GANDAKI river flows southeast across the Gangetic plain of Bihar state, eventually merging with the Ganga near at Hajipur, or Patna.The entry point of the river at the Indo-Nepal border is also the confluence of Gandak, known as Triveni, with rivers Pachnad and Sonha also descending into India from Nepal.
Pandai river flows into Bihar (India) from Nepal in the eastern end of the Valmiki Sanctuary and meets Masan. its drainage area in India is 7620 sqkm. After the river enters India at Triveni, it travels for a further length of 300 km before it joins the Ganga, just downstream of Hajipur at Sonepur (also known as Harihar Kshetra), near Patna.Bfore joining the river Ganga nar patna, it flows through Champaran, Sarang and Muzaffarpur districts. The total length of the river is 630 km out of which 330 km lies in Nepal and Tibet.
THIS IS SAID TO BE LIVING GODDESS.