31 years from now, Mumbai& #39;s outfall levels, or points where the city& #39;s drains and sewers enter the Arabian Sea, can be below the sea level. If that happens, the back flow of water from the sea can submerge us. [Thread]

Architecture students at the School of Environment and Architecture (SEA) tried to understand what could be done. They picked Borivali and created a flooding-risk map. The pink line is the projected high tide line in 2051.

Then they created a map marking the settlements that would be vulnerable. They found that nearly 23% of the urbanised area in Borivali will be submerged during a high rainfall + high tide event. One in every five people in “squatter settlements” is vulnerable.

They classified the area into five zones: 0 to 4, (0 most vulnerable, 4 the least) and came up with solutions such as stream beds/ holding ponds, replanting mangroves in Zones 0/1 and designs for flood-resistant built form in others.

Their study looked back as much as it looked forward: At land reclamation, obstruction in natural water systems, dysfunctional drainage networks, and a lot more. Read here: https://mumbai.citizenmatters.in/mapping-floods-is-mumbai-at-the-risk-of-being-submerged-20506">https://mumbai.citizenmatters.in/mapping-f... @citizenmatters @rajbhagatt @liquidperson