Political Geography: The park area falls in the following districts: Chirang, Baksa in the autonomous territorial region, i.e.
BTR in the state of
Assam in India. The park is divided into three ranges. The western range is based at Panbari, the central at
Bansbari near
Barpeta Road, and the eastern at Bhuiyapara near
Pathsala. The ranges are not well connected; while two major rivers need to be forded in going from the centre to the Panbari, there is a rough trail (the
Daimari road) connecting the centre to the eastern range. Most visitors come to Bansbari and then spend some time inside the forest at Mathanguri on the
Manas river at the Bhutan border. Physical Geography: Manas is located in the foothills of the
Eastern Himalaya and is densely forested. The Manas river flows through the west of the park and is the main river within it. It is a major tributary of Brahmaputra river and splits into two separate rivers, the
Bwrsi and
Bholkaduba as it reaches the plains. Five other smaller rivers also flow through the national park which lies on a wide, low-lying alluvial terrace spreading out below the foothills of the outer Himalaya. The Manas river also serves as an international border dividing
India and
Bhutan. The bedrock of the savanna area in the north of the park is made up of limestone and sandstone, whereas the grasslands in the south of the park stand on deep deposits of fine alluvium. The combination of Sub-Himalayan Bhabar Terai formation along with the riverine succession continuing up to Sub-Himalayan mountain forest makes it one of the richest areas of biodiversity in the world. The park is in the area and is situated at an altitude of above mean sea level.
Climate: The minimum temperature is around and the maximum temperature is around . Heavy rainfall occurs between May and September. The annual average rainfall is around . ==Biomes==