Dibru-Saikhowa National Park, also a biosphere reserve, is in Tinsukia & Dibrugarh District , Assam, India. Located in the in the flood plains of the Brahmaputra and the Lohit, this semi evergreen forest land is bounded by the River Brahmaputra and Lohit in the north and Dibruriver in the South. The park also consists of moist mixed deciduous forests, canebrake and grasslands. The region is the largest salix swamp forest in North east India. Dibru-Saikhowa is a safe residing place for many endangered species. Due to the huge supply of fishes by the rivers the park is rich in fish diversity.
The area was declared as Dibru Reserved Forest in 1890. In 1929, Saikhowa Reserve Forest was announced. In 1986, an area of 650 sqkm was preliminarily declared as a Wildlife Sanctuary. In 1997, Dibru-Saikhowa Biosphere Reserve was declared with and area of 765 sq km that included the 340 sq km of Sanctuary area as the core. In 1999, the 340 sq km of Sanctuary area was declared as National Park.
Initially the park was created to support conservation of the rare habitat- White winged wood duck, the area is also home to other rare creatures such as water buffalo, wild horse, the tiger and Capped Langur.