Ulhas River has its origin at the foothills of the
Sahyadris, near Karjat. It flows north towards
Ulhasnagar and onto
Kalyan, where it turns west to
Thane and a channel connects it to the
Thane Creek. The river then turns north-west towards
Ghodebunder, where it opens into an estuary known as Vasai Creek.
The Bharvi, Bhatsa and Kalu rivers are some of the important tributaries of the Ulhas.
