(دریائے گمبیلا) river, also called the Tochi River
, is located in Bannu District
, North-West Frontier Province
It's source are the hills six miles south of the Sufed Koh, the source of the Kurram River, which it runs parallel too and finally joins.
The Gambila is an important river for the inhabitants of the Dawar valley, as it serves to irrigate a large area of land that it runs through. Particularly that belonging to the Bakkakhel Wazirs, and Miri and Barakzai Bannuchis.
Geography of Bannu and Environs - Kyber.org