India, with its geographical area of 329 million hectares but
consisting of only 2.45 per cent of the earth’s land mass, supports a
population of about 1.2 billion as per the 2011 census. This is about 17
per cent of the global population. The renewable fresh water resources
of India at 1869 billion cubic metres (BCM) per year is only about 4 per
cent of the earth’s fresh water resources. Thus average Indian has
hardly one-sixth of land and one-fourth of water as compared to the
world average.
There are more inequities in the distribution of the water resources.
The total renewable water resources as of the year 2001 correspond to
about 1820 kilo litres (KL) of water per person per year. The population
of India is expected to stabilize at around 1500-1800 million by 2050
when the per capita availability of water would further come down to
nearly 60 per cent of the availability as in 2001. At that time, the per
capita availability in the Brahmaputra basin would still be around 9000
KL and in the Sabarmati basin below 200 KL. This is against the minimum
requirement of 1000 KL per person per year.
In view of the large variations in rainfall over space and time, the
country experiences frequent floods in some parts and severe droughts in
some others. Floods are a recurring feature particularly in the
Brahmaputra and Ganga rivers which carry 60 per cent of the water
resources of our country. Flood damages, which were of the order of Rs.
52 crore in 1953, went up to Rs. 5846 crore in 1998 with an annual
average of Rs. 1343 crore, affecting Assam, Bihar, West Bengal and Uttar
Pradesh besides causing untold human sufferings. On the other hand,
large areas in Rajasthan, Gujarat, Andhra Pradesh, Karnataka and Tamil
Nadu face recurring droughts.
River Interlinking Plan
In order to make better use of the country’s water resources, a grand
plan for interlinking rivers has been proposed that will make
inter-basin transfer of water possible.
The river interlinking project was the brainchild of the NDA
government and in October 2002, the then prime minister Atal Bihari
Vajpayee had formed a task force to get the project going against the
backdrop of the acute drought that year. A Centre-appointed task force
had in a report recommended division of the project into Peninsular and
Himalayan components.
The Peninsular component, involving the rivers in southern India,
envisaged developing a 'Southern Water Grid' with 16 linkages. This
component included diversion of the surplus waters of the Mahanadi and
Godavari to the Pennar, Krishna, Vaigai and Cauvery. The task force had
also mooted the diversion of west-flowing rivers of Kerala and Karnataka
to the east, the interlinking of small rivers that flow along the west
coast, south of Tapi and north of Mumbai and interlinking of the
southern tributaries of Yamuna.
The Himalayan component envisaged building storage reservoirs on the
Ganga and the Brahmaputra and their main tributaries both in India and
Nepal to conserve water during monsoon for irrigation and generation of
hydropower, besides checking floods.
30 links were identified as technically feasible and economically
viable on the basis of pre-feasibility studies. These are: Mahanadi
(Manibhadra – Godavari (Dowlaiswaram) link, Godavari (Inchampalli Low
Dam) – Krishna link, Godavari (Inchampalli) – Krishna (Nagarjunasagar)
link, Godavari (Polavaram) – Krishna (Vijayawada) link, Krishna
(Almatti) – Pennar link, Krishna (Srisailam)- Pennar link, Krishna
(Nagarjunasagar) – Pennar (Somasila) link, Pennar (Somasila) –Cauvery
(Grand Anicut) link, Cauvery (Kattalsi)- Vaigai-Gundar link, Ken-Belwa
link, Parbati-Kalisindh-Chambal link, Par-Tapti-Narmada link,
Damanganga-Pinjal link, Bedti-Varda link, Netravati-Hemavati link and
Pamba-Achankovil-Vaippar link.

