The Safid River is a river in northern Afghanistan

Afghanistan

Afghanistan , officially the Islamic Republic of Afghanistan, is a landlocked country located in the centre of Asia, forming South Asia, Central Asia and the Middle East. With a population of about 29 million, it has an area of , making it the 42nd most populous and 41st largest nation in the world...

 originating in southwestern Sar-e Pol Province

Sar-e Pol Province

Sar-e Pol, also spelled Sari Pul , is one of the thirty-four provinces of Afghanistan. It is in the north of the country. Sar-e-Pul Province is situated between the central highlands and the northern Turkmen plains. Sar-e-Pul borders Ghor and Baniyan provinces to the south, Faryab, Jawzjan and...

. It flows north and is joined by a major tributary from the east just south of the provincial capital, Sar-e Pol

Sar-e Pol

Sar-e Pol may refer to many places in Afghanistan:* Sar-e Pol Province in Afghanistan* Sar-e Pol District in Sar-e Pol Province* Sar-e Pol city in Sar-e Pol District*Sar-e Pol, Jowzjan*Sar-e Pol...

. It continues north past the town of Sar-e Pol and into Jowzjan Province

Jowzjan Province

Jowzjān or Jōzjān or Jawzjan is one of the thirty-four provinces of Afghanistan. It is in the north of the country. Its capital is Sheberghan.- Demographics :...

. It flows past Sheberghan

Sheberghan

Sheberghān or Shaburghān , also spelled Shebirghan and Shibarghan, is the capital city of the Jowzjan Province in northern Afghanistan.-Location:...

 into the edge of the Karakum Desert

Karakum Desert

The Karakum Desert, also spelled Kara-Kum and Gara Gum is a desert in Central Asia. It occupies about 70 percent, or 350,000 km², of the area of Turkmenistan....

 where it dries up. In prehistoric times it flowed into the Amu Darya

Amu Darya

The Amu Darya , also called Oxus and Amu River, is a major river in Central Asia. It is formed by the junction of the Vakhsh and Panj rivers...

.

There are irrigation canals that spread the water out around Sheberghan.