In their greed for more water for the capital city, planners duck the question of wasteful expenditure of local water sources
DELHI already gets water from Beas Sutlej, Ganges and Yamuna rivers and
the Yamuna canal after exploiting all its
groundwater sources. Four large dams
are waiting to begin supplying water to
the city. There is even a proposal to
bring water for Delhi from dams to be
built in Nepal through a 370-km canal.
And yet, there is more asking for water
from rivers like Chambal, Chenab and
Ghaggar to relieve the urban thirst.
At a seminar-cum-workshop in held
in New Delhi on November 22-23,
organised by the Indian National Trust
for Art and Cultural Heritage (INTACH),
on "Water Resources of National
Capital Region: Problems and
Alternatives", bureaucrats were busy
projecting the water demand of the NCR
(National Capital Region) for AD 2001,
2011 and 2051. The Central Water
Commission (CWC) officials pushed for
the upstream dams Tehri (to supply 300
cusecs) on Bhagirathi river in the Ganga
basin, Kishau dam on Tons river (to
supply 689 cusecs) and Renuka dam on
Giri river (to supply 512 cusecs) - both
in the Yamuna basin - to satisfy the
NCR's demands Upto AD 2011.
The National Water Development
Agency (NWDA), however, regarded
these additional supplies as insufficient
after AD 2011, and proposed building
the Sarda-Yamuna link canal for an
annual additional water supply of 3,000
million cubic m (MCM) to Delhi. To justify the projects, "appropriate" population projections were made. So, while
the CWC projected that the NCR's population will go upto 550 lakh in AD 2050,
the NWDA projected that the population
will soar to 694 lakh in AD 2050.
The other argument was that 85 per
cent of the annual river water flow is
available in monsoon and only 15 per
cent in the non-monsoon months. Here
too, the role of local water harvesting in
changing this flow regime was glossed
over. While INTACH, and most notably,
the Central Ground Water Board
(CGWB) talked about augmentation
of local water resources through
harvesting, recharge and recycle
these were rather strangely term
simply as "short-term and medium-term" measures.
Omesh Saigal, member secretary of
the NCR Planning Board, said that there
are areas in Delhi which get 650 Ipcd
(litre per capita per day), and some
other areas get as little as 25 Ipcd, while
the average Delhi water supply is 220
Ipcd; but there was no recommendation
to control unjustifiable and wasteful
use. The Delhi Water Supply and
Sewerage Board officials were defensive
about demand side management
through proper water pricing, even after
agreeing that domestic water supply is
subsidised upto 80 per cent and sewage
collection and treatment is subsidised
upto 100 percent.
According to INTACH, there is potential to harvest rainwater upto 760 MCM,
to store excess flood discharge in the
rivers upto 500 MCM and to recycle
sewage upgraded through ecoparks
upto 700 MCM in the NCR. This totals
upto 1,960 MCM, compared to the projected total annual urban water demand
of 3,100 MCM in the NCR in AD 2001.
However, as Bharat Jairaj of
Worldwide Fund for Nature pointed
out, there has been little progress in this
direction since a June 1995 meeting
organised by INTACH. The Delhi government has been recommended to amend
building bylaws to make rooftop harvesting of rainwater compulsory in
Delhi, which is yet to be implemented,
said CRGWB chairman Arun Kumar. One
important sidelight - the channelisation of the Yamuna and river front
development on reclaimed lands on the
river banks that the Delhi government is
actively considering, was strongly
opposed by several participants.
Rajendra Singh of Tarun Bharat
Sangh (TBS) from Alwar, Rajasthan (part
of the NCR) pointed out the importance
of local water harvesting. The TBS, over
the last decade, has helped constructing
over 1,100 johads (traditional village
wells) in Alwar's villages. This has substantially arrested human migration to
cities, and helped rejuvenate two local
rivers, which used to dry up after monsoon just a few years ago.
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