Environmental Issues in Interlinking of Rivers in India
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See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/281080708 Environmental Issues in Interlinking of rivers in India Chapter · November 2005 CITATIONS READS 0 2,986 2 authors: Shiv Narayan Sharmistha Basu Directorate of Higher Education, Uttarakhand Deutsche Gesellschaft für Internationale Zusammenarbeit 6 PUBLICATIONS 23 CITATIONS 33 PUBLICATIONS 108 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: What works to prevent child marriage? Comparative study of two districts in Rajasthan View project FHI360 Projects View project All content following this page was uploaded by Sharmistha Basu on 04 September 2015. The user has requested enhancement of the downloaded file. Environmental Issues in Interlinking of Rivers in India 1 2 Shiv Narayan Sidh , Sharmishtha Basu 1Government Degree College, Gairsain Uttranchal, lndia-246428 Phone No.- 091-1363-268361 Email: shiv _:[email protected] 2Center for Studies in Regional Development Jawaharlal Nehru University New Delhi, Delhi, lndia-11 0067 ABSTRACT Rainfall over the Indian Sub-Continent is a gamble of monsoon. The spatial and temporal variations in the rainfall over India has led to detonation of water 'surplus' and water 'scarce' basins in the country. The proj.ect for interlinking the rivers in India aims at transferring water from water 'surplus' to the water scarce basin. The paper questions the prevailing reductionist concept of 'surplus' flow in some river basins irrespective of its diverse ecological needs and of its diversion to water scarce region. In the background of this debate, the paper touches on the fact that though the interlinking proposal has been made to reduce the water scarcity in the rain scarce areas of western and southern parts of In:dia, the choice of this gigantic project as the appropriate mechanism to accomplish that goal is questioned. Enquiring further into the logic behind the proposal that has formidable cost involved, the author is of opinion that the above observations, it identifies the need for a transparent techno-economic and ·environmental feasibility study and comparison with other options, before the interlinking projeCt is given final approval. With the diverse parameters viz; environmental refugees, water pollution, forest hacking, water logging and salination and sedimentation, paper arrives at following conclusion that, linking of rivers in India is based on supply side hydrology and encourages the inefficient uses of water in agricultural and in other uses, rather than opting for supply augmenting approach government should take care of demand management approach to increase the efficiency of water use. Emphasis should be made on watershed management, river basin planning, dry farming and other grass root initiatives by people's participation. Paper recommends a strong urge for Environment Impact Assessment and Social Impact Assessment studies at various stages of river basins across the nation. KEY WORDS Water S\lrplus and deficit basins, environmental refugees forest hacking, sedimentation, water logging and salination, water pollution and rain water harvesting. INTRODUCTION Water is a prime natural resource, a basic human need and a precious national asset. Planning development and management of water resources need to be governed by national perspective. As per the latest estimate 1993,out of the total precipitation, including snowfall, of around 4000 billion cubic meter (BCM) in the country (India), the availability from surface water and replenishable ground water is put at 1869 billion cubic meter from surface water and 432 billion cubic meter from ground water, can be put to beneficial use. The rapid growth in the demand offreshwater driven by growth in the global population and of the economies, has led to natural resources becoming scarce in many parts of the world. In the global picture, India is Environmental Issues in Interlinking of Rivers in India 237 idet1tified as a country where water scarcity is expected to grow considerably in the coming decades. Erratic and very unpredictable nature of monsoon and spatial and temporal variation in the rainfall over India has led to denotation of water surplus and water scarce river basins in the country. Further, drought conditions resulting from climatic variability causes considerable human suffering in many parts ofthe country, in the form of security of water for both satisfaction of domestic needs and for crop production. India has made big strides in the field of agriculture and industries during the last 5 decades. Due to these efforts, irrigated area in the country has grown from 21 million hectare in 1950 to about 90 million hectare and the food grain production increased from 50 million tones annually'in 1950 to around 200 million tones at present. Thus India has made considerable progress in developing and harnessing its water resources. The future development and management of water resources are going be increasingly difficult since water demands are expected to grow even faster due to improvement in the living standards of the people. The major constrain in the utilization of water is non-availability of storage facilities since river flows occur as flood flows during the short period of rainy season. With the·help of interlinking of rivers and interbasin water transfer projects, about 200-250 BCM can be added to the utilization according to the ·National Perspective Plan prepared by the Ministry of Water Resources. To meet the growing demand of the basic necessity like food, it will be necessary to increase the area under the irrigation to about 160 mha. Interbasin water transfer based on proven technology has a potential of additional irrigation of up to around 35 mha. Closing of the future demand-supply gap would require tremendous effort for developing the various options, amongst which the interbasin transfer appears very promising in national perspective plan at the cost of other cost effective alternatives. Unfortunately, contrary to the professional expectation, no technical details of the interlinking projects are available in the public domain. Except few lines drawn on the map of the country to indicate the rough location of the dams and the canals, nothing is available to the open professional world to verify the justifiability and efficacy of the official claims of benefits from the project, which are also not substantiated by any data. In this background of the complete non-availability of the technical details of the projects for interlinking of Indian rivers, it is not possible to take any clear position on the technical feasibility or otherwise of the claims made by NWDA. Yet, it is not easy to tum a blind eye to a proposal for such a large investment by the nation, which can also drastically alter the hydrographic picture of the country. As a result, in the present paper we have analyzed the governments National Perspective Plan in the light of environmental issues involved in the linking of rivers in India. The objective of paper is to examine the environmental issues that can take place if river linking is going to be implemented in the future. Looking at the experience of other countries (developed and developing), it is clear that the adverse impacts of the inter basin water in less in developed countries in comparison to the developing nations and adverse effects outnumbered benefits. This is not simply because of there advance technology but because of holistic approach towards the water resources management as along with the transfer of water they have also applied rainwater harvesting, drip and sprinkler irrigation methods and dry farming. While in countries like India much emphasis has been given on the supply augmentation. ISSUES IN INTERLINKING OF RIVERS This section deals especially with environmental issues involved in the inter-linking of rivers in India but other issues which include economic, social, political and geopolitical issues. Prominent environmental issues are as follows: Impact on the channel flow, ecological and hydrological usages of water, biodiversity, delta and flood cushions i.e. marshes, evaporation losses, issue of floods and drought, water logging and salination, forest hacking, environmental refugees, water pollution and issues of glacial retreat and its impact on stream flow. But it's very difficult to discuss all these aforementioned issues in this paper so our basic thrust will be on the issues like pollution and forest hacking and environmental refugees. In subsequent sections we will look at these one by one. 238 Environmental Resources and Sustainability Environmental Regugees I Internally Displaced People The term "environmental refugees" now is widely used within both environmental and the humanitarian aid/ disaster relief communities. There are refugees from floods, toxic spills and dump sites, desertification, hydroelectric projects, strip mining, radon and other radiation exposure, severe logging, soil erosion, agricultural land abuse, disease epidemics, defoliation, land mines, and other unwitting or international human activities. Dams cause permanent changes in the land use patterns and in the habitats of people those who are living in the area nearby the site of dams. This is also known as "displacement due to development". Dams and other developmental activities such as; construction of canals and roads, rails are examples of the human induced environmental disasters.