How to Grow More Food with Less Water

Climate change has led to shorter, more violent rainy seasons in the highlands around Lima, Peru, meaning that - even though there is theoretically enough water during the rainy season to sustain the local population, it flows downhill too quickly, leaving residents short of clean water during the dry season. Now, an organization called Condesan is helping the community to restore ancient stone canals from the seventh century that will help to store water from rainfall through the dry season and supply residents with a steady water source.

In Australia, the Murray-Darling Basin Ministerial Council was formed after a severe drought to bring together federal, state and regional governments and bridge parochial concerns. It was meant to manage the basin as a whole and end overuse and salinization of farm land, leveraging new technologies to adapt to new realities.

In the face of a prolonged drought, residents of Melbourne, Australia, cut water consumption in half by capturing rainwater and using efficient toilets and washing machines.

New solar-powered irrigation systems in the Chotanagpur Plateau region in India are giving farmers more dependable water and allowing them to diversify their crops, allowing them to also grow their income. Many farmers from a local village used to migrate to other places to search for work, but a new irrigation system has allowed them to grow cauliflower for a competitive price. While the cost of buying and installing a solar-powered irrigation system can be high, this form of irrigation could be more climate-friendly and help stabilize crop production.

Israel experienced extreme drought a few years ago and its water supply was very low. National campaigns to install desalination plants have helped Israel turnaround its inadequate water supply into a surplus. The water scientists who have helped make this surplus see an opportunity for water diplomacy and the de-politicization of water in the Middle East so that more of it can be shared with other geographies.

An AI-powered underwater sensor system developed by KMFRI and ShoShin Innovation Hub detects dangerous drops in dissolved oxygen in Lake Victoria and sends SMS alerts to fish farmers. This enabled them to move their cages in time and successfully averting a mass fish kill in February 2026 that would have threatened hundreds of tilapia cages at Dunga Beach.

A government scheme in Pakistan involves the construction of water-harvesting dams in areas that experience droughts, which allows farmers in the region to use the irrigation water from the dams for their crops. One farmer is growing onions and wheat and because of the access to water, his income has increased more than 60 percent. There are concerns about how helpful the water from the dams will ultimately be in the arid region, but there are plans to build more dams in the next few years.

In the arid Karnataka region of India, millet is largely replacing rice as a staple crop. Not only does this drought-resistant grain require far less water and pesticide, but it's also highly nutritious. Perceptions are also beginning to change. What was once viewed as subpar food is starting to look like a winner in an increasingly thirsty world.

Environmental refugees in Ethiopia flee their country because there are no jobs without healthy land. A group of former refugees have returned to Ethiopia with a business venture in Gergera to improve the land by regreening efforts, foresting, and building water conservation systems. The new businesses demonstrated such positive effects that the region is now on the brink of resettlement due to improved environmental conditions.

Cameroon was plagued by droughts, water-related illnesses, and an influx of refugees--all of which required a surplus of clean water. The government devised solar panel water distribution systems, which brought fresh water for irrigation. The surplus also inspired citizens of Cameroon to start small businesses that used the water, including brewing beer.