India, July 22 -- Investment for climate-resilient and low-carbon intensive infrastructure in Indian cities, facing a triple threat of flooding, water scarcity, and heat, is well below what is required, a World Bank report released on Tuesday said.

The report titled "Towards Resilient and Prosperous Cities in India" estimated investment requirement of $2.4 trillion by 2050 and $10.9 trillion by 2070. This is based on a conservative scenario of 43% urbanisation by 2050 and 52% 20 years later.

The report said the costs are high and the benefits are higher and added at least 60% of existing cities can be covered by urban flood risk mitigation measures within 15 years, with investments of about $150 billion. It said heat mitigation actions ...