INTERLINKING THE RIVERS
Problems in full utilization of water resources:
A large portion of water resources is lost through run-off (floods) and evaporation losses.
Over-irrigation leads to the deterioration of soils. Results in the salinity and alkalinity of
the water.
Pollution of water by industries. (industries uses less water than agriculture)
Flooding causes damage to life and property in one-eight area of the country, which has
been declared as flood-prone.
How to increase water availability?
Water storage above ground through dams and diversion through weirs are conventional
means
Artificial recharge and rainwater harvesting
Interlinking the rivers
Need for interlinking the rivers:
Although India has vast surface water resources, the same are very unevenly distributed
over time and space. While some basins have vast catchment and carry enormous quantity of
water, others are small and have comparatively small quantity of water. Most of the Himalayan
rivers are large and originate in the snow covered high altitude areas of the Himalayan ranges.
As such they carry sufficient water throughout the year and are called perennial rivers. Some
rivers carry water only in rainy season and are called peninsular rivers. They carry no or very
little water. Most of the water from the Himalayan river system (such as Indus, Ganga and
Brahmaputra river system) is wasted in the form of flood. In contrast most of the rivers have
insufficient flow of water during the dry season and acute scarcity of water is felt in almost all
parts of country. Hence interlinking river through inter-basin linkages or through national grid is
proposed.
The concept of river interlinking is not new because, during the tenure of Mughal the
Yamuna and Agra Canal was constructed. Through these canals the water from Himalaya is
made available to Punjab, Rajasthan and Uttar Pradesh.
History of interlinking the rivers:
During the British raj, an Engineer Sir Arthur Cotton had sought to link the Ganga and the Cauvery to improve connectivity for navigation purposes but due to the increased railway connectivity among the areas, the idea w as shelved.
I n 1982, the National Water Development Agency (NWDA ) was formed as an autonomous body entrusted with the task to carry out the water balance and feasibility studies of the river linking program.
I n Feb 2012, Supreme Court, gave its go-ahead to the interlinking of rivers and asked the government to ensure that the project is implemented expeditiously.
Aim of interlinking the rivers:
To reduce the disparities in different river basins by transferring water form surplus
eastern region to deficit western region of the country through the creation of link canals,
reservoirs and large dams.
Advantage:
Irrigation:
Lands which are not irrigated and unusable for agriculture becomes fertile.
Strengthen food security and enhance food production.
Flood prevention
Generation of electricity (hydro power)
Navigation:
Newly created network of canals opens up new routes and ways and routes of
water navigation, which is generally more efficient and cheaper compared to road
transport.
In turn helps our economy.
Issues in interlinking the rivers:
Environmental impact:
The project envisages construction of over 80 dams. The environmental impact
(which is likely to be huge) is totally unknown. Construction of dams is likely to
submerge large tracts of forest land and displace large number of people. Many
other environmental problems like soil erosion are related to dams.
The interlinking project is likely to change the flow in the downstream parts of the
river, undermine the rich fishing economy in the plains and estuaries and damage
mangrove forests which are vital for the stability of the coastal ecosystem.
Evidence from the former Soviet Union reveals how diversion of two rivers for
irrigation led to the death of the Aral Sea with diverse impact on the aquatic life
and fishing communities.
Meteorologists have speculated that the sudden greening of a desert area like
Rajasthan through diversification of river water could have unexpected cooling
and heating effects. This could impact the traditional course of the north-east
monsoon, which comes up from the Bay of Bengal and provides winter rain to
eastern India
Social Impact:
Large amount of land needs to be acquired for construction of canals.
Our record in providing compensation and rehabilitation to people affected by
large public projects is extremely poor.
No assessment of the cost of rehabilitation of people affected by such projects is
known.
Alternative to interlinking the rivers:
Desalination of water is becoming inexpensive and practical. Cost of treating sea water is
estimated to be $1/m3 for seawater and $0.5/m3 for seawater. These costs are estimated
to fall further with development of better technology. Many countries (notably Saudi
Arabia) already depend on this solution.
