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The Northern plains are an important physiological feature of India. 
They have the following features-

1. It has an area of about 70000 The plains are nearly 2400 km long and 240 - 320 km in breadth.

2.  Composed of Alluvial soil and a  highly agriculturally productive area.
  Main crops grown here are mostly paddy and wheat.

3. This plain is crossed with three  major rivers - the Ganges, the Indus and the Brahmaputra.

4. It's divided into four parts due to relief differences - Bhabar , Terai , Bhangar and Khadar. 

5. Due to favorable climatic conditions and other socio- economic factors , the Northern Plain is  a  very densely populated.
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