(Best reached by flight to Biratnagar follwed by a two hour jeep ride)

Area: 175 sq km
Established: 1976.

Location:
Lies on the flood plains of the Sapta Koshi in Saptari and Sunsari Districts of eastern Nepal. The eastern and western embankments of the river define the reserve.

Features:
Rapid and complete flood inundation of the reserve to depths ranging from 10 to 300cm occurs during the monsoon with Sapta Koshi River changing its course from one season to another.

Vegetation is mainly tall khar-pater grassland with a few patches of khair-sissoo scrub forest and deciduous mixed reverine forest.

This reserve is unique for its 100 or so surviving wild water buffaloe, other animals include the hog deer, wild boar, spotted deer and the Gaur. Recorded species of birds total 280, including 20 species of duck, two of ibises, many storks, egrets, herons and the endangered swamp partridges and Bengal floricans.