Stable and steady
rise in level of groundwater recorded in rainwater harvesting project sites, says
CSE survey report
New Delhi, June 15, 2004: Rainwater harvesting can recharge the declining groundwater
levels in cities. Data from 11 rainwater harvesting projects spread across Delhi
shows an increase of 5 to 10 metres in the groundwater levels over two years.
At a meeting of the network of rainwater harvesters of Delhi, the Centre for
Science and Environment (CSE) presented the results of its survey from May 2002
to May 2004 on the level of groundwater in rainwater harvesting sites; these sites
have been designed by CSE.
This vindicates our point that groundwater is like a bank account. We have
to learn to live on the interest (recharge) and not on the capital of this reserve.
In other words, we have to remove only as much as we recharge.
Through their rainwater harvesting efforts they have been able to ensure that
for at least three months in a year (July to August) the rate of recharge of groundwater
is more than the rate of extraction. This process nurtures and replenishes the
resource, and stabilises the annual rate of depletion," explains Narain.
For more information:
R K Srinivasan (email@example.com)
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