Ghaghara
The Ghangara is the longest river in Nepal. In Sanskrit, the name means "marbles of the water". Other names of the river are  Ghāghrā, and Gogra. It has a length of , or  including source rivers. Of this length,  are in Nepal, where it is called Karnali. It is the biggest tributary to the Ganges by volume, and the second-longest, after Yamuna.