Mumbaikars be warned. The Brihanmumbai Municipal Corporation (BMC) has said that the city is likely to experience flooding between June 13 and June 18 as there will be high tides which will be over 4.5 metres in this period. Since tidal activity is a matter of concern during the monsoon, the BMC has identified days with high tides and issued advisories to all its agencies and citizens.
High tides, when accompanied by heavy rainfall, can cause flooding in the city as the sea water brought in by the tides will prevent rainwater from being drained into the sea. An official with the BMC disaster management department said, “If there is heavy rainfall coupled with high tides, there is very little any storm water pump can do. The water will not recede until one of these situations abates.”
This year, Mumbaikars will have to watch out for seven neap tide days apart from the high tide days during the monsoon, to avoid water-logging woes and risk of accidents. There are seven neap tide days — June 7, July 7, August 19 and 20, and September 17, 18 and 19; besides, there are 24 high tide days this monsoon.
The BMC has, for the first time, released a list of neap tide days when the difference between the low and high tide is not much and the discharge of storm water into the sea is very slow. Similar to the effect of high tide, neap tide too can lead to excessive flooding. “So, along with high tide days, the BMC has circulated a list of neap tide days to the traffic police, the fire brigade and other agencies,” said a civic official from the disaster management department.