7 months ago
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With Cyclone Ditwah predicted to bring dense rainfall implicit northbound Tamil Nadu, including Tiruvallur, this weekend, the shutters of Chennai’s 3 drinking h2o reservoirs were reopened connected Thursday to merchandise a minimal quantity of h2o and make flood buffer space.
Floodgates of the Red Hills reservoir were opened for the 5th clip this northeast monsoon to fto retired a minimum of 100 cubic feet per 2nd (cusecs) of h2o arsenic a precaution against flooding successful the downstream areas.
The Water Resources Department (WRD) has been maintaining a flood cushion this monsoon by controlling h2o discharge according to rainfall and inflow.
Recalling that the shutters of the Red Hills reservoir were closed connected November 19, WRD officials said the waterbody present has a retention of 2,823 cardinal cubic feet (mcft), which is 85% of its full capacity. “We program to gradually measurement up the h2o discharge into the surplus people and support the reservoir retention astatine 80%. This volition assistance store dense inflow during the bedewed spell expected during the play and avert flash floods,” an authoritative said.
About 600 mcft, which translates to a fortnight’s drinking h2o supply, was discharged from the Red Hills reservoir since the shutters were archetypal opened connected October 15. With different period to spell earlier the monsoon ends, the retention levels person been regulated to support a comfy level and trim flood risk, officials said.
Similarly, 200 cusecs of h2o was released from the Chembarambakkam and Poondi reservoirs connected Thursday. Poondi reservoir, built crossed Kosasthalaiyar stream successful Tiruvallur district, receives a flood run-off of astir 800 cusecs from catchment areas and different 470 cusecs from Araniyar anicut.
On Thursday, the city’s 5 waterbodies, including Thervoy Kandigai-Kannankottai reservoir, had a combined retention of 9,665 mcft, which is astir 82% of their full capacity. This is simply a important summation compared to the aforesaid time past year, erstwhile the 5 reservoirs unneurotic had a retention of 5,435 mcft. The disposable resources would assistance support regular h2o proviso for a year, officials said.
