Climate Change: Impact, Adaptation And
Vulnerability In The Water Supply Of
Kathmandu Valley
Author(s)
P. Kumar Jha
Abstract
This study has identified the vulnerability of the water supply system in
Kathmandu Valley, Nepal from the impact of the worst case of climate change
and has also suggested adaptation strategies to deal with the situation. For this
the observed precipitation data, SimCLIM software and the existing literature
were used. This study found that existing strategies are insufficient and more
than five million people would be deprived of the minimum needed water by
2050 under the driest scenario of climate change. Similarly, the reduction in low
flow under the driest scenario or frequent extreme rainfall events under the
wettest scenario could further degrade the water quality and increase the
vulnerability of water supply infrastructures. A combination of strategies can
help manage the situation until 2050. The situation, however, would become
worse after 2050 due to the projected sharp reduction in precipitation, which
would in turn, make all precipitation-dependent water supply strategies
ineffective. The result of this study should be used as an indication only as there
is no agreement among General Circulation Models (GCMs) in projecting future
precipitation. The result of this study is useful for agencies and individuals
involved in water supply related planning and policy making
Keywords: water scarcity, climate change, Kathmandu Valley, worst case
scenario, SimCLIM.
1 Introduction
Access to clean water is one of the most important human needs. Climate change
combined with the other socio-economic factors such as high rates of population
growth and urbanization can reduce the availability of fresh water in the urban
Keywords
water scarcity, climate change, Kathmandu Valley, worst case
scenario, SimCLIM.
Related Book
Other papers in this volume
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