Within the aftermath of heavy water logging that Mumbai skilled throughout the monsoon this yr, the Brihanmumbai Municipal Company (BMC) will appoint a technical advisor who will examine causes for waterlogging within the metropolis, the design of roads and stormwater drains, and supply options and technical assist.
The advisor shall be given an inventory of persistent waterlogging spots, corresponding to Hindamata, Gandhi Market close to Matunga, Chembur colony, Andheri subway, for the examine.
A senior officer of the stormwater drains division stated, “We’re appointing a advisor for Mumbai to discover a everlasting answer to waterlogging at problematic spots within the metropolis. This shall be an in depth survey, with a particular deal with persistent flooding spots and low mendacity areas. We have to test if a everlasting answer might be discovered, corresponding to deep tunnelling.”
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The officer added, “Regardless of our efforts, waterlogging was fast to floor throughout town this yr too.”
The BMC will rent a advisor with technical and engineering experience for stormwater drains together with prior expertise in dealing with such initiatives.
The choice comes on the again of the final 4 years of allocating and spending devoted budgets to check and discover options to curb waterlogging at particular person 273 spots throughout town. After the monsoon of 2018, the BMC had modified the methodology by micro-planning to take care of flooding.
The stormwater drains division was tasked with learning every persistent flooding spot individually and provide you with personalised options to forestall waterlogging. Whereas this methodology didn’t change the sooner plan of cleansing water entrances, laterals and desilting drains and nullahs, it was anticipated to curb flooding.
On August 4 and 5, Mumbai skilled very heavy rainfall that resulted in extreme waterlogging in numerous components of town. It additionally took a number of hours of the water to empty out, like in 2019.
Subsequently, the BMC pumped out 17,145 million litres of water from town. That is equal to twice the capability of Tulsi lake – 8,046 million litres, one of many seven lakes that offer water to Mumbai.
Waterlogging was reported at 9 distinguished places within the island metropolis, 4 places within the Japanese Suburbs and three places within the western suburbs. Many areas submerged in two or three ft deep water. In South Mumbai, many places that had not flooded beforehand have been inundated this yr, corresponding to Babulnath, Girgaum Chowpaty, and Nariman Level. Nevertheless, this may be partly attributed to the heavy rainfall. On August 5, the Colaba climate station recorded 293.8mm of rain in 12 hours (between 8.30 am and eight.30 pm), the best ever in August since 1974.
Out of the 273 water logging spots recognized throughout town over 2017 and 2018, the BMC stated solely 69 spots remained to be tackled earlier than the monsoon of 2020. Furthermore, 49 different flooding spots out 273 have been categorised as localised flooding spots – the place waterlogging takes place on account of an area and non permanent purpose corresponding to very heavy rainfall in a brief length mixed with excessive tide, therefore they don’t face the specter of submerging each monsoon similar to persistent flooding spots.
The BMC’s funds for 2020-21 declared that throughout the monsoon of 2020, solely 24 waterlogging spots would stay, because the others had been handled over the previous three years. Nevertheless, with the outbreak of Covid-19, the civic physique misplaced out on essential months of March, April, and Might for its monsoon-preparedness work and was unable to finish the fixing strategy of over 40 waterlogging spots this yr.