Originating in the foot hills of Nepal, the Rapti flows to the north of
Behraich District. After traversing about 130 km, it enters to the northern portion of the
Gonda before entering the
Sant Kabir Nagar District in the north-west. The Rapti then meets the
Ghaghra River.
The river has numerous tributaries, especially in the west bank. The River Ami is the main tributary.