Large scale utilization of ground water in deltas
Community participation:
Approaches of reducing water consumption by the affluent in the cities and
reducing the wastage of water by the farmers in their field can be attempted.
We are currently wasting huge amount of water through poor efficiency in
irrigation. Better water management can bring down the demand for water.
The Ganga-Cauvery Link Canal:
Proposed by Dr. K. L. Rao
Aim: to reduce the impact of floods in Ganga basin and supply water to central and
eastern parts of the country which suffer from chronic problem of water supply.
Passes through the basins of the Son, the Narmada, the Tapi, the Godavari, the Krishna,
the Pennar rivers and joins Cauvery.
Length of the canal: 2640km
Sl No. From To Name of Reservoir for storage
1. Ganga Son Rihand Reservoir
2. Son Narmada Bargi Reservoir
3 Narmada Wainganga
4 Wainganga Godavari Yellampalli Reservoir
6 Godavari Krishna Srisailam Reservoir
7 Krishna Penna Somasila Reservoir
8 Penna Cauvery Mettur Reservoir
Advantage:
Helps to reduce floods in the North India and water shortage in the South India.
Helps to fight against desertification particularly in Southern India
Issues:
Transfer of water form river Son to river Narmada because (river son is about 40m above
the sea level where as river Narmada is about 450m above the sea level)
Technology
Power
Cost (techno economic feasibility)
Availability of water
At present about 70,000 cumecs of surplus water is available at Farakka barriage.
In future Bangladesh may file an objection that this project is violating the Teesta
water agreement, 1972.
Source of river Ganga and its tributaries lies in Tibetan region and it run through Nepal.
In future Nepal may construct dams across these rivers.
Cauvery water dispute between Karnataka, Tamil Nadu and Pondicherry.
First river linking project of the country:
A temple of rivers Narmada and Kshipra (also called as Shipra) will be built at
originating point of Kshipra river known as Kshipra Tekri at village Ujjaini, about 22 km from
Indore. This place will be developed as a pilgrimage centre and will be known as Sangam Sthal
(confluence place), Narmada-Kshipra link project in Ujjain. This project will be beneficial to the
Madhya Pradesh, especially Malwa region.
Note:
1. Narmada:
Also called the Rewa
Also known as "Life Line of Madhya Pradesh
The river rises is a small bowl, known as the Narmada Kund, located at
Amarkantak on the Amarkantak hill in Anuppur District of Madhya Pradesh.
Flows from east to west (other east to west flowing river: Tapti and Mahi river)
Forms a rift valley while flowing between Satpura and Vindhya ranges (other
rivers which forms rift valley are: Damodar river in Chota Nagpur Plateau and
Tapti river)
It drains through the Gulf of Khambhat into Arabian Sea.
Rift valley: It is linear-shaped lowland between several highlands or mountain
ranges created by the action of a geologic rift or fault.
2. Kshipra:
Also known as Shipra.
The river rises in the Kakri Bardi hills Vindhya Range north of Dhar
It flows north across the Malwa Plateau to join the Chambal River
The Brahmaputra-Ganga link Canal:
Brahmaputra River carries a discharge of about 4000 cumecs even during lean period of
dry summer.
Reason: Its catchment area receives heavy annual rainfall.
Lower Ganga basin faces acute scarcity of water in summer season.
Aim: To divert the surplus water of Brahmaputra basin to the water scarcity areas of the
lower Ganga basin.
Requires the construction of
diversion barrage at Dhubri in Assam
A long feeder canal to link the water at Dhubri barrage with Farakka barrage.
When this project completes, it will be able to diver about 1500 cumecs of water from the
Brahmaputra at Dhubri to Ganga at Farakka.
Issue:
The feeder canal will pass through Bangladesh territory for which India will have
to reach an agreement with Bangladesh.
How this project will benefit if it sign the agreement?
Bangladesh can also use a part of water which is available in the feeder canal for
irrigation purpose or for augmenting the water flow in the Padma river.
