CHENNAI: The flooding of Chennai city was not because of to formal indecision or mismanagement of launch of water from the Chembarambakkam lake into the Adyar river, Tamil Nadu chief secretary K. Gnanadesikan explained on Sunday.
In a statement issued listed here, Gnanadesikan mentioned the flooding was induced mostly because of to the really high rainfall in November, which was adopted by much more rain in Chennai, Kanchipuram and Tiruvallur districts on December 1.
Referring to media reports that the current flooding of the Adyar river that killed numerous men and women and ruined livelihood and assets of millions of folks was the outcome of inappropriate administration of drinking water releases from the Chembarambakkam lake.
Gnanadesikan said the India Meteorological Division (IMD) on November 30 and December 1 experienced issued advisories of isolated weighty rainfall and not 50 cm rainfall as described by some media teams.
Gnanadesikan said that in meteorological terminology, ‘isolated’ signifies only in one or two areas, heavy rainfall is among six.4 cm to twelve.four cm, even though really large rain means twelve.four cm to 24.four cm.
He dismissed as “malicious” and “canards” the allegations that engineers current at the Chembarambakkam lake ended up waiting around for recommendations from the principal secretary of the Community Works Department and the main secretary and the imputation that the officers had been awaiting clearance from Main Minister J. Jayalalithaa.
Gnanadesikan said the allegations had been not supported by the water release info of the reservoir.
In accordance to Gnanadesikan, as for each the policies for flood regulation of the compendium of rules of regulation, the degree of h2o reservoirs needs to be maintained at two ft underneath entire tank degree although monsoon is nonetheless energetic.
He mentioned the policies balance the pursuits of drinking water storage for the shortage period, the need to have to handle flooding in downstream places and the basic safety of the reservoir.
Gnanadesikan stated ample flood warnings had been issued to men and women residing in reduced lying locations on December 1, and over forty seven,300 people ended up evacuated from these locations.
He mentioned a lot of tanks ended up breached because of to weighty rains and the h2o flowed into the Adyar river.
“The circulation in Adyar river attained its entire capacity because of to the surplus from Chembarambakkam tank, the inflow from the catchment places of Adyar within Chennai metropolis and the surplus received from the other tanks,” he mentioned.
“In see of the heavy movement in the Adyar river, the higher depth runoff of nearby rainfall in Chennai city and adjoining urban areas could not fully drain into the Adyar and consequently contributed to the inundation of the town,” he stated.