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B. CONCRETISATION CAUSES URBAN FLOODING/WATER LOGGING:
Due to reduced absorption of rainwater on the land and consequent reduction in water percolation, the water accumulates and is spread into different directuons, causing intense urban flooding and water logging. Flooding in urban areas causes immense damage to the environment as well as human health, every year. Some direct impacts of urban flooding and water logging include loss of top layer soil leading to reduced carbon sequestration, contamination of ground water, failure of storm water drainage system, mixing of sewage with drainage water, spread of diseases and contamination of drinking water etc. Certain indirect impacts include air pollution due to stagnant traffic etc. The Intergovernmental Panel report on Climate Change on Climate Change 2021: The Physical Science Basis released in August 2021 also warned about the extreme repercussions of climate change that India could face in the coming years. Increased incidents of urban flooding are one of the extreme events that will become common.