Sufi Chay (Persian: صوفی‌چای) is a river in north-west Iran, at 37° 19' 45" N, 46° 4' 36" E. The river rises at Mount Sahand^[1] in the mountains to the east of Lake Urmia, and flows south past Alavian and Senshon till it reaches Maragheh city where it turns east and enters the endorheic Lake Urmia in a large delta at Bonab.^[2]

v t e Rivers of Iran
Lake Urmia basin	Aji Chay Quri Chay Alamlou River Barandouz River Gadar River Ghaie River Leylan River Mahabad River Nazlou River Rozeh River Shahar River Simineh River Zarrineh River Saqqez River Zola River
Persian Gulf basin	Arvand Rud Karun River Marun River Dez River Koohrang Jarahi River Bahmanshir Mehran River Mond River
Oman sea basin	Bahu Kalat River
Caspian basin	Aras Sefid-Rud Ghezel Ozan Shahrood (River) Alamut River Zarjoob Chalus River Sardab River Haraz River Lar River Atrek River Kojoor River Do Hezar River Atrek River Qarasu River Gorganrud River Astarachay
Gavkhouni basin	Zayanderud
Namak Lake basin	Qom (River) Abhar River Jajrud Karaj River Jajrud
Hamun-e Jaz Murian basin	Halil River Bampur River
Other	Shesh Taraz