Explanation:

South Salmara Mankacahr district occupies an area of 568 square kilometres (219 sq mi). It occupies 980/km 2 (2,500/sq mi) of density and is an administrative district in the state of Assam in India. The district headquarters are located at Hatsingimari town which is situated at about 245 km from Guwahati, the state capital. Earlier it was a sub-division of Dhubri District. It shares its borders with Bangladesh in the west and Meghalaya in the south-east.The general topography of South Salmara Mankachar district is plain with patches of small hillocks like Bansali, Rangatari, etc. All these are situated in the southwestern part of the district. Mighty river Brahmaputra is flowing through this district from east to west with its tributaries. Other rivers are Jinjiram, Kalonadi (also known as Ganol) etc. The average annual rainfall of the district is 2,916 mm.