Rivers in Corbett

Ramganga is the most important river in Corbett Country as it forms the most predominant hydrological resource. A typical rain water river and originating from Gairsain, the Ramganaga runs for more than 100 kms before entering the reserve near Marchula. Inside Corbett National Park, it flows till Kalagarh and then hitting the plains gathering water from rivers like Sonanadi. Ramganga is home to the famous game fish of India, Mahaseer along with other aquatic species like the endangered Gharials, crocodiles and turtles. The river also attracts a lot of migratory birds from Europe and Asia.

The Kosi still remains the most famous river in Corbett due to its presence in Dhikuli where most of the resorts exist. Kosi does not flow through the park but is still used by animals for drinking water. Kosi is known for its erratic flow and the river is highly unpredictable during the monsoons. The river is home to Mahaseer.

Sonanadi is the most important tributary of River Ramganga is responsible for watering the Sonanadi Wildlife Sanctuary and enters Corbett National Park from the North. The simple hindi translation of Sonanadi means "river of gold" and it is believed that at one time grains of gold were extracted from its bed through different treatments.