NEW DELHI: Mumbai will on Friday get an
integrated flood warning
system - known as IFLOWS-Mumbai - which will boost the city’s resilience by providing early warning for flooding specially during high rainfall events and cyclones. Bengaluru and Kolkata may also get such system by next year.
The system has provisions to capture the urban drainage within the city and predict the areas of flooding in advance so that the civic body can issue alerts asking people not to visit those vulnerable zones during certain period.
Union minister Harsh Vardhan and Maharashtra chief minister
will jointly launch this system through video conference on Friday, making Mumbai the second city in the country after Chennai to have such integrated warning system.
“We’ll hopefully be able to launch similar system for Kolkata and Bengaluru by next year. It’ll depend on availability of all relevant data. We have been working on it for other cities as well,” Madhavan Rajeevan, secretary, ministry of earth science (MoES), told TOI on Thursday.
He said, “This state of art Integrated Flood Warning system is developed by the MoES, using the ministry’s in-house expertise, in close coordination with the Municipal Corporation of Greater Mumbai (MCGM).”
This GIS-based decision support system has all relevant details - such as land topography, land use, infrastructure, population, lakes, creeks and data on river bathymetry of all rivers namely Mithi, Dahisar, Oshiwara, Poisar and Ulhas - which will help it predict the vulnerable areas in advance, keeping in view the rainfall forecasts.
Since extreme rainfall events are on the rise in India driven by warming temperatures and changes in the monsoon due to climate change, such system will be quite useful to protect lives and properties.
Mumbai has the history of flooding during extreme rainfall events. The city had faced massive floods in July 2005 when it received a rainfall of 94cm, a 100 year high in a span of 24 hours. It had paralysed the city completely. The floods of August 2017 had also brought the city to a standstill.
The IFLOWS-Mumbai is built on a modular structure and comprises of seven modules, namely data assimilation, flood, inundation, vulnerability, risk, dissemination and decision support system. It incorporates weather models from National Centre for medium Range Weather Forecasting (NCMRWF), India Meteorological Department (IMD) and field data from the rain gauge network stations, setup by different agencies.