The Ghaggar-Hakra River is an intermittent river in India and Pakistan that flows only during the monsoon season. The river is known as Ghaggar in India, before the Ottu barrage, and as the Hakra in Pakistan, downstream of the barrage, ending in the Thar desert. The basin is classified in two parts, Khadir and Bangar, the higher area that is not flooded in rainy season is called "Bangar" and the lower flood-prone area is called "Khadar". The Hakra is connected to a paleochannel of the Sutlej and possibly the Yamuna, which ended in the Nara River, a delta channel of the Indus River joining the sea via Sir Creek.