Kosi River is a famous spot for fishing and angling activities. During the fishing season that ranges from October till mid-December, and from mid-February to June end, enthusiasts can catch mahseer at the river. Permits for fishing can be arranged via resorts and jungle lodges located around Kosi River.A perennial river, its catchment lies partially in Corbett National Park. The river forms the eastern boundary of Corbett National Park, from Mohan through Dhikuli till Ramnagar. Wild animals from Corbett use it for drinking, especially during pinch periods, although the river does not enter the park.Bed of the river is strewn with boulders, due to which its flow is erratic and often changes course. Damaging torrents during monsoon have given the river the status of being notorious. Due to its inhabitation by mahseer, the river allures migratory birds.