Question

What are the merits and demerits of canal irrigation in India?

Answer 1

Merits:

• These are effective means of irrigation.
  
• They generate income to government.
  
• They cover large area for irrigation.
  
• Canals are effective means to sustain drought.
  
• Carry sediment which enrich the fertility of soil.
  

Demerits:

• Cause problem of waterlogging and alkalinity in the peripheral areas.
  
• Irrigation through water often causes wastage of water.
  
• Causes disputes regarding sharing of water.
  
• Danger of spreading water borne disease in peripheral areas.