The Doab has an area of about 23,360 square miles (60,500 square km); it is approximately in length and in width.
The following districts form part of the Doab:Upper Doab: Dehradun, Haridwar, Rishikesh, Saharanpur, Muzaffarnagar, Meerut, Delhi, Ghaziabad, Gautam Buddha Nagar, BulandshaharCentral of Middle Doab: Mathura, Aligarh, Etah, Agra, Mainpuri, Etawah, Farrukhabad, Kanpur, Lower Doab: Fatehpur, Kaushambi and Allahabad.
Each of the tracts of land lying between the confluent rivers of the Punjab region of Pakistan and India (the Indus basin) has a distinct name, said to have been coined by Raja Todar Mal, a minister of the Mughal emperor Akbar. The names (except for 'Sindh Sagar') are a combination of the first letters, in the Persian alphabet, of the names of the rivers that bound the Doab. For example, Jech = 'Je'(Jhelum) + 'Ch'(Chenab). The names are (from west to east):
In addition, the tract of land lying between the Sutlej and the Yamuna river is sometimes called the Delhi doab, although, strictly speaking, it is not a doab, since its two bounding rivers, the Yamuna and Sutlej, are not confluent.