State of the Planet

News from the Columbia Climate School

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How Will Climate Change Impact Water Resources?

Access to adequate fresh water supplies is a critically important societal challenge posed by climate change. With rising heat and shifting rainfall patterns, and reduced water storage resilience, fresh water supplies are already diminishing in the western United States, Mexico, the Middle East, and Mediterranean. Water shortages have been implicated in recent international conflict, and a recent Department of Defense study underscores the geopolitical importance of this problem.

Center for Climate and Life scientists focus on the future security of water resources, storage, and access, guided by an improved understanding of the forces that are changing water security at international to local scales. Their research results in informed policy and business decisions that ensure sufficient, reliable access to this basic human need.

Visit climateandlife.columbia.edu to learn more about the Center’s mission to understand how climate change impacts life’s essential resources — food, water, and shelter — and to develop sustainable energy resources.

Photo of the Earth from space with the text "Lamont at AGU25" on top.

AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More

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jesse
jesse
2 years ago

the hyperlink in this article to the DoD water-conflict source is broken.

Khalidullin Oleg
Khalidullin Oleg
8 years ago

Not climate affects water resources, and changes in the state of water affect the climate.
It is known that more than 60% of water falling on land, a person deprived of its natural functions. Water from arable land, artificial reservoirs, landfills returns to the sky unchanged. Even more water evaporates in industrial and communal technologies. The natural link in the transformation of water is the passage through the food and plant organs. Artificial evaporation already prevails over the natural and create a new phenomenon of atmospheric phenomena. Hence the natural disasters and the approach of a global catastrophe. It is urgent to return natural evaporation to nature and reduce artificial ones.