The Ghaggar is a seasonal river in India, flowing when water is available from monsoon rains. It originates in the Shivalik mountain range in Himachal Pradesh and flows through Haryana and Punjab to Rajasthan, where it disappears into the Thar Desert. The present day Saraswati River flows into the Ghaggar in Haryana.
Until about 2000 BC - 1500 BC, the river was much larger, taking water from other nearby rivers that now flow into the Indus. The dried-out channel of the river continues into Pakistan where it is known as the Hakra River.