Enhance the hinterland capability for inland navigation which in turn, reduces the
pressure on rail and road transport.
Ken-Betwa river link:
Aim: Diversion of surplus waters of Ken basin to water deficit Betwa basin.
This link canal will provide irrigation to water short areas of upper Betwa basin of
Madhya Pradesh by way of substitution and also to enroute areas of Madhya Pradesh &
Uttar Pradesh.
A dam is proposed on river Ken at Daudhan.
The Betwa command comprises of four projects namely Barari, Neemkheda, Richhan
and Kesari in the upper reaches of the Betwa basin.
It is the only project for which the detailed project report has been prepared.
Issues:
Approximately 8,650 ha of forestland in Madhya Pradesh is likely to be
submerged for the project; and part of that forestland is a part of the Panna
National Park.
1991 census data used for the implementation in 2005.
National Water Grid:
Aim: To link all the major rivers of India with the help of network of canals.
The Ministry of Water Resources (MOWR) and Central Water Commission (CWC)
formulated a National Perspective Plan (NPP) for Water Resources Development in 1980
envisaging inter-basin transfer of water from surplus basins to deficit basins/areas
National Water Development Agency (NWDA) was set up under the MOWR in 1982 for
carrying out various technical studies to establish the feasibility of the proposals of NPP.
Based on various studies conducted, NWDA has identified 30 links (16 under Peninsular
Component & 14 under Himalayan Component) for preparation of Feasibility Reports
(FRs).
Out of these, FRs of 14 links under Peninsular Component and 2 links (Indian Portion)
under Himalayan Component have already been completed.
Work of preparation of Detailed Project Report (DPR) of one of the link in Peninsular
Component Namely Ken-Betwa link has been taken up by NWDA.
Implementation depends on the consensus and cooperation of the concerned States and
agreements with the neighboring countries.
It comprises of two components
Himalayan Rivers Development Component
Peninsular Rivers Development Component
The two can be linked on the Mahanadi.
Advantage:
Helps to solve flood, drought, power and other water related problems of the
country.
Help in resolving inter-state water disputes.
Also ensures a minimum flow of water in water deficit Rivers.
Water which is flowing wastefully in rivers originating in the glaciers of the
Himalaya can be properly utilized.
Ensure food security and also enhance our food production capacity
Helps to solve the power crisis as we can generate more hydroelectricity.
Issues:
Involves huge cost
Construction of high dams and link canal by cutting across various basins requires
highly skilled engineering and labors.
Construction of dams involves destruction of forests, fertile soils and agricultural
land. Thus our ecological balance disturbs.
Submergence of National parks and Sanctuaries.
Rehabilitation and Resettlement (R&R) of those people who are living in those
areas.
Techno-Economic feasibility.
Himalayan Rivers Development Component:
Aim:
To divert the surplus water of Ganga and Brahmaputra basin to Mahanadi basin
then to Southern India.
To supplement the supplies of the Ganga and Yamuna and further transfer water
west to Rajasthan and Gujarat.
Requirements:
Construction of storage reservoirs on the principal tributaries of Ganga and
Brahmaputra
Interlinking canal systems to transfer surplus flow of the eastern tributaries of the
Ganga to the west
Linking Manas-Sankosh-Tista-Ganga to transfer Brahmaputra waters to Eastern
Ganga basin. This in turn, requires the construction of high dams on Manas and
Sankosh
Other proposed linkages are:
Kosi-Ghaghara
Gandak-Ganga
Ghaghara-Yamuna
Sarda-Yamuna
Linking the Brahmaputra and its tributaries with the Ganga
Linking the Ganga with the Mahanadi
Advantages:
Provides additional irrigation
Generation of hydropower
Helps to combat against desertification particularly in the eastern India
Control of floods in Ganga basin (particularly in Northern Bihar) and
Brahmaputra basin (particularly in Assam)
Provides necessary discharge for augmentation of flows at Farakka to flush
Kolkata port
Enhance hinterland for inland navigation which in turn, reduces the pressure on
rail and road transport.
