Jajrood River

Jajrood River (or Jājrūd or Jajroud) is a river of northern Iran, in Mazandaran Province and Tehran Province.

It flows south through the Central Alborz mountain range.

It is a tributary of the Karaj River, which empties into the endorheic Namak Lake basin.

The Jajrood River is #5 on the lower side of map.

...
Wikipedia