Articles on Irrigation

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Trees killed by drought and an outbreak of bark beetles in California’s Tahoe National Forest in 2023. AP Photo/Godofredo A. Vásquez

Trees ‘remember’ wetter times − never having known abundant rain could buffer today’s young forests against climate change

Water availability regulates tree growth and can have ‘legacy effects’ long after conditions change.
AAP Image/Supplied by Natural Resources Access Regulator

Water theft laws and penalties in the Murray‑Darling Basin are a dog’s breakfast. Here’s how we can fix them

Inconsistent laws and penalties for water theft in the Murray-Darling Basin make compliance and enforcement especially challenging. But it doesn’t have to be this way.
Lesotho’s Katse Dam, which forms part of the Lesotho Highlands Water Project, with underground tunnels carrying this water to South Africa. Walter Dhladhla/AFP/Getty Images

South Africa’s crucial water supplies from Lesotho: what the six‑month shutdown means for industry, farming and residents

The tunnel bringing millions of litres of water from dams in Lesotho to South Africa is to undergo a six-month repair. This could leave residents of Gauteng in South Africa short of water.
Circular irrigation for growing hay and alfalfa near Corcoran, Calif. − a water-intensive system that relies on groundwater pumping. George Rose/Getty Images

Humans are depleting groundwater worldwide, but there are ways to replenish it

Rapid and accelerating groundwater level declines are widespread in dry climates where groundwater is used for irrigation. But some communities have found ways to turn things around.
Suburban development in Maricopa County, Arizona, with lakes, lush golf courses and water-guzzling lawns. Wild Horizon/Universal Images Group via Getty Images

What Arizona and other drought‑ridden states can learn from Israel’s pioneering water strategy

Arizona is considering a multibillion-dollar desalination project to address its urgent water needs. Three water experts call for a go-slow approach and point to Israel as a role model.
A well in Afanasyeva village, Mykolaiv region, damaged by flooding after the Kakhovka Dam breach. Anatolii Stepanov /AFP via Getty Images

Kakhovka Dam breach in Ukraine caused economic, agricultural and ecological devastation that will last for years

Breaching the Kakhovka Dam and reservoir had all the hallmarks of a scorched-earth strategy. Two expert observers of the Russia-Ukraine war explain this event’s destructive long-term effects.

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