The North Eastern Railway system passes through the states of Uttar Pradesh, Bihar and Uttarakhand and runs from West to East. Most of the system is situated north of river Ganga and traverses through basin of river Ganga and touches Nepal border at number of places such as Nepal Ganj Road, Barhni, Nautanwa. A number of rivers originating in Nepal such as Sharda, Ghaghra, Rapti, Gandak and its various tributaries pass through areas served by this Railway.
