In the Quaternary period the changing landform features in the Himalayan mountainous region and piedmont zone is the reflection of interdependent responses of neotectonic effects, climate change and progressive shifts of the major rivers. The fluvial regimes and the piedmont facies also fit in a dynamic equilibrium of coalescing and migrating ?fan- in- fan? morphology with unconsolidated materials in response to oscillation of climate from cold to warm during different glacial and interglacial stages of Quaternary period as well as in recent time. Thus, the shifting of the river courses and subsequent changes in the morphological features have taken place in time and space which caused force shifting of the human settlements in recent past also.In the present-day scenario, to reduce the adverse effects of flood/ waterlogging caused by the change in river courses, the major eastern Himalayan rivers viz. Gandak, Kosi, Tista etc. are with dam and barrages. However, the canals (both main and distributaries) are passing through the alluvial fan zone where both lateral and vertical seepages are very common as observed in satellite images and ?in-situ? survey. For the reason, the canals are not fulfilling the objectives of the irrigation facilities in the command areas rather playing facilitator role towards increasing waterlogged areas along the canals.On the issue, a detailed discussion is made in this paper about the hydro-geological/ geomorphological conditions of the terrain units and anthropogenic factors for upgradation of irrigation facilities and other societal aspects through linking of the Brahmaputra ? Ganga Rivers from Bangladesh to Farakka Barrage for the benefits of the two countries in the context of the regional co-operation on water resources of five south-east Asian countries (viz. India, Bangladesh, Nepal, Bhutan and China).
Changing Courses of Eastern Himalayan Rivers: Flood Hazard and Irrigation Aspects and Linking of Brahmaputra ? Ganga Rivers
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In the Quaternary period the changing landform features in the Himalayan mountainous region and piedmont zone is the reflection of interdependent responses of neotectonic effects, climate change and progressive shifts of the major rivers. The fluvial regimes and the piedmont facies also fit in a dynamic equilibrium of coalescing and migrating ?fan- in- fan? morphology with unconsolidated materials in response to oscillation of climate from cold to warm during different glacial and interglacial stages of Quaternary period as well as in recent time. Thus, the shifting of the river courses and subsequent changes in the morphological features have taken place in time and space which caused force shifting of the human settlements in recent past also.In the present-day scenario, to reduce the adverse effects of flood/ waterlogging caused by the change in river courses, the major eastern Himalayan rivers viz. Gandak, Kosi, Tista etc. are with dam and barrages. However, the canals (both main and distributaries) are passing through the alluvial fan zone where both lateral and vertical seepages are very common as observed in satellite images and ?in-situ? survey. For the reason, the canals are not fulfilling the objectives of the irrigation facilities in the command areas rather playing facilitator role towards increasing waterlogged areas along the canals.On the issue, a detailed discussion is made in this paper about the hydro-geological/ geomorphological conditions of the terrain units and anthropogenic factors for upgradation of irrigation facilities and other societal aspects through linking of the Brahmaputra ? Ganga Rivers from Bangladesh to Farakka Barrage for the benefits of the two countries in the context of the regional co-operation on water resources of five south-east Asian countries (viz. India, Bangladesh, Nepal, Bhutan and China).
| Publication Mode |
Online |
|---|---|
| Publication Author |
Parthasarathi Chakrabarti |
| Publication Language |
English |
| Publication Type |
Conference Paper |
| Publication Year |
2021 |
| DOI |
10.17491/cgsi/2021/165854 |
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
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C-168762
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
SKU:
C-168755
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
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C-168766
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
SKU:
C-168770
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
SKU:
C-168750
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Conference Papers, SP-12: Water Resources of Western and Central Regions of India: Status, Issues and Strategies
SKU:
C-168769
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