Abstract

Climate change events cause erratic spatial and temporal variability in rainfall, temperature, humidity, etc. in long term, and are most severely affecting irrigation, domestic and industrial water supply. At the same time, water availability is also under pressure due to climate change and overexploitation of water resources. In a monsoonal climate that is already erratic and highly seasonal in nature, this increased variability due to climate change will further impact water availability and salt water intrusion. To overcome such problems, one of the most effective ways is interlinking of rivers. It is the interbasin water transfer from the water surplus rivers to water deficit rivers or regions. It will increase water supply, irrigation potential, mitigate floods, and droughts and reduce regional imbalance in the availability of water. Interlinking of rivers will reduce regional imbalances significantly and provide benefits by the way of additional irrigation potential, domestic and industrial water supply, hydropower generation, and transport facilities.

Highlights

  • The rainfall occurrence in India is mainly due to orographic effect, coupled with tropical depressions originating in the Arabian Sea and the Bay of Bengal

  • Criticizing the interlinking of rivers (ILR) mission of the Government of India, a leading geologist and environmental expert warned the move ought to disrupt rainfall pattern which could be a major problem in respect of climate change

  • The interlinking of rivers project is a major challenge and an opportunity to deal with the water related problems springing up drought, floods, climate change and so on

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Summary

Introduction

The rainfall occurrence in India is mainly due to orographic effect, coupled with tropical depressions originating in the Arabian Sea and the Bay of Bengal It accounts for about 85% of the total rainfall in the country. The Brahmaputra and Ganga rivers are the main Indian rivers in which almost 60 per cent of the Indian river drain One of the most effective means to enlarge the irrigation potential of river command areas is the Inter Basin Water Transfer (IBWT). It refers to the water transfer from water surplus rivers to the water deficit rivers or regions. If storage reservoirs can be built on these rivers and connected to other parts of the country, regional water imbalances could be reduced and many benefits by way of additional irrigation potential created, industrial and domestic water supply, hydropower generation, waterways facilities, etc. would be ensured

History behind interlinking of rivers
Earlier proposals
Existing proposals
Inter Basin water transfers in other countries
Indian National Water Policy (2012)
Issues: interlinking of Indian rivers
Interlinking of rivers to get new push during the year 1999–2004
River linking should adjust rainfall, hit monsoons
10. Successfully interlinking Indian rivers projects
10.2 Ken-Betwa link project
10.4 Par-Tapi-Narmada link project
10.5 Mahanadi-Godavari link project
10.7 Kosi Mechi link project
10.8 Burhi Gandak Noon Baya Ganga link project
Findings
11. Conclusion
Full Text
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