Claudia Sadoff is Director General of the International Water Management Institute, Colombo, Sri Lanka.

Coming to Grips with Water Security in the Face of Climate Change

Collecting rainwater data on the farm. Tana River watershed, Kenya. 30 November 2016. © CIAT/ Georgina Smith

In a landmark study published a decade ago, the International Water Management Institute (IWMI) suggested that under likely scenarios the world's freshwater supplies should be adequate to meet future demands from agriculture, industry and other sectors.