Tuesday, November 15, 2022

Rejuvenating Mumbai’s rivers

A long-pending recommendation of the Chitale committee which probed the Mumbai deluge of July 26, 2005 -- rejuvenation of the Dahisar and Poisar rivers – will finally be carried out by the BMC.

This includes widening and dredging the rivers, removal and rehabilitation of 200 slums on their banks and construction of `nullah’ interceptors to stop industrial effluents, sewage and untreated waste from entering the rivers. The project will collectively cost Rs 1,438 crore and take three years. 

The two rivers which originate from Tulsi Lake in the Sanjay Gandhi National Park are no better than sewers today. Incidentally, the Chitale committee had remarked that the BMC, in its development plan, had deliberately referred to these rivers as “nullahs” to keep them out of the purview of river laws.

This river rejuvenation project is also a part of the BMC’s Brihanmumbai Storm Water Disposal (Brimstowad) project, launched in 2005 to prevent floods. Under this project, the civic body had planned to augment drainage, construct new drains and widen and desilt nullahs to increase their capacity.

The sewerage treatment plant (STP) installed for the Poisar river at 10 locations will have the capacity to treat 33.50 MLD of sewerage on a daily basis. The Dahisar river STP, set up at two locations, will have a capacity to treat 6.5 MLD.

The project also envisages a 3,153-metre-long service road along the banks of Poisar river and a 1,165-metre-long service road along the Dahisar river as well as roadside drains.



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