The same covers an area of 8,300 sq. km. and comprises of the rivers that flow into the Hamoon Jazmoorian Lake.
The most important of which is the Halil Rood River, with main tributaries like the Zardasht from the Gufar, Baft from Lalezar, Rabar from Al Fath, Teel from Hezar Kooh and Esfandaqeh from the heights of Esfandaqeh flow into this basin, after irrigating the territories of Jiroft and Kahnooj, enter the Hamoon Jazmoorian. Dam lake of Jiroft is one of the recreational areas here.