Kosi River in Jim Corbett National Park traverses through the eastern boundary and makes a picturesque location with a breathtaking view of the hills in the backdrop and pristine clear waters. Inhabited by mahseer fish, it attracts huge number of migratory birds. It is also popular for rafting which can be done after obtaining permission from the authorities.
Kosi originates from Darpani Dhar flows through the valleys before touching the eastern periphery of the Corbett National Park. It doesn't really enter the park boundary but is a major source of water for the wildlife.