Jim Corbett National Park lies in the Nainital, Pauri Garwhal and Bijnore Districts of Uttaranchal. The present area of the Reserve is 1318.54 sq. km. including 520 sq. km. of core area and 797.72 sq. km. of buffer area. The core area forms the Jim Corbett National Park while the buffer contains reserve forests (496.54 sq.km.) as well as the Sonanadi Wildlife Sanctuary (301.18 sq.km.). The core is bounded to the North by the Kanda Ridge, with a height of 1043 m at its highest point. The entire area of the reserve is mountainous and falls in the Shivalik and Outer Himalaya geological region. It forms the catchments area of the Ramganga, a tributary of the Ganga. After India attained independence in 1947 the park was renamed as Ramganga National Park. In 1956, it was renamed as Jim Corbett National Park, in memory of Jim Corbett..