The Tigris River City on the is Mosul, a city in Iraq with a population of over 1.8 million people. It is located in the Nineveh Governorate in the northwestern part of the country and is the capital of the Ninawa Governorate. Mosul is an important cultural and economic center in Iraq and is home to many historical sites. It is also known for its strategic location on the Tigris River, which has been used as a trade route since ancient times.