Kaziranga is located between latitudes 26°30' N and 26°45' N, and longitudes 93°08' E to 93°36' E within three districts in the Indian state of
Assam—the
Kaliabor subdivision of
Nagaon district,
Bokajan subdivision of
Karbi Anglong and the
Bokakhat subdivision of
Golaghat district. Kaziranga covers an area of , with approximately lost to erosion in recent years. The landscape consists of exposed
sandbars, riverine flood-formed lakes known as,
beels, and elevated regions known as,
chapories, which provide retreats and shelter for animals during floods. Many artificial
chapories have been built with the help of the
Indian Army to ensure the safety of the animals. Kaziranga is one of the largest tracts of protected land in the sub-Himalayan belt, and due to the presence of highly diverse and visible species, has been described as a "
biodiversity hotspot".
Climate During this season,
beels and
nullahs (water channels) dry up. During the peak months of July and August, three-fourths of the western region of the park is submerged, due to the rising water level of the Brahmaputra. Each time a flood comes, 70%-80% percent of the national park is inundated for 5–10 days at a time. The flooding causes most animals to migrate to elevated and forested regions outside the southern border of the park, such as the
Mikir Hills. 540 animals, including 13 rhinos and mostly hog deer perished in unprecedented floods of 2012. However, occasional dry spells create problems as well, such as food shortages and occasional forest fires. Seasonal variations in the vegetation and habitat of the animal is notable in the park. During winter the shallow
beels and
nullahs (small water channel) dry up and the growth of short grasses cover up their beds. The grasses also grow around the perennial beels. With the end of the monsoon season, herbivorous animals, especially the
rhinoceros, rush into these areas for grazing. In the other parts of the park the tall coarse grasses dry up by the month of December and January and are then control burnt by the park staff. After such burning some animals begin to concentrate in the burnt patches and relish the ash and the partially burnt stems of the reeds. With few winter showers fresh grass blades shoot up in the burnt patches attracting larger number of animals to these areas. With the onset of the summer season the grasses in the burnt patches grow up quickly and the tender shoots turn into coarse blades, which no longer attract the animals. The temperature also goes up and the animals prefer to remain near the water sources especially around the numerous perennial beels and water streams inside the park. During the monsoon, the shallow beels and the nullahs start to get filled up, firstly by the monsoon showers and later by the floodwaters. The animals gradually start moving towards higher grounds, which are situated around the tree forests. When the flood water covers most of the areas the animals migrate to the nearby Karbi Anglong Hills and other adjoining areas. == Flora ==