The swamps are full of huge reeds, bordered with tamarisk jungles, and in its lower reaches, where the water stretches out into great marshes, the river is clogged with a growth of agrostis.
The deeply indented shore of the Gulf of Papua forms the boundary of the subsided area between the two countries, and from it the land stretches out for 200 to 300 m.
It stretches out in one vast marshy plain, draining towards the south-east, and traversed by the Rapti, Kuana, Banganga, Masdih, Jamwar, Ami and Katneihia rivers.
The district stretches out in a level plain, with a gentle slope from N.W.
If the plate P is electrified it attracts the strip which stretches out towards it.