Using satellite imagery, non-profit organization Indian National Trust for Art and Cultural Heritage (INTACH) has successfully traced the flow of the Sahibi river which is now classified as ephemeral.
The Sahibi originates in the hills of the Aravalli Range in Rajasthan’s Sikar district. It used to flow from Rajasthan and Haryana before joining Yamuna in Delhi.
The river is now bracketed into various canals and nullahs and flows only when it rains heavily in the catchment areas. In Delhi, it is now known as the Najafgarh drain.
Source: Down To Earth
About Sahibi river:
It is also called the Sabi River.
It is an ephemeral, rain-fed river flowing through Rajasthan, Haryana and Delhi in India.
Course:
It originates in the eastern slopes of the Saiwar Protected Forest hills in Sikar, enters Jaipur, and after initially flowing southeast and east, it turns northeastwards near Shahpura and continues further to enter Haryana.
It further drains into Yamuna in Delhi, where its channeled course is also called the Najafgarh drain, which also serves as Najafgarh drain bird sanctuary.
It flows for 300 km of which 157 km is in Rajasthan, 100 km in Haryana and 40 km in Delhi.
Its current and paleochannels have several important wetlands including the Masani barrage wetland, Matanhail forest, Chhuchhakwas-Godhari, Khaparwas Wildlife Sanctuary, Bhindawas Wildlife Sanctuary, Sultanpur National Park, Basai Wetland, Najafgarh lake etc.
Several Ochre Coloured Pottery culture sites (belonging to late Harappan phase of Indus Valley civilisation culture) have been found along the banks of Sahibi river and its tributaries such as Krishnavati river, Dohan river and Sota River.