Similarly, based on various water balance studies carried out for the
Himalayan component, the link proposals identified for preparation of
feasibility reports include the Manas-Sankosh-Tista-Ganga link,
Kosi-Ghagra link, Ghagra-Yamuna link, Sarda-Yamuna link,
Yamuna-Rajasthan link, Rajastan-Sabarmati link, Chunar-Sone Barrage
link, Sone Dam – Southern Tributaries of Ganga link,
Ganga-Damodar-Subernarekha link, Subernarekha-Mahanadi link, Kosi-Mechi
link, Farakka-Sunderbans link, and Jogigopa-Tista-Farakka link.

Conceptually, the project is the largest of its kind anywhere in the
world and will handle four times more water than the Three Gorges Dam in
China, five times all inter-basin water transfers completed in the US,
and more than six times the total transfer of the six inter-basin water
trans- fer projects already operational in India, namely Sarda-Sahayak,
Beas-Sutlej, the Madhopur-Beas link, the Kurnool-Cudappa ca- nal, the
Periyar Vegai link and the Telugu Ganga link.
Projected Benefits
Interlinking of rivers in India is expected to:
- Greatly reduce the regional imbalance in the availability of water
in different river basins. Surplus water which flows waste to the sea
would be fruitfully utilized. It is assessed that the inter-linking of
rivers will provide additional irrigation benefits to 35 million
hectares (Mha) -25 Mha from surface water and an additional 10 Mha from
increased ground water recharge- which will be over and above the
ultimate irrigation potential of 140 Mha envisaged from the conventional
irrigation projects.
- Construction of storage dams as proposed will considerably reduce
the severity of floods and the resultant damages. The flood peaks are
estimated to reduce by about 20 to 30 per cent in the Ganga and
Brahmaputra basins.
- The benefits of drought mitigation from inter-basin water transfers
will accrue to an area of about 25 lakh hectares in West Bengal, Bihar,
Jharkhand, Uttar Pradesh, Haryana, Rajasthan, Madhya Pradesh, Gujarat,
Andhra Pradesh, Karnataka and Tamil Nadu.
- Hydro power could also be generated on a massive scale by the
storage dams proposed under the interlinking of rivers. Hydro power
development has not kept pace with the potential and requirement in our
country. Against a potential of 84,000 MW, only about 22,000 MW capacity
for hydro power generation has been developed so far. For an efficient
working of electrical energy generating system, the mix of thermal to
hydro should be about 60:40. In our country it is about 75:25. The
storage dams proposed under interlinking of rivers will greatly improve
this situation. The total hydro power potential of the interlinking
systems is estimated to be 34,000 MW.
- A major part of the future requirements of big cities will have to
be met from long-distance inter-basin transfer of water. In the link
proposals under study, water supply to Mumbai and Delhi and many other
villages and habitations enroute the link canals are proposed to be
raised.
Arguments against the Project
- India has one of the lowest yield of cereals at 2134kg/hectare of
land. Hence expanding the irrigated land area is only one way of
increasing food production. Another way may be changes in farming
technology, the kind of crops grown (generally hybrid varieties use more
water than the indigenous varieties), better management of available
land and water.
- Indiscriminate irrigation over a period of time can also lead to
problems like water logging and rise in salinity in soil. Hence, besides
increasing the area under irrigation, implementation of mixed
agriculture and other such techniques of sustainable agriculture need to
be emphasized on.
- The 34,000 MW of hydro-power that is supposed to be generated as a
result of this project may be an overestimation as in most cases of
inter basin transfer, the requirement for pumping water across basins
exceeds that produced by tapping the potential energy of the water. The
pumping energy requirement is exceptionally high in this case as water
will be pumped across the entire length and breadth of the country.
- It is now generally acknowledged that big dams play only a modest
role in flood moderation. Flood cushion tends to get eaten into by the
more powerful demands of irrigation and power generation. The safety of
structures sometimes necessitates the release of waters causing
‘man-made’ floods downstream.
- Floods in moderation have certain benefits too. They are a free
source of minerals for the land, help in recharging groundwater
resources, help in conservation of biological diversity, give bumper
harvests, flush out silt from riverbeds to deltas, prevent intrusion of
saline water from the Sea and most importantly wash out saline deposits
on the top soil. So what has been termed as ‘surplus’ is not really
surplus. It is performing salient functions which are extremely
important for the preservation of ecological balance and is helpful for
the farmers.
- The project aims at mitigating drought by transferring water from
‘surplus’ to ‘deficit’ areas. The problem of drought is something that
we have a solution to already in the form of rainwater harvesting
structures. Also, even if the Linking of rivers project is implemented,
it will take water to only a fraction of the drought prone areas, large
parts of rain fed areas will remain unaffected.
- The cost of the project has been estimated at 112 billion USD at
2002 prices. However, it is estimated and accepted widely that the cost
may go up to 200 billion USD. Other sources cite that large projects
have had cost overruns in the region of 400-500%.
- Apart from estimated cost, recurring expenditure would be incurred
in maintenance of dams, de silting reservoirs, relining canals and
creating artificial drainage where needed. External costs like those
arising from harm done to the environment, ecology, wildlife and social
costs have not been taken into account.
- This project will involve coordination between not just States but
also countries. Dams will need to be built in Nepal and Bhutan, in order
to store the surplus water and later divert it to deficit regions.
Water that flows into Bangladesh will now be diverted from upstream by
India. Both Nepal and Bangladesh have not been taken into confidence
regarding the project as of now. This has the potential of future
conflict with these countries. This could also lead to a conflict
between India and China in the future as China controls the flow of
water in the Brahmaputra, Indus and Sutlej Rivers. China is considering a
proposal to build a dam on Yarlung Tsangpo (which becomes Brahma putra
in India) which will generate 40000 megawatts of energy (more than twice
generated by the Three Gorges dam). If this project goes through, the
entire equation of ‘surplus’ and ‘deficit’ in India will change. This
project and other similar grand projects being planned by China have the
capacity to completely throw India’s plans off the mark. Within India, a
number of inter- state conflicts over water, remain unresolved for
decades now (for example the Cauvery Tribunal). The Interlinking
project, which runs canal from almost every state of India, could become
a major source of contention between the Sates rather than uniting
them.
- From a humanitarian perspective, millions of people will be forcibly
displaced by this project. A sound rehabilitation and resettlement
program for these people needs to be put in place. It has been estimated
that 21-56 million people have been displaced by large dams over the
past 50 years in India, 40% of them tribal people. Less than 50% of
those displaced were rehabilitated.
- The approach of this project is a centralized one where the
government takes everything into its own hands and tries to come up with
one solution for all problems. While this project has its projected
benefits, there is no single benefit that cannot be achieved in an
alternative way.
Supreme Court Ruling
On February 27, the Supreme Court asked the government to implement
the ambitious interlinking of the rivers project in a time-bound manner
to tackle drought and flood in various parts of the country. The court
also appointed a high-powered committee for planning and implementation
of the project.
A bench comprising Chief Justice SH Kapadia, Justice AK Patnaik and
Justice Swatanter Kumar said the Centre and concerned state governments
should participate for the effective implementation of the project "in a
time bound manner".
It appointed a high-powered committee, comprising representatives of
various government departments, ministries, experts and social activists
to chart out and execute the project. The committee will comprise the
water resources minister, secretary, environment secretary and four
expert members appointed by the water resources ministry, finance
ministry, Planning Commission and environment ministry. Representatives
from state governments, two social activists and senior advocate Ranjit
Kumar, who has been assisting the court in the case, will also be
members of the committee.
The court had taken up the case on the basis of an 18 July 1994 Hindustan Times article.
Later, based on several discussions over the need for improved and
better access to water, amicus curiae (friend of the court) Kumar filed
an application to examine the possibility of river interlinking.
In 2002, Kumar made an application to the court in the Yamuna case
based on the speech of then president A.P.J. Abdul Kalam on how India
could possibly better manage its water re- sources.
The court converted Kumar's application into a full-scale petition and heard it out separately.