The Northern plains has been formed by the interplay of the three major river systems, namely– the Indus, the Ganga and the Brahmaputra along with their tributaries.
This plain is formed of alluvial soil. The deposition of alluvium in a vast basin lying at the foothills of the Himalaya over millions of years, formed this fertile plain.
The Northern Plain is mainly divided into three sections Punjab plains, Ganga Plains and Brahmaputra Plains
This plain is also divided divided into Bhabhar, Bhangar, Khadar and Terai regions.as per the relief features. Bhabhar is just beside the foothills of mountains having big boulders and stones where Terai has kankars and silt.
It spreads over an area of 7 lakh sq. km. The plain being about 2400 Km long and 240 to 320 Km broad, is a densely populated physio-graphic division.
With a rich soil cover combined with adequate water supply and favorable climate it is agriculturally a very productive part of India.