Question

the Canal irrigation is practised only in plain areas why ?​

Answer 1

Answer:

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Explanation:

Canal irrigation is also an important source of irriga­tion accounting for above 30 per cent of the net irrigated area. Canal irrigation is possible in areas which are exten­sive plains and are drained by well distributed perennial rivers, such as the northern plains, coastal plains, deltas (where even the distributaries can act as canals), and the broad valleys of the peninsula.

Inundation canals are those which are taken out without constructing dams or 'bunds' and get water only when the main stream is flooded-thus, they have limited validity. Now, the efforts are on to convert them to perennial systems. The post-independence period saw the construction of canals as a part of the multi-purpose projects, e.g., Bhakra-Nangal (Punjab), Damodar Valley Gharkhand and West Bengal) and the Nagarjunasagar (Karnataka) projects.

The initial costs of constructing canals is high, but once constructed, the operational cost is minimum, which makes them a cheap source of irrigation in the long run. Canal irrigation is important in Punjab, Haryana, western Uttar Pradesh, Assam, West Bengal, coastal Orissa and coastal Andhra Pradesh. The canals are almost absent in hilly states like Kerala and the North-East.

Answer 2

Canal irrigation is an essential irrigation system and is more popular in the Northern Plains because the seasonal flows, through building dams around rivers and the water is collected in reservoirs.

Explanation:

• The initial costs of creating canals are high, but once installed, the operating costs are low, rendering them a reliable source of irrigation over the long term. In Punjab, western Uttar Pradesh, Haryana, Assam, West Bengal, coastal Andhra Pradesh, and coastal Orissa irrigation of the canal is important.
• Across hilly areas like Kerala and the North-East, the canals are almost gone. Canal irrigation is also a major source of irrigation covering over 30 percentage of the total irrigated area.

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