Mumbai: A study by the Indian Institute of Technology (IIT) Bombay has recommended drainage systems and groundwater holding ponds as measures to prevent flooding. Flood vulnerability and mitigation assessment conducted in Dadar, Lower Parel and Kurla region aimed at understanding ways to prevent flooding of railway tracks during monsoon.
IIT Bombay carried out the study after the Mumbai Rail Vikas Corporation (MRVC) approached the mitigation assessment to establish future mitigation measures for the flooding of railway tracks during the monsoon, thereby shutting down local rail services.
The Brihanmumbai Municipal Corporation (BMC) has been asked to provide a sewerage system to transport sewage from the basins so that sewage does not flow into the sewers.
The IIT-Bombay report summarizes, “The latest data on population, topography, existing drainage and available data is needed to provide the drainage system. There is no such data available for the present study.
Furthermore, the report suggests an additional holding pond to prevent water from flowing into the basin between Dadar and Parel.
“In its current form, the holding pond and pumping station system supplies only about 10 percent of the watershed contributing to the flooding of Dadar and Parel. Flooding from the Dadar Hindmata area caused flooding in the railway premises. The underground holding pool in the stadium is recommended as a permanent holding pool, ”the report said.
The report also suggests additional railway side drains along the rails in Kurla, installation of latest rain gauges, widening of existing drains and construction of new drains to prevent flooding on railway rails.
In 2021, local rail services will be shut down for 15 hours in June on the central rail network.