Helmand River

"Hirmand" redirects here. For the administrative subdivision of Iran, see Hirmand County.

"Helmund" redirects here. For the province in Afghanistan, see Helmand Province.

Helmand
Helmand and Boghra Canal beyond it
Map of the Helmand drainage basin
Location
Countries	Afghanistan and Iran
Physical characteristics
Source
• location	Hindu Kush mountains
Mouth
• location	Hamun Lake
Length	1,150 km (710 mi)
Basin size	Sistan Basin
Basin features
Tributaries
• left	Arghandab River
• right	Khash River Chagay River

The Helmand river, also historically known as the Etymandros, is the longest river in Afghanistan and the primary watershed for the endorheic Sistan Basin. It originates in the Sanglakh Range of the Hindu Kush mountains in the northeastern part of Maidan Wardak Province, where it is separated from the watershed of the Kabul River by the Unai Pass. The Helmand feeds into the Hamun Lake on the border of Afghanistan and Iran.