The Indori river (Hindi: इन्दोरी नदी), is a rain-fed river originates from Aravalli Range from Sikar district and flows through Alwar district of Rajasthan to Rewari district of Haryana and it is the longest tributary of Sahibi River which stretches to 50 km. In Delhi, it is called the Najafgarh drain or Najafgarh Nallah.