kleynhans
The manner in which people access water differs according to income. People in high- and middle- income areas tend to have piped connections in their homes.
Given long-term forecasts for growing urban populations and an increasingly variable climate, local authorities will have to think about how best to encourage people to conserve water.