Saturday, Oct 19, 2002
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The Nungambakkam and Meenambakkam observatories recorded 7 cm and 8 cm respectively. Chembarampakkam and Tambaram received 9 cm and 6 cm. But, the rainfall at Poondi or Red Hills was less.
At Poondi, the figure was 5.6 cm, while at Red Hills, it was 2 cm and at Cholavaram 2. 6 cm.
In all, it meant that two days' supply was added to the storage of the city reservoirs. The combined storage stood at 1,666 mcft (million cubic feet), an increase of 40 mcft over yesterday's position.
Though the northeast monsoon is yet to set in, the water managers are keeping their fingers crossed as the storage position, according to them, is a "hand-to-mouth" existence.
The Chembarampakkam tank storage went up by 48 mcft in 24 hours and for the moment, this detail was of only an academic interest as Metrowater does not have the authority to utilise the Chembarampakkam water totally.
As on date, the average cumulative rainfall of Poondi, Cholavaram and Red Hills this year was 67 cm including 15 cm in October.
Going by the 30-year-long rainfall average as of 2000, the annual normal rainfall is 125 cm, of which 73 cm occurs in three months - October to December.
However, last night's rain exposed the inadequacy and poor condition of storm water drain system in the city as many pockets experienced water stagnation. One of the worst affected areas was Vyasarpadi and Washermanpet, known for inundation during rainy days. But, what was unfortunate was that the civic authorities had not been able to find a solution to this problem though Vyasarpadi had been suffering it for years, a resident said.
Experimental measures for rainwater percolation in such areas through harvesting are also yet to be implemented. Even critical areas like subways handling road traffic have not been taken up for harvesting experiments, which could relieve flooding.
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