Shivapuri Nagarjun National Park is the ninth national park in Nepal and was established in 2002. It is located in the country's mid-hills on the northern fringe of the Kathmandu Valley and named after Shivapuri Peak at altitude. It covers an area of in the districts of Kathmandu, Nuwakot and Sindhupalchowk, adjoining 23 Village Development Committees. In the west, the protected area extends to the Dhading District.
The area has always been an important water catchment area, supplying the Kathmandu Valley with several hundred thousand cubic liter of water daily. In 1976, the area was established as a protected watershed and wildlife reserve. In 2002, it was gazetted as Shivapuri National Park, initially covering . It was extended by the Nagarjun Forest Reserve covering in 2009.
The park includes some historical and religious sites, and a popular hiking route for local people and tourists.
The park is located in a transition zone between subtropical and temperate climates. The annual precipitation of about falls mostly from May to September, with 80% during the monsoon. Temperatures vary from during the winter season, rising to during the summer season.
The typical vegetation of the park is middle hill forest from of altitude, consisting of:
Himalayan subtropical broadleaf forests in the lower and upper subtropical bioclimatic zone dominated by Schima-Castanopsis associations, with chir pine stands on southern dry ridges and associations of alder, wild Himalayan cherry, Engelhardia and ring-cupped oak along streams;
Eastern Himalayan broadleaf forests in the lower temperate bioclimatic zone with predominantly broadleaf evergreen species of oak and laurel families mixed with rhododendron on northern slopes.
In higher elevations, a variety of medicinal herbs prosper. Botanists have recorded 129 species of mushrooms and 2,122 floral species, out of which 449 are vascular and 16 are endemic plants.
Since 2002 several surveys have been carried out to determine the faunal diversity of the protected area.