The Jajrud (Jājrūd) (Persian: جاجرود), also spelled as Jajrood, Djadjéroud or Djaderoud, is the largest river in Shemiranat County, Tehran province, Iran.
Its' sources are actually three different massifs of Southern Alborz mountain range and it flows mostly southwards until it is drained into the endorheic Namak Lake.
Jajrud drainage basin covers an area of 698 square kilometres.
[1] Number 5 on the lower side of map shows the Jajrud.
This article related to a river in Iran is a stub.