There total area is 1,318.54 sq. km – of which 520 square kilometer is the core area and 797.72 sq. km is buffer zone. The core includes Park and buffer includes 496.54 sq. km of reserve forest and 301.18 sq. km Sonanadi Wildlife Sanctuary. This sanctuary lies within an elongated valley positioned between the Lesser Himalayas and the Shivalik ranges. Its geology includes upper tertiary rocks and sandstone ridges. Valleys like Doons or Duns are typical features here.

Corbett Park is not only home for Bengal tigers it is also a home for endangered elephant, Black bear, Sloth Beer, Walking Deer, Hog Deer etc. There are 600 species of aqua fauna and bird like White-Backed Vulture, orange-breasted green pigeon, Hodgson's bushchat, Pallas fish eagle, golden oriole, tawny fish owl, Pitta, Scarlet Minivet and reptile like endangered Ghariyal, mugger Crocodiles etc. Bengal Tigers are plentiful but not easily visible due to the dense jungle and foliage. Tigers are opportunistic nimrods and take larger creatures like buffaloes and occasionally indeed elephants. Leopards are mostly found in hilly regions. Small cats like jungle cat, fishing cat, leopard cat are also found. Other mammals include barking deer, sambar, hog deer, sloth bears, Himalayan black bears, mongoose, otters, martens, pangolins and monkeys like langurs and macaques. At night, the sound of owls and nightjars can be heard. Large herds of Indian elephants are found in summer. Indian python is a dangerous predator here. Crocodiles and gharials were rescued from captive breeding and released in the Ramganga River.

Spreading the area more than 520 square kilometres park has the diverse floral. Flora like Sal, Khair, Sisso, Bamboo, Ber, Kachnar, Amaltas make the forest dense and enhance the beauty of the park. More than 75% of the total area is covered by sal timber. Botanical check confirms that park has around 600 species of herbs and trees, bamboo, lawn, climbers, herbs and ferns. Sal and khair are mostly visible in the park while doing safari. Flowers in the park also enhance the beauty of the park flowers found like Amaltas (Yellow flowers), Kachnar (Pink flowers), Dhak (Ornage flowers) and Semal (Red Flowers). Some artificial herb also planted, this artificial herb can be found around the forest and more plants like Bottlebrush (Callistemon viminalis), Silver Oak (Gravillea robusta), Eucalyptus, Jacaranda (Jacaranda mimosaefolia), Teak (Tectona grandis).