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With overnight rains bringing dense inflows, the floodgates of 2 large reservoirs of Chennai astatine Chembarambakkam and Poondi were opened wider to modulate the h2o level and forestall flood hazard connected Wednesday (October 22, 2025).
The well-marked debased unit area that lies implicit southwest Bay of Bengal disconnected the Tamil Nadu seashore brought torrential rains successful respective parts of Tamil Nadu. The 90 large h2o bodies successful the State present person a retention of 87.7% of their full capableness of 224.34 1000 cardinal cubic feet.
Click present to travel unrecorded updates connected monsoon rains connected October 22, 2025
Likelihood of depression
As it continues to determination northwestwards, the Regional Meteorological Centre (RMC), Chennai has predicted a anticipation of the strategy gathering spot arsenic a slump implicit the southwest and adjoining westcentral Bay of Bengal disconnected northbound Tamil Nadu and southbound Andhra Pradesh coasts by Wednesday evening.
It is apt to determination crossed northbound Tamil Nadu, Puducherry and southbound Andhra Pradesh coasts during the adjacent 12 hours.
Water bodies
Chembarambakkam reservoir, Chennai’s cardinal drinking h2o root dispersed implicit 25.51 sq.km., received an inflow of 2,170 cubic feet per 2nd (cusecs) of water. This besides includes h2o diverted from Poondi reservoir done nexus canal.
Officials of the Water Resources Department said the h2o bodies upstream feeding the reservoir are accelerated filling up. The h2o level astatine Chembarambakkam reservoir stands astatine 20.84 feet connected Wednesday (October 22) compared to 18.52 feet connected October 18.
With retention rising to 2,815 millon cubic feet (mcft) against 3,645 ft, the section has accrued h2o discharge from 100 cusecs to 500 cusecs into Adyar stream connected Wednesday morning. The measurement would alteration equilibrium retention and accommodate dense inflows. The section has issued flood informing to areas downstream and on Adyar stream
Similarly, the h2o merchandise from Poondi reservoir has been stepped up to 4,500 cusecs to support its h2o level astatine 33.05 feet, 2 feet little than afloat level.
Rainfall received
Northeast monsoon successful its vigorous mode pounded respective districts crossed the State. Periyakalapet successful Puducherry recorded highly dense rainfall of 25 cm successful the 24 hours ending 8.30 a.m. Various upwind stations and rainfall gauges successful and astir Puducherry, Villupuram and Cuddalore received precise dense rainfall.
Widespread, aggravated rainfall lashed galore different districts similar Chennai, Kallakurichi, Tiruchi, Karur and Chengalpattu too.
Forecast
In its nowcast, the RMC has predicted airy to mean rainfall to screen northbound districts of Tamil Nadu including Chennai, Ranipet and Cuddalore and besides Kanniyakumari territory isolated from Puducherry till 1 p.m.
The RMC has updated forecast and restricted reddish alert to Ranipet and Tiruvallur districts till 8.30 a.m. connected Thursday (October 23). Many different northbound Tamil Nadu districts including Chennai person been sounded orangish alert for the aforesaid period.
