Providing basic necessities and ensuring safety and quality of life in a changing climate condition have become complicated management issues in the megacities of India. Cities are already under pressure from the rising population and development activities. Existing urban infrastructure is quite inadequate to face these challenges. Water and power have become expensive and the supply is unreliable. Changing climate pattern also causes
serious health issues. Increasing intensity and frequency of tropical storms, and the changing sea level pose threat to three of the four megacities. Environmental degradation worsens the
impact of climate change. The situation leads to social issues such as competition and conflicts. Current strategies and policies for climate change impact mitigation and control of
environmental degradation are not efficient.