Doab is a word used in India and Pakistan and means a piece of land between two rivers, extending to where the two rivers meet. The most important of these is between the Ganges and Yamuna rivers.
Doab Media
In any doab, khadir land (green) lies next to a river, while bangar land (olive) has greater elevation and lies further from the river
View of a canal in the lower Bari Doab of the Punjab Doabs