Two columns of army's Garrison Infantry Battalion have been pressed into service in Tambaram and Oorapakkam after the Tamil Nadu government sought military assistance. The Navy is also on stand-by.
All flight operations at Chennai airport were partially suspended tonight until further review and a number of flights disrupted as waters inundated the runway and the tarmac.
Departures of flights have been allowed till 2330 hours while arrival has been suspended.
Adding to the woes, Chennai city and neighbouring districts braced for more rains as the Met department predicted heavy to very heavy rains in the next four days.
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Most areas of Chennai, which have already been lashed by rains for over a fortnight, went under water today severely disrupting train and bus services and forcing postponement of half-yearly school exams and closure of schools in Chennai, Kancheepuram and Tiruvallur districts.
Even in hitherto unaffected areas, people complained that water entered their homes and roads flooded with surging waters. Several areas in the city went without power as supply was cut as a safety precaution.
The situation has worsened in suburban areas of Tambaram and Mudichur after the Chembarakam lake overflowed and an unprecedented 26,000 cusecs of water was being released flooding the downstream areas. These areas had already suffered heavily during the earlier spells of rains.
Rescue work will begin and NDRF would deploy more teams if required. Teams carrying boats will also be sent to Kancheepuram and Tiruvallur districts.