Climate change has profound implications for managing freshwater resources and the people and species dependent on those resources, but water management long predates any awareness of anthropogenic climate change. Indeed, large-scale water management has been one of the great themes of the nineteenth and twentieth centuries worldwide.

This paper serves as an input for the thematic, regional and political processes of the 5th World Water Forum and focuses on the challenges related to water, climate change and food security. Recent publications related to the anticipated impacts of climate change on water and agriculture are comprehensive, but a global analysis of specific impacts remains limited.

Water is the key medium that links atmospheric temperature rises to changes in human and physical systems. Climate change will alter the hydrological cycle in many ways. The trigger is the warming of the atmosphere and oceans, which will change major weather systems.

Climate Change has become an urgent and pervasive preoccupation across the globe. It is a global challenge which requires an ambitious global response. India and other developing countries would be among those most seriously impacted by the consequences of Climate Change. It is for this reason that India, along

The Himalayan region features a great diversity of climates, hydrological and ecological systems, as well as a diversity of cultures and communities. Despite their variety, all of these natural and social systems depend on the region

Agricultural producers, in particular the smallholder farmers of developing countries, are facing unprecedented challenges in the 21st century.