The Korr River originates from the mountains of Seyed Mohammad and Palangeri in the Eqleed Township. After receiving several water springs, under the name of the Dezdkor River it finally enters Marvdasht via the Tang-e-Boraq region.
Another branch of the Korr River called the Margan River, after receiving a salty branch from Kharestan called Gavgodar, joins the Dezdkor River and passing through the Doroudzan Dam finally enters the Ramjerd plains.