Malir River (Urdu: دریائے ملیر) is a seasonal river located in Karachi, Sindh, Pakistan. It passes through the city of Karachi from the northeast, through the center, and drains into the Arabian Sea. It is one of the two rivers passing through Karachi, the other being the Lyari River. It has two main tributaries, the Thadho and the Sukhan. In the rainy season, this river experiences heavy water flow, with millions of gallons emptying into the Arabian Sea. The Malir Dam is a barrage regulating flow and flooding of the river, preserving a reservoir during seasonal droughts.