Amu Darya
The Amu Darya is a river in Asia, about 2,620 km long. It flows through Turkmenistan, Uzbekistan, Afghanistan and Tajikistan. It is one of the 20 longest rivers in Asia. In Turkmenistan, Uzbekistan, Afghanistan and Tajikistan, it is the longest river. Its drainage basin (309,000 km²) is the largest in Turkmenistan.