The 
Amu Darya (
Darya means "river"), previously known as the 
Oxus River, rising in the 
Pamirs[?], it flows mainly North-West through the 
Hindu Kush, 
Turkmenistan, and 
Uzbekistan to join the 
Aral Sea through a large delta. It forms part of the Northern border of 
Afghanistan and is important for 
irrigation. It is navigable for over 1450 km (800 miles). Length: 2400 km (1500 miles).
Use of water from the Amu Darya for irrigation has been a major contributing factor in the shrinking of the Aral Sea since the late 1950s.
see also Syr Darya
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