The Gadar River rises in the

Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

ian

Zagros Mountains The Zagros Mountains ( ar, جبال زاغروس, translit=Jibal Zaghrus; fa, کوه‌های زاگرس, Kuh hā-ye Zāgros; ku, چیاکانی زاگرۆس, translit=Çiyakani Zagros; Turkish: ''Zagros Dağları''; Luri: ''Kuh hā-ye Zāgro ...

near the point where the borders of Iran,

Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...

and

Iraq Iraq,; ku, عێراق, translit=Êraq officially the Republic of Iraq, '; ku, کۆماری عێراق, translit=Komarî Êraq is a country in Western Asia. It is bordered by Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq ...

meet. From its source, the river first flows towards the southeast and then changes course due east through the Ushnu-

Solduz Naqadeh (; ; ), formerly known as Sulduz, is the main town of Naqadeh County, West Azerbaijan Province in Iran. At the 2006 census, its population was 72,975, in 18,320 families. Name Naqadeh is the current name of the town (and county). The fo ...

valley. After leaving the valley, the river turns north and flows into marshes bordering

Lake Urmia Lake Urmia; az, اۇرمۇ گؤلۆ, script=Arab, italic=no, Urmu gölü; ku, گۆلائوو رمیەیێ, Gola Ûrmiyeyê; hy, Ուրմիա լիճ, Urmia lich; arc, ܝܡܬܐ ܕܐܘܪܡܝܐ is an endorheic salt lake in Iran. The lake is ...

. The length of the river is approximately , its

drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, t ...

is variously estimated as and and its discharge is per second. The Ushnu-Solduz valley has been occupied since many millennia, as testified by the excavations at sites like Hasanlu Tepe and

Hajji Firuz Tepe Hajji Firuz Tepe is an archaeological site located in West Azarbaijan Province in north-western Iran and lies in the north-western part of the Zagros Mountains. The site was excavated between 1958 and 1968 by archaeologists from the University o ...

Notes

References

* * Rivers of West Azerbaijan Province Landforms of West Azerbaijan Province Iranian Kurdistan {{Iran-river-stub