Indus Valley Plain
The plain is the western part of the Northern Plain in Pakistan formed by the Indus River and its tributaries. It is extensively farmed for wheat, rice sugarcane and Cotton. The high plain of the Indus Plain is also called Pothohar Plateau and is located near the foothills of Himalayas (e.g. Margalla Hills). The deserts in the Indus plain of Pakistan are Thal desert, Indus Valley desert, Thar Desert and Cholistan desert. The River Indus and its tributaries drain the Indus Plain throughout most of Punjab and the central part of Sindh.
The northern part is known as the Upper Indus Plain. By Panjnad the five main tributaries of the Indus (including the Beas which joins Sutlej in India) have all joined together.After the Sutlej joins the Chenab at Panjnad the river is itself called the Panjnad. The River Panjnad flows for a further 72 kilometres before joining the Indus near Mithankot.
The general slope of the plain towards the sea is gentle, with an average gradient (rate of change) of one metre to five kilometres. Below Mithankot in Sindh ,the Indus flows as a gigantic river till it meets the Arabian Sea. This part of the plain is known as the Lower Indus Plain.