Marghab River

The Marghab River (Dari/Pashto: مرغاب, Murghāb, Balochi: مرگاپ), anciently the Margiana (Ancient Greek: Μαργιανή, Margianḗ), is an 850-kilometre (530 mi) long river in Central Asia. It rises in the Paropamisus Mountains (Selseleh-ye Safīd Kūh) in Ghor Province, flows through the Marghab District in central Afghanistan, then runs northwest towards the Bala Murghab. Reaching the oasis of Mary in the Karakum Desert of Turkmenistan, the Marghab debouches into the Karakum Canal, a diversion of water from the Amu Darya. The catchment area of the Marghab is estimated at 46,880 square kilometres (18,100 mi). The Marghab River originates in the Ghor Province of central Afghanistan, on a plateau among the chain of mountains of Paropamisus, Gharjistan and Band-i Turkestan. In its higher course, the river runs from east to west, towards Mukhamedkhan, for about 300 kilometres (190 mi) in a narrow, steep valley measuring less than one kilometer in width, with narrow gorges in some places. Between Darband-i Kilrekht and Mukhammedkhan, the Marghab crosses the western part of Band-i Turkestan, and then runs toward the northwest in a deep canyon. At Mukhammedkhan, it crosses the gorges of Jaokar. After this, the valley widens somewhat, gradually reaching a width of 2 kilometres (1.2 mi) in Turkmenistan. Beyond Mukhamedkhan, a small portion of the water of the Marghab is used for irrigation; approximately 10,000 hectares (25,000 acres) are irrigated from the Marghab in Afghanistan.