In the aftermath of the extreme flooding event of July 2005, the DMC has mapped the locations of chronic and localized flooding spots. Using the Quantum GIS Software and the Existing Land Use (ELU) maps developed by the Planning Department of the MCGM, we have determined the extent of direct exposure of residents around the flooding spots. In addition to the flooding spots, the number of people located near the landslide prone areas has also been estimated in our analysis. This gives us an added dimension to understand the vulnerability of residents.

The types of land uses and number of slum and non‐slum residents located in the 500m buffer zone of the chronic flooding spots, 200m buffer zone of the localized flooding spots and 100m buffer zone of landslide prone areas, where applicable, have been estimated through the exposure maps developed by us (seen in Annexure A.2). The assumption for calculating the numbers in Table A.1.1 is that the residential density will be the same across the entire ward. Hence, for each flooding spot, the total residential area covered around the buffer zone of the flooding spot is multiplied by the residential density to arrive at the total number of vulnerable people. Across the flood‐prone wards, more than 20% residents are exposed to recurrent floods as they reside in either chronic or localized flooding spots. In M West, more than 47% population is exposed to floods followed by 30% population in F North and L Ward.

In order to understand more about the residents living in flooding spots, the study has used the different types of residential land uses is provided in the ELU maps. Their respective percentages as provided in the ELU maps have been used to determine the number of people in each type of residential land use around the flooding spot using the given residential density. Table A.1.2 gives details of the different types of residences located in the flooding spots, such as, slums, chawls,<sup>11</sup> apartments, government housing and individual housing. Slums and chawls are mostly occupied by poor or low‐income households. Apartments and government housing usually have a mix of low and middle‐income families. High rise apartments and individual houses are occupied by higher middle income and rich households. We see sizable slum population in the selected wards getting exposed to floods, as seen in Table A.1.2. For instance, in L Ward, M West and H East, more than 30% of the slum population is directly vulnerable to recurrent floods. In P North and F South, sizable population of chawl residents is vulnerable. Similarly, percentage of apartments belonging to low‐income and middle‐income households with direct exposure to recurrent floods is very high across all wards.

Besides the types of residences located near the flooding spots, we have analyzed the types of other land uses to get better understanding of the asset exposure to recurrent floods. As seen in Table A.1.3, all the selected wards have a number of retail shops, markets, office blocks and industrial units

> 11 Chawls are large buildings divided into many separate and often single‐room rental tenements offering cheap and basic accommodation. Such buildings were constructed in Mumbai many years back to provide housing to textile mill workers and other labourers who migrated into the city. Many of these buildings are in poor and dilapidated conditions now.

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