The Diyala River (blue)
|location||Iran , Iraq|
|Drain over||Tigris → Shatt al-Arab → Persian Gulf|
|source||Zagros Mountains near Hamadan|
|muzzle||south of Baghdad in the Tigris
|Catchment area||32,600 km²|
|Reservoirs flowed through||Darbandichan Dam|
|Small towns||Darbandichan , Kalar|
Diyala near Darbandichan
The diyala ( Arabic نهر ديالى, DMG Nahr Diyālā ; Kurdish : Sîrwan , Persian سيروان, DMG Sīrvān ) is a tributary of the Tigris . The Iranian part of the river is called Sirvan while Diyala refers to the Iraqi section.
It has its source in Iran and flows through Iran and Iraq . Its total length is 443 km. The etymology of the name is unknown. In ancient times the river was known as Σίλλα (Silla) or Δέλαζ (Délaz) . The Iraqi province of Diyala is named after this river.
The source is located near the town of Hamadan in the Zagros Mountains . The Diyala forms 32 km of the Iranian-Iraqi border. The Diyala meets the Tigris south of Baghdad . Only the lower part of the river is navigable and forms an important route for trade between Iran and Iraq. There is a dam on the lower reaches of the Diyala.
The Nahrawan Canal , which began in the 3rd century, and the Diyala have partly swapped their course in the course of the Middle Ages . The underflow of the Nahrawan is presumably the former underflow of the Diyala, whereas the modern underflow of the Diyala probably follows a former tributary of the Nahrawan.
- Evaluation of water quality of Diyala river for irrigation purposes
- The Diyala in the Encyclopædia Britannica
- M. Morony: Al-Nahrawan . In: The Encyclopedia of Islam Vol. 7, New Edition 2005.