Question

Why maximum irrigation is performed in northern India by canals and wells and in the southern india by tanks

Answer 1

Well irrigation and Canal irrigation is confined mainly to the northern plains because of its of nature of the soil where canal and Wells can easily be dug and yield of crops from the land after irrigation is considerable high.

Moreover the terrain of Deccan Plateau is very uneven with many natural depressions tanks can be easily built.

The Hard Rocks in the southern area do not suck up water so Wells cannot be made there but the tanks can be easily made by means of making dams in hollow spaces in which rainwater is stored in large quantities for distributing regular supply of water through the channels to the arable lands in the dry season