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Updated: May 4, 2013 12:17 IST

Groundwater level falls in Coimbatore district

Karthik Madhavan
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Result of failure of monsoons in 2012

Groundwater level in the district has gone down – drastically in a few places - thanks to the failure of monsoons in 2012. Recent reports with the Tamil Nadu Water Supply and Drainage Board suggests that the average drop in water level is five metres in the district.

The Board monitors water supply twice a year – before and after monsoon in May and January – using the 38 observation wells it has dug across the district, covering all the 12 panchayat unions.

The Board also studies the water level, which it says is potable in many rural areas.

The worst-affected areas in the district are the northern and eastern pockets.

In Sulur and Annur blocks, water is to be found only between 30 and 40 metres below ground level (BGL). In Karamadai, it is 15 – 20 m BGL.

Southern areas in the district fare better because the groundwater gets recharged because of the flow of River Aliyar.

The Board says that the January 2013 study, conducted after the 2012 South West and North East monsoons, has shown that the water level has considerably gone down. In 2012, the Board says the rainfall deficit was 39 per cent. The average rainfall for the district is 679.77 mm.

For example, water level in Irumborai Panchayat in Karamadai Union in 2013 January was 14.20 m BGL. In 2012 January it was 9.50 m BGL and in May it was 11.60 BGL.

Likewise, in Annur, the water level had dropped six m – from 22 m BGL in 2012 January to 28.10 m in 2013 January.

As part of its efforts to improve the groundwater level, the Board says it has built recharge structures – 202 check dams, taken up improvements of three oorani and also initiated efforts to recharge defunct bore wells.

To arrest and reverse the fall in groundwater level more such recharge structures are necessary, says K. Mylswami of Siruthuli, an NGO involved in water conservation.

Prior to the onset of monsoon this year, the Board should dig as many bore wells as possible to recharge groundwater and aquifers. A recommendation from the Central Ground Water Board is also along these lines.

He says that rural areas need more bore wells because the people there are dependent on bore wells for all their needs.

They do not have drinking water supply scheme like the Coimbatore city and the quantity of water they receive is lower compared to what their counterparts in the city receive.

The borewells and groundwater recharge structures that the Siruthuli has put in place have yielded rich dividends, he adds.

More In: Coimbatore

Rain Water Harvesting is not done properly.. The municipality /
corporations are corrupt...... With the rain Coimbatore is getting and
with lots of natural water bodies in and around the city, we should be
having a better ground-water level...

from:  Shaju
Posted on: May 5, 2013 at 10:17 IST

Soon earth will turn into a Man-Made Mars !!

from:  sourabh
Posted on: May 4, 2013 at 20:27 IST
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