The Himalayan region is considered to be the world’s youngest mountain ecosystem and is aptly called the water tower of Asia covering over 33,000 sq. kms of glaciers and providing 8.6x106 cubic m of freshwater to rivers draining from the mountains annually. Recent WWF and other studies have identified temperature rise as the cause of increasing glacier melt in India and Nepal. The rate and magnitude of temperature rise, coupled with changes in water flow regime from run off are key factors determining the social and ecological implications of climate change. The greatest impacts will be felt by large river systems like the Ganga which are predominantly fed by the flow from the glaciers. Millions of people in India and Nepal are dependent on these river systems and the basins for their livelihoods and enhanced ecosystems stress can threaten both humans and biodiversity. The limited adaptive capacity of communities and biodiversity can therefore lead to regional imbalances in the economic growth and development of the subcontinent. Decreased river flow can also adversely affect the power generation and irrigation potential for many countries in the region. The CCIFEH project in India and Nepal has a long term vision aimed at minimising the impacts of climate change for selected communities and ecosystems in Himalayan river basins. By 2015 the programme seeks to implement concrete adaptation measures through improved understanding of climate impacts. Influencing local, national and regional policy processes will form an important element of the project towards mitigating the impact of Green House Gas (GHG) emissions on water resources,agriculture,powerand energy.