The park is within the Brahmaputra floodplain. This means when the water in the river rises, the park is partially covered in water. Flooding happens every year which results in over half the park being underwater. In 2017, 85% of the park was underwater. At least 107 animals died because of the flooding in 2017. There are elevated areas of the park which provide retreats and shelter for animals during floods. These are called "chapories". Many artificial "chapories" have been built with the help of the Indian Army to ensure the safety of the animals.