Issues:
Agreement has to be signed with Nepal and Bhutan to share the water which are
having Tibetan region as their origin.
Nepal and Bhutan may construct dams across the rivers flowing throw them in the
future.
At present, china is planning to construct three dams across Brahmaputra in Tibet
region.
Peninsular Rivers Development Component:
Requirement:
Interlinking the Mahanadi-Godavari-Krishna-Cauvery
Diversion of a few west-flowing rivers towards the peninsular basin across the
Western Ghats.
Link from Mahanadi will require the construction of Manibhadra dam in Orissa
across Mahanadi.
The Godavari is joined by two major tributaries namely Indravati and Penganga
downstream of the major storage at Shri Ramsagar.
Surplus water from Godavari can be stored in the available dam site of
Inchampalli.
Advantage:
The Mahanadi-Godavari link would not require and lift of water
Irrigation potential of the agricultural land is going to increase
Dryland between Godavari and Krishna can be irrigated
Resolves the water sharing dispute mainly between Karnataka and Tamil Nadu
over the water of the Cauvery River.
M N Dastur Plan:
Propose Garland Canal System.
Aim: to link Himalayan river to those in the south.
Plan envisages construction of two canals
The first 4200 km: Himalayan Canal at the foot of Himalayan slopes running
from the Ravi in the West to the Brahmaputra and beyond in the east; and
The second 9300 km: Garland Canal covering the central and southern parts
Both the canals integrated with numerous lakes and interconnected with pipelines
at two points, Delhi and Patna.
Proposed link Garland Canal System:
Brahmaputra-Ganga (Dhubri-Farakka barrage) canal has to pass through
Bangladesh.
Chambal-Sind-Betwa-Ken (Madhya Pradesh and Uttar Pradesh) agreement is
already reached.
Mahi-Bans and Sabarmati link
Narmada-Tapi
Brahamani- Baitarani-Subarnarekha to Mahanadi
Mahanadi-Godavari
Diversion of all the Western coastal streams to Eastwards into the rain shadow
region of Western Ghats.
Issues:
The garland concept was rejected because water would have to be lifted from the
northern rivers to those higher up in the peninsula, which would consume an
enormous amount of energy.
Construction dams in the Himalayan belt to provide storage during the lean
months was problematic because of the dangers of earthquakes in this zone.
This was precisely one of the fears over the Tehri dam, which has now been built.
Environmentalists alleged that if it burst due to an earthquake the Himalayas are
a young mountain belt in geological terms.
Global Scenario:
China:
Scheme of transferring about 48KM3 of water from Yangtze to the Yellow to
improve water availability in dry plains of North china.
USA:
Project name: Colorado Big Thomson.
Diverts about 0.284km3 per annum of water from the upper reaches of the
western flowing Colorado river and sends eastwards into the south Platte River
Basin, which is a part of the Mississippi-Missouri basin.
Completed in 1957.
South Africa:
Lesotho Highlands Water Project.
Diverts 750m3 per annum of water from Lesotho to South Africa.
Completed in 2004.
National Water Policy:
Formulated by the Ministry of Water Resources of the Government of India.
Aim: To govern the planning and development of water resources and their optimum
utilization.
The first National Water Policy was adopted in September, 1987. It was reviewed and
updated in 2002 and later in 2012.
Salient Features:
The government may withdraw from its role as a service provider in the water
sector.
Communities and private sector should be encouraged to play the role of service
provider.
Government should abolish all forms of water subsidies to the agricultural and
domestic sectors.
Subsidies and incentives should be provided to private industry for recycling and
reusing treated effluents.
People displaced by large water projects should be made partners and given a
share in the benefits comparable to the project-benefitted families.
The cost of rehabilitation and compensation to the project affected families be
partly borne by the project-benefited families through adequate pricing of water.
Other major features:
To curtail subsidy to agricultural electricity users
Setting up of Water Regulatory Authority
To keep aside a portion of the river flow to meet the ecological needs and to
ensure that the low and high flow releases correspond in time closely to the
natural flow regime.
