The park was declared a reserve forest on 17 October 1978. It was set up as a Nameri Sanctuary on 18 September 1985 with an area of137 km2 as a part of Naduar Forest Reserve.Until then the Nameri National Park was heaving used for logging. Another 75 km2 was added on 15 November 1998 when it was officially established as a National Park. The Jia Bhoroli river of Assam was famous since, the time of British for the Golden Mahseer Angling.
Nameri faces two threats one due to the continued official logging in the area of a sonipat. The major threat for nameri is the Human Animal Conflict which is due to around 3000 cattle grazing the forest. The other human animal conflict due to the vast group of elephants which are present in nameri.There have been several cases of elephant deaths like in 2001 there were 18 elephant deaths.
Angling At Nameri:This park being full of rivers.Fishing is the famous activity which is held by forest department.Golden Masheer Fish is the famous in these region which is grown 3-9 feets, it is also known as "Tiger of the Himalayan rivers"
Nameri River Rafting:The river rafting is held at southern east of the park on river-Jai Bharali.The rafting up to 13 km around 3 hours Angling has been suspended by local Park authority under the Wildlife Protection Act as this Habitat is now a Save the Tiger Project site
Nameri Wildlife Trekking:wild life trekking is amazing experience in these park.An armed forest department guide the trekking.