To give statutory powers to Water Users Associations to maintain the distribution
system
To remove the large disparity between stipulations for water supply in urban areas
and in rural areas
To support a National Water Framework Law
To ensure access to a minimum quantity of portable water for essential health and
hygiene to all citizens, available within easy reach of the household
Critics:
Paradigm shift in approach from service provider of water to facilitator of service.
Policy does not deter use among those who can afford to pay for water.
PPP mode may not ensure equity.
Policy does not follow polluter pay principle; rather it gives incentives for effluent
treatment.
National Water Framework Law:
Proposed by a committee headed by Dr. Y. K. Alagh.
The framework law was intended to be justiciable in the sense that the laws passed and
the executive actions taken by the Central and State governments and the devolved
functions exercised by the Panchayati Raj Institutions (PRIs) would have to conform to
the general principles and priorities laid down in the framework law (on the basis of a
national consensus), and that deviations can be challenged in a court of law.
The proposed National Water Framework Law is like that of Directive principle of State
Policy, but different is the sense that it would be justiciable.
Why is a national law on water necessary?
under the Indian constitution water is primarily a State subject, but it is an
increasingly important national concern in the following context:
1. The judicial recognition of the right to water as a part of the fundamental
right to life
2. The general perception of an imminent water crisis, and the dire and
urgent need to conserve this scarce and precious resource
3. Rising inter-state conflicts in regard to the sharing of river water
4. The pollution of rivers and other water sources, turning rivers into sewers
or poison and contaminating aquifers
5. The long-term environmental, ecological and social implications of
projects to augment the availability of water for human use
6. The equity implications of the distribution, use and control of water
7. The international dimensions of some of Indias river and
8. The emerging concerns about the impact of climate change on water and
the need for appropriate responses at local, regional, national and
international levels
Several states are enacting laws on water and related issues.
Different state governments tend to adopt different legal positions on their rights
over the waters of a river basin that straddles more than one State. Such legal
divergences tend to render the resolution of inter-State river-water conflicts
extremely difficult.
Water is one of the most basic requirements for life. If national laws are
considered necessary on subjects such as the environment, forests, wildlife,
biological diversity etc, a national law on water is even more necessary.
Finally, the idea of a national water law in not something unusual or
unprecedented. Many countries in the world have national water laws or codes,
and some of them (for instance, the South African National Water Act of 1998)
are widely regarded as very enlightened. The considerations behind those national
codes or laws are relevant to India as well, although the form of a water law for
India will clearly have to be guided by the nature of the Indian Constitution and
the specific needs and circumstances of this country.
List of references:
http://nwda.gov.in/writereaddata/linkimages/0723832353.PDF
http://articles.timesofindia.indiatimes.com/2003-07-15/mumbai/27199024_1_river-
linking-interlinking-project-national-water-development-agency
http://articles.timesofindia.indiatimes.com/2012-11-30/indore/35484278_1_link-project-
link-rivers-river-linkage
http://articles.timesofindia.indiatimes.com/2004-07-26/india/27157651_1_river-linking-
aerial-survey-flood
http://articles.timesofindia.indiatimes.com/2012-12-15/mangalore/35835583_1_water-
crisis-ground-water-water-resources
http://pib.nic.in/newsite/erelease.aspx?relid=38214
http://www.hindu.com/2003/02/03/stories/2003020302721300.htm
http://www.infochangeindia.org/environment/eco-logic/linking-rivers-tragedy-of-
errors.html
http://mowr.gov.in/writereaddata/linkimages/NWP2012Eng6495132651.pdf
http://www.thehindu.com/opinion/lead/why-a-national-water-framework-
law/article4280263.ece
http://nwda.gov.in/index2.asp?slid=106&sublinkid=6&langid=1
Kurukshetra magazine of January 2013 issue. (page no. 25 and 26)
Self prepared notes by taking points from various sources.
Name : Sushant Kumar